FFH scientific research papers database

@article{Milikić2023,

title = {Efficient bifunctional cerium-zeolite electrocatalysts for oxygen evolution and oxygen reduction reactions in alkaline media},

author = {J. Milikić and S. Stojanović and L. Damjanović-Vasilić and R. Vasilić and B. Šljukić},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143531789&doi=10.1016%2fj.synthmet.2022.117231&partnerID=40&md5=731f1fa695289decc48c40c0f2e473eb},

doi = {10.1016/j.synthmet.2022.117231},

year  = {2023},

date = {2023-01-01},

journal = {Synthetic Metals},

volume = {292},

abstract = {Four cerium-zeolites were examined as low-cost bifunctional electrocatalysts for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) in an alkaline solution. Cerium-exchanged zeolites, synthetic 13X and natural clinoptilolite were employed as prepared and calcined (cal). Four samples (Ce-13X cal, Ce-13X, Ce-Cli cal, and Ce-Cli) were characterized by X-ray powder diffraction analysis (XRPD), scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared (FTIR) spectroscopy, fluorescence spectroscopy and Brunner-Emmet-Teller (BET) method. All four zeolites exhibited activity for the two studied reactions. Ce-13X cal gave the lowest onset potential accompanied by the highest OER current density. Furthermore, Ce-13X cal showed the most positive ORR onset potential value of 0.84 V and the most positive ORR half-wave potential of 0.75 V (ca. 50 mV more positive than value for the other three cerium-zeolite electrodes) accompanied by the lowest Tafel slope of 80 mV dec−1. Koutecky-Levich analysis indicated that ORR follows 2-electron pathway. Overall, Ce-13X cal showed the best OER/ORR performances in alkaline solution. © 2022 Elsevier B.V.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{NedićVasiljević2023,

title = {Galvanic displacement of Co with Rh boosts hydrogen and oxygen evolution reactions in alkaline media},

author = {B. Nedić Vasiljević and A. Z. Jovanović and S. V. Mentus and N. V. Skorodumova and I. A. Pašti},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85145722284&doi=10.1007%2fs10008-023-05374-4&partnerID=40&md5=5b43aa2f376abde968b0ffeacfd27ffc},

doi = {10.1007/s10008-023-05374-4},

year  = {2023},

date = {2023-01-01},

journal = {Journal of Solid State Electrochemistry},

abstract = {The growing energy crisis put an emphasis on the development of novel efficient energy conversion and storage systems. Here we show that surface modification of cobalt by a fast galvanic displacement with rhodium significantly affects the activity towards hydrogen (HER) and oxygen evolution reactions (OER) in alkaline media. After only 20 s of galvanic displacement, the HER overpotential is reduced by 0.16 V and OER overpotential by 0.06 V. This means that the predicted water splitting voltage is reduced from 2.03 V (clean Co anode and cathode) to 1.81 V at 10 mA cm−2 (Rh-exchanged Co electrode). During the galvanic displacement process, the surface roughness of the Co electrode does not suffer significant changes, which suggests an increase in the intrinsic catalytic activity. Density Functional Theory calculations show that the reactivity of the Rh-modified Co(0001) surface is modified compared to that of the clean Co(0001). In the case of HER, experimentally observed activity improvements are directly correlated to the weakening of the hydrogen-surface bond, confirming the beneficial role of Rh incorporation into the Co surface. Graphical abstract: [Figure not available: see fulltext.] © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Eichhorn2023,

title = {Synthesis, Crystallographic Structure, Theoretical Analysis, Molecular Docking Studies, and Biological Activity Evaluation of Binuclear Ru(II)-1-Naphthylhydrazine Complex},

author = {T. Eichhorn and F. Kolbe and S. Mišić and D. Dimić and I. Morgan and M. Saoud and D. Milenković and Z. Marković and T. Rüffer and J. Dimitrić Marković and G. N. Kaluđerović},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85145976180&doi=10.3390%2fijms24010689&partnerID=40&md5=9fb47c6b79dc025f4241c9fbf203d65e},

doi = {10.3390/ijms24010689},

year  = {2023},

date = {2023-01-01},

journal = {International Journal of Molecular Sciences},

volume = {24},

number = {1},

abstract = {Ruthenium(II)–arene complexes have gained significant research interest due to their possible application in cancer therapy. In this contribution two new complexes are described, namely [RuCl(η6-p-cymene)2(μ-Cl)(μ-1-N,N′-naphthyl)]X (X = Cl, 1; PF6, 2), which were fully characterized by IR, NMR, and elemental microanalysis. Furthermore, the structure of 2 in the solid state was determined by a single crystal X-ray crystallographic study, confirming the composition of the crystals as 2·2MeOH. The Hirshfeld surface analysis was employed for the investigation of interactions that govern the crystal structure of 2·2MeOH. The structural data for 2 out of 2·2MeOH was used for the theoretical analysis of the cationic part [RuCl(η6-p-cymene)2(μ-Cl)(μ-1-N,N′-naphthyl)]+ (2a) which is common to both 1 and 2. The density functional theory, at B3LYP/6-31+G(d,p) basis set for H, C, N, and Cl atoms and LanL2DZ for Ru ions, was used for the optimization of the 2a structure. The natural bond orbital and quantum theory of atoms in molecules analyses were employed to quantify the intramolecular interactions. The reproduction of experimental IR and NMR spectra proved the applicability of the chosen level of theory. The binding of 1 to bovine serum albumin was examined by spectrofluorimetry and molecular docking, with complementary results obtained. Compound 1 acted as a radical scavenger towards DPPH• and HO• radicals, along with high activity towards cancer prostate and colon cell lines. © 2022 by the authors.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Wilson2023,

title = {Recovery of no-carrier-added 41Ca, 44Ti, and 26Al from high-energy proton-irradiated vanadium targets},

author = {J. M. Wilson and I. Mihalcea and M. Veicht and D. Cvjetinović and D. Schumann},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146644000&doi=10.1515%2fract-2022-0072&partnerID=40&md5=31dced13e9f88a49437b3d4553a7d6c6},

doi = {10.1515/ract-2022-0072},

year  = {2023},

date = {2023-01-01},

journal = {Radiochimica Acta},

abstract = {Many useful and needed radionuclides for medicinal, astrophysical, and environmental research are produced naturally in inefficient quantities or not-at-all. In the method described here, rare cosmogenic isotopes were produced via spallation reactions in metallic vanadium and separated without adding any carriers. In the SINQ facility at the Paul Scherrer Institut, the vanadium targets were irradiated for two years with high-energy protons (≤590 MeV). After a cooling period of eight years, only relatively long-lived radionuclides such as 32Si, 44Ti, 41Ca, and 26Al remain present. After target dissolution, 32Si was first separated for a prospective half-life redetermination. The remaining 32Si-free solution was used for extracting 44Ti, 41Ca, and 26Al, three key isotopes which are scientifically interesting for nuclear astrophysics research as well as medical applications. Each separation scheme employed ion-exchange and extraction chromatography; developed and optimized using inactive model solutions analyzed with Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES). The irradiated samples were tracked with γ-ray spectroscopy for γ-ray emitting impurities. As a result, radiochemically pure sample solutions of 44Ti, 41Ca, and 26Al were obtained as "ready for use"in different application fields. © 2022 Walter de Gruyter GmbH, Berlin/Boston 2022.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Rupar2023,

title = {ORR Catalysts Derived from Biopolymers},

author = {J. Rupar and D. Tekić and A. Janošević Ležaić and K. K. Upadhyay},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146669521&doi=10.3390%2fcatal13010080&partnerID=40&md5=8b39e725abccbd26788d85a7d4259d32},

doi = {10.3390/catal13010080},

year  = {2023},

date = {2023-01-01},

journal = {Catalysts},

volume = {13},

number = {1},

abstract = {Due to the limited reaction rate of the oxygen reduction reaction (ORR), it is considered as a limiting factor in the performance of fuel cells and metal-air batteries. Platinum is considered the benchmark catalyst for ORR; however, the scarcity of platinum, its high price, the drift phenomenon, its insufficient durability, and its susceptibility to gas poisoning are the reasons for the constant search for new ORR catalysts. Carbon-based catalysts show exceptional promise in this respect considering economic profitability and activity, and, in addition, they have favorable conductivity and often a large specific surface area. The use of chitin, cellulose, lignin, coconut shell particles, shrimp shells, and even hair for this purpose was reported, as they had similar electrochemical activity regarding Pt. Alginate, a natural polymer and a constituent of brown algae, can be successfully used to obtain carbon materials that catalyze ORR. In addition, metal atomic-level catalysts and metal N-doped porous carbon materials, obtained from sodium alginate as a precursor, have been proposed as efficient electrocatalysts for ORR. Except for alginate, other biopolymers have been reported to play an important role in the preparation of ORR catalysts. In this review, recent advances regarding biopolymer-derived ORR catalysts are summarized, with a focus on alginate as a source. © 2022 by the authors.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Vesković2023,

title = {Spectroscopic Characterization of the Binding and Release of Hydrophilic, Hydrophobic and Amphiphilic Molecules from Ovalbumin Supramolecular Hydrogels},

author = {A. Vesković and D. Bajuk-Bogdanović and V. B. Arion and A. Popović Bijelić},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146775442&doi=10.3390%2fgels9010014&partnerID=40&md5=30ae75ceaeb032d9e78e1827ca1c576f},

doi = {10.3390/gels9010014},

year  = {2023},

date = {2023-01-01},

journal = {Gels},

volume = {9},

number = {1},

abstract = {Protein-based hydrogels have attracted growing attention for pharmaceutical and biomedical applications. Ovalbumin (OVA), the hen egg white albumin, possessing good foaming and gelling properties and being widely used in the food industry, has recently been indicated as a potential pharmaceutical vehicle. In this study, the binding and release properties of pure OVA hydrogels were investigated by electron paramagnetic resonance (EPR) spin labeling. The comparative analysis between OVA and serum albumin (SA) hydrogels revealed the same release kinetics of hydrophilic 3-carbamoyl-proxyl and 3-carboxy-proxyl, suggesting the diffusion-dominated release of small probes from both hydrogel types. The results obtained with the amphiphilic 16-doxylstearate (16-DS) indicate that OVA, unlike SAs, does not possess a specific fatty acid binding site. However, the OVA hydrogels were able to accommodate a two-fold excess of 16-DS, resulting from protein thermally induced conformational changes, as confirmed by Raman spectroscopy. Similarly, the hydrophobic modified paullone ligand HL, which was initially free in the OVA solution, was bound in the hydrogel. The hydrogels were found to retain a significant amount of 16-DS and HL after 7-day dialysis in physiological saline. The observed facilitated binding of amphiphilic/hydrophobic molecules in OVA hydrogels compared to the solution, and their sustained release, demonstrate the applicability of OVA hydrogels in pharmaceutics. © 2022 by the authors.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Mihailović2023,

title = {Green Synthesis of Silver Nanoparticles Using Salvia verticillata and Filipendula ulmaria Extracts: Optimization of Synthesis, Biological Activities, and Catalytic Properties},

author = {V. Mihailović and N. Srećković and Z. P. Nedić and S. Dimitrijević and M. Matić and A. Obradović and D. Selaković and G. Rosić and J. S. Katanić Stanković},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146791627&doi=10.3390%2fmolecules28020808&partnerID=40&md5=3af3f9ec72f58d5759cd79c2dc0f096b},

doi = {10.3390/molecules28020808},

year  = {2023},

date = {2023-01-01},

journal = {Molecules},

volume = {28},

number = {2},

abstract = {The study’s objective was to obtain silver nanoparticles (SVAgNP and FUAgNP) using aqueous extracts of Salvia verticillata and Filipendula ulmaria. The optimal conditions for nanoparticle synthesis were determined and obtained; nanoparticles were then characterized using UV-Vis, Fourier-transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), Dynamic Light Scattering (DLS), Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM/EDS). SVAgNP and FUAgNP possessed a crystalline structure with 48.42% and 60.41% silver weight, respectively. The highest percentage of nanoparticles in the solution had a diameter between 40 and 70 nm. In DPPH˙ and ABTS˙+ methods, FUAgNP (IC50 15.82 and 59.85 µg/mL, respectively) demonstrated a higher antioxidant capacity than SVAgNP (IC50 73.47 and 79.49 µg/mL, respectively). Obtained nanoparticles also showed pronounced antibacterial activity (MIC ˂ 39.1 µg/mL for most of the tested bacteria), as well as high biocompatibility with the human fibroblast cell line MRC-5 and significant cytotoxicity on some cancer cell lines, especially on the human colon cancer HCT-116 cells (IC50 31.50 and 66.51 µg/mL for SVAgNP and FUAgNP, respectively). The nanoparticles demonstrated high catalytic effectiveness in degrading Congo red dye with NaBH4. The results showed a rapid and low-cost methodology for the synthesis of AgNPs using S. verticillata and F. ulmaria with promising biological potential. © 2023 by the authors.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Gutić2023,

title = {Redrawing HER Volcano with Interfacial Processes—The Role of Hydrogen Spillover in Boosting H2 Evolution in Alkaline Media},

author = {S. J. Gutić and D. Metarapi and A. Z. Jovanović and G. K. Gebremariam and A. S. Dobrota and B. Nedić Vasiljević and I. A. Pašti},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146799013&doi=10.3390%2fcatal13010089&partnerID=40&md5=dd62c6150813b92357326554afc928d9},

doi = {10.3390/catal13010089},

year  = {2023},

date = {2023-01-01},

journal = {Catalysts},

volume = {13},

number = {1},

abstract = {The requirements for the efficient replacement of fossil fuel, combined with the growing energy crisis, places focus on hydrogen production. Efficient and cost-effective electrocatalysts are needed for H2 production, and novel strategies for their discovery must be developed. Here, we utilized Kinetic Monte Carlo (KMC) simulations to demonstrate that hydrogen evolution reaction (HER) can be boosted via hydrogen spillover to the support when the catalyst surface is largely covered by adsorbed hydrogen under operating conditions. Based on the insights from KMC, we synthesized a series of reduced graphene-oxide-supported catalysts and compared their activities towards HER in alkaline media with that of corresponding pure metals. For Ag, Au, and Zn, the support effect is negative, but for Pt, Pd, Fe, Co, and Ni, the presence of the support enhances HER activity. The HER volcano, constructed using calculated hydrogen binding energies and measured HER activities, shows a positive shift of the strong binding branch. This work demonstrates the possibilities of metal–support interface engineering for producing effective HER catalysts and provides general guidelines for choosing novel catalyst–support combinations for electrocatalytic hydrogen production. © 2023 by the authors.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Al-Hamry2023,

title = {Layer-by-Layer Deposited Multi-Modal PDAC/rGO Composite-Based Sensors},

author = {A. Al-Hamry and T. Lu and J. Bai and A. Adiraju and T. K. Ega and I. A. Pašti and O. Kanoun},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146822949&doi=10.3390%2ffoods12020268&partnerID=40&md5=7d7d7b0d769b7fd6de9dad6cf0101671},

doi = {10.3390/foods12020268},

year  = {2023},

date = {2023-01-01},

journal = {Foods},

volume = {12},

number = {2},

abstract = {Different environmental parameters, such as temperature and humidity, aggravate food spoilage, and different volatile organic compounds (VOCs) are released based on the extent of spoilage. In addition, a lack of efficient monitoring of the dosage of pesticides leads to crop failure. This could lead to the loss of food resources and food production with harmful contaminants and a short lifetime. For this reason, precise monitoring of different environmental parameters and contaminations during food processing and storage is a key factor for maintaining its safety and nutritional value. Thus, developing reliable, efficient, cost-effective sensor devices for these purposes is of utmost importance. This paper shows that Poly-(diallyl-dimethyl ammonium chloride)/reduced Graphene oxide (PDAC/rGO) films produced by a simple Layer-by-Layer deposition can be effectively used to monitor temperature, relative humidity, and the presence of volatile organic compounds as indicators for spoilage odors. At the same time, they show potential for electrochemical detection of organophosphate pesticide dimethoate. By monitoring the resistance/impedance changes during temperature and relative humidity variations or upon the exposure of PDAC/rGO films to methanol, good linear responses were obtained in the temperature range of 10–100 °C, 15–95% relative humidity, and 35 ppm–55 ppm of methanol. Moreover, linearity in the electrochemical detection of dimethoate is shown for the concentrations in the order of 102 µmol dm−3. The analytical response to different external stimuli and analytes depends on the number of layers deposited, affecting sensors’ sensitivity, response and recovery time, and long-term stability. The presented results could serve as a starting point for developing advanced multi-modal sensors and sensor arrays with high potential for analytical applications in food safety and quality monitoring. © 2023 by the authors.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Ahmetović2023,

title = {Examination of the doping effects of samarium (Sm3+) and zirconium (Zr4+) on the photocatalytic activity of TiO2 nanofibers},

author = {S. Ahmetović and Z. Ž. Vasiljević and V. Rajić and D. Bartolić and M. Novaković and N. B. Tadić and N. Cvjetićanin and M. V. Nikolić},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85139325540&doi=10.1016%2fj.jallcom.2022.167423&partnerID=40&md5=049839b657b2ce5b2888e0d72432d3f0},

doi = {10.1016/j.jallcom.2022.167423},

year  = {2023},

date = {2023-01-01},

journal = {Journal of Alloys and Compounds},

volume = {930},

abstract = {Pure and samarium (Sm3+) - or zirconium (Zr4+)-doped TiO2 nanofibers were synthesized by electrospinning method followed by calcination at 500 °C for 1 h. As-spun fibers were smooth, straight and continuous, whilst EDS analysis confirmed the fiber composition and incorporation of dopants in the fibers. Doping with Sm3+ and Zr4+ greatly inhibited the phase transformation of anatase to rutile, by surrounding of Sm3+ ions through formation of Ti-O-Sm bonds and by replacement of Ti4+ ions with larger Zr4+ ions. This was confirmed by HRTEM and SAED analysis. The size of nanofibers was determined to be 133 nm, 175 nm and 155 nm for pure, (0.5%)Sm3+:TiO2 and (1%)Zr4+:TiO2, respectively. After calcination, TiO2 crystal lattice with interplanar spacing of 0.353 nm of (101) crystal plane was not significantly disturbed by Sm doping whilst crystal lattice spacing of 0.357 nm of (101) planes of anatase phase in case TiO2:1.0%Zr4+, significantly differs from the value of pure TiO2 (0.352 nm), thus implying that Zr was doped into substitutional sites of the TiO2 lattice. The indirect band gaps were calculated to be in the range 3.07–3.24 eV. TiO2:0.5%Sm3+ and TiO2:1.0%Zr4+ exhibited higher specific surface area, of 47.1 and 59.4 m2/g, respectively, than pure TiO2 fibers (19.7 m2/g). Effects of Sm3+ and Zr4+ dopant content on the photodegradation efficiency of methylene blue (MB) were studied. TiO2:0.5%Sm3+ and TiO2:1.0%Zr4+ nanofibers have shown the highest photocatalytic activity of 97% and 98% with constant rates 0.01768 min−1 and 0.01939 min−1, respectively, within180 min irradiation under visible light. © 2022 Elsevier B.V.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Jelić20231669,

title = {Thermal stability and antimicrobial properties of pure and modified pyrophyllite (PYRO/Ag) clay},

author = {D. Jelić and J. Todorović and M. Saletović and A. Šmitran and S. Mentus},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127598311&doi=10.1007%2fs10973-022-11303-w&partnerID=40&md5=dfdf5a209836bb45f02f10b5c0ca04df},

doi = {10.1007/s10973-022-11303-w},

year  = {2023},

date = {2023-01-01},

journal = {Journal of Thermal Analysis and Calorimetry},

volume = {148},

number = {4},

pages = {1669-1678},

abstract = {Clays, inorganic materials with layered crystal structure, are widely used as a pharmaceutical excipients and active substances. The pyrophyllite, Al2Si4O10(OH)2, is an aluminosilicate mineral, that together with talc belongs to a specific sub-clay group. In this study, we examined some aspects of the use of pyrrophylite as a talc substitute. In this study, two pyrophyllite modifications have been investigated: the original pure pyrophyllite (labeled as PYRO), and that modified by incorporation of nanodispersed silver (labeled as PYRO/Ag). For pyrophyllite application in medicine, its thermal stability is of great importance. As an accelerated study of thermal stability, we employed simultaneous thermogravimetry and differential thermal analysis (TG/DTA) methods in dynamic (non-isothermal) regime in inert (N2) atmosphere. Pyrophyllite clay decomposition has been proved to proceed in two steps: moisture removal (I stage) and dehydroxilation (II stage). It must be stressed that these two degradation stages are not strictly separated. The kinetic parameters of decomposition reactions were examined by both isoconversional and model-fitting analytical procedures. The isoconversional Friedman model amounted activation energy (Ea) value on 65 kJ mol−1 and 214 kJ mol−1 for vaporization and dehydroxilation process, respectively. Fitting procedure revealed that vaporization process is of the n-th order (with activation energy, frequency factor and reaction order Ea = 66.6 kJ mol−1},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Milanović2023,

title = {Influence of acid-base equilibria on the rate of the chemical reaction in the advanced oxidation processes: Coumarin derivatives and hydroxyl radical},

author = {Milanović and D. Dimić and M. Antonijević and M. Žižić and D. Milenković and E. Avdović and Z. Marković},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85144074627&doi=10.1016%2fj.cej.2022.139648&partnerID=40&md5=703d8f4509bcdf8b06c166ddccd3e385},

doi = {10.1016/j.cej.2022.139648},

year  = {2023},

date = {2023-01-01},

journal = {Chemical Engineering Journal},

volume = {453},

abstract = {The decomposition and chemical manipulation of stable aromatic pollutants into less toxic products is an important topic for wastewater management and natural water remediation. The mechanism of the Advanced Oxidation Process (AOPs) of 4,7-dihydroxycoumarin (4,7-DHC) and 7-hydroxycoumarin (7-HC), as examples of stable naturally-occurring industrially-important compounds, in the presence of hydroxyl radical (HO[rad]) in the aqueous solution has been analyzed using Electron Paramagnetic Resonance spectroscopy (EPR) and Quantum Mechanics-based test for Overall Free Radical Scavenging Activity (QM-ORSA). The effect of pH values of the medium on the investigated reaction mechanisms has been fully investigated. The rate constants were estimated by the conventional transition state theory (TST) and Eckart's method (ZCT_0). Estimated values of the overall rate constant (koverall) higher than >4.06 × 109 M−1 s−1 at all pH values showed that both compounds undergo a chemical transformation when exposed to HO[rad]. When pH increased in the range of 0–14, the koverall increased from 4.06 × 109 to 1.11 × 1010 (4.7-DHC) and 2.09 × 109 to 1.76 × 1010 M−1s−1 (7-HC). At physiological pH = 7.4 value, 7-HC was ∼1.5 times more prone to radical action, as shown by EPR and QM-ORSA, due to the dominant anionic form. Both compounds were more reactive towards HO[rad] than Trolox at this pH value. The ecotoxicity assessment of the starting compounds, intermediates and oxidation products indicated that the formed products show lower acute and chronic toxicity effects on aquatic organisms than starting compounds, which is a prerequisite for the development of novel AOPs procedures. © 2022 Elsevier B.V.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Denisov2023,

title = {Light-Induced Agglomeration of Single-Atom Platinum in Photocatalysis},

author = {N. Denisov and S. Qin and J. Will and B. N. Vasiljevic and N. V. Skorodumova and I. A. Pašti and B. B. Sarma and B. Osuagwu and T. Yokosawa and J. Voss and J. Wirth and E. Spiecker and P. Schmuki},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85144272217&doi=10.1002%2fadma.202206569&partnerID=40&md5=99a7a5032b07c427bfff49022b15d3cc},

doi = {10.1002/adma.202206569},

year  = {2023},

date = {2023-01-01},

journal = {Advanced Materials},

volume = {35},

number = {5},

abstract = {With recent advances in the field of single-atoms (SAs) used in photocatalysis, an unprecedented performance of atomically dispersed co-catalysts has been achieved. However, the stability and agglomeration of SA co-catalysts on the semiconductor surface may represent a critical issue in potential applications. Here, the photoinduced destabilization of Pt SAs on the benchmark photocatalyst, TiO2, is described. In aqueous solutions within illumination timescales ranging from few minutes to several hours, light-induced agglomeration of Pt SAs to ensembles (dimers, multimers) and finally nanoparticles takes place. The kinetics critically depends on the presence of sacrificial hole scavengers and the used light intensity. Density-functional theory calculations attribute the light induced destabilization of the SA Pt species to binding of surface-coordinated Pt with solution-hydrogen (adsorbed H atoms), which consequently weakens the Pt SA bonding to the TiO2 surface. Despite the gradual aggregation of Pt SAs into surface clusters and their overall reduction to metallic state, which involves >90% of Pt SAs, the overall photocatalytic H2 evolution remains virtually unaffected. © 2022 The Authors. Advanced Materials published by Wiley-VCH GmbH.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Jeeva2023,

title = {Structural, spectroscopic, quantum chemical, and molecular docking study towards cartilage protein of (3E,3′E)-3,3′-(1,4-phenylenebis(azanediyl))bis(cyclohex-2-en-1-one)},

author = {P. Jeeva and S. Sudha and A. Rakić and D. Dimić and D. Ramarajan and D. Barathi},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85140955373&doi=10.1016%2fj.molstruc.2022.134429&partnerID=40&md5=98dd2c0562b9423d8351612512ba6b48},

doi = {10.1016/j.molstruc.2022.134429},

year  = {2023},

date = {2023-01-01},

journal = {Journal of Molecular Structure},

volume = {1274},

abstract = {This article presents the results of the structural and spectroscopic analysis of (3E,3′E)-3,3′-(1,4-phenylenebis(azanediyl))bis(cyclohex-2-en-1-one) by the means of IR, Raman, NMR, and Density functional theory methods. The structure of the compound was optimized at the B3LYP/6-311++G(d,p) level of theory. The NMR spectra were predicted using the Gauge Independent Atomic Orbital approach. The mean absolute differences between experimental and theoretical chemical shifts were 0.44 and 2.3 ppm for 1H and 13C NMR spectra thus proving the applicability of the chosen level of theory. The vibrational (IR and Raman) spectra were assigned based on the optimized structure following the Potential Energy Distribution (PED) analysis. The intermolecular interactions governing the stability of the compound were investigated by the Natural Bond Orbital and Quantum Theory of Atoms in Molecules analyses. The active positions in the compound were assessed by the Fukui functions calculation and Molecular electrostatic potential map. The inhibitory activity of the compound was analyzed by molecular docking toward cartilage proteins. This activity, along with the groups included in interactions, proved the activity of various parts of the molecule. The inhibitory activity was higher than that of a native ligand. The ecotoxicity assessment proved low toxicity towards aquatic organisms. These results show the high potential of enaminone derivatives obtained under mild conditions. © 2022},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Marinković202266,

title = {Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites},

author = {F. Marinković and D. Popović and J. Jovanović and B. Stanković and S. Jevtić and B. Adnadjević},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85113336189&doi=10.1002%2fpi.6284&partnerID=40&md5=11070ba90d1109d605bef108f81757c6},

doi = {10.1002/pi.6284},

year  = {2022},

date = {2022-01-01},

journal = {Polymer International},

volume = {71},

number = {1},

pages = {66-73},

abstract = {The effect of the weight fraction of NaA zeolite on thermal properties (specific heat capacity, thermal diffusivity, thermal conductivity) and dielectric properties (electrical conductivity, real and imaginary electric permittivity) of composites based on low-density polyethylene (LDPE) and NaA zeolite is examined. Composite samples containing from 5 to 30 wt% zeolite are prepared using the compression molding technique. The degree of dispersion and the weight fraction of filler in the LDPE/NaA zeolite composites are determined using X-ray diffraction. A linear decrease in the values of the specific heat capacity with an increase in the weight fraction of zeolite is observed using differential scanning calorimetry. The laser flash method is used to determine the thermal diffusivity of the composites. An increase in effective thermal diffusivity and abrupt increase in the range from 15 to 20 wt% of zeolite are established. It is demonstrated that effective thermal conductivity increases with an increase in the weight fraction of zeolite, and an abrupt increase in the range from 15 to 20 wt% is observed. Dielectric spectroscopy measurements are performed to determine the real and imaginary parts of permittivity. An increase of real and imaginary parts of permittivity of LDPE/NaA zeolite composites, with increasing weight fraction of zeolite, is established. Two relaxation peaks of the imaginary parts of permittivity of LDPE/NaA zeolite composites are detected. An increase of electrical conductivity with increasing weight fraction of zeolite and abrupt increase in the range 15 to 20 wt% are noticed. © 2021 Society of Industrial Chemistry. © 2021 Society of Industrial Chemistry.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Bosnar2022,

title = {Overcoming phase separation in dual templating: A homogeneous hierarchical ZSM-5 zeolite with flower-like morphology, synthesis and in-depth acidity study},

author = {S. Bosnar and V. Rac and D. Stošić and A. Travert and G. Postole and A. Auroux and S. Škapin and L. Damjanović-Vasilić and J. Bronić and X. Du and S. Marković and V. Pavlović and V. Rakić},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118483367&doi=10.1016%2fj.micromeso.2021.111534&partnerID=40&md5=7077404fa49ca1e0b4b19cff7d6b8341},

doi = {10.1016/j.micromeso.2021.111534},

year  = {2022},

date = {2022-01-01},

journal = {Microporous and Mesoporous Materials},

volume = {329},

abstract = {Dual templating approach, using hexadecyltrimethylammonium bromide (CTAB), was employed in an attempt to synthesize hierarchical ZSM-5 zeolite. Amount of mesoporogen and the duration of aging of the precursor were varied. Majority of the synthesis routes resulted in phase separation, yielding separate ZSM-5 and amorphous mesoporous material. The relative amounts of the two phases were dependent on the CTAB amount ratio and also significantly on the duration of precursor aging before CTAB addition. One particular combination of the two factors led to the formation of a homogeneous hierarchical form of ZSM-5 with leafy morphology, consisting of intergrown thin crystalline sheets which formed flower-like structures. The hierarchical ZSM-5 possessed significant microporous (≈95 m2/g) and highly developed mesoporous surface (≈470 m2/g), with a relatively broad distribution of mesopore sizes (<20 nm). The acidity of all samples was studied in detail. Isothermal microcalorimetry/volumetry of ammonia adsorption provided quantitative data on the number and distribution of strength of acidic sites. In situ FTIR of pyridine and collidine adsorption was used to quantify Brønsted and Lewis acid sites, and to provide information on their location - in the micropores or mesopores/external surface. The hierarchical ZSM-5 possessed both Lewis and Brønsted acidity, with Brønsted sites located mainly in the micropores. All samples were fully characterized using XRD, low temperature nitrogen adsorption, FESEM and EDS. The synthetic route used for obtaining the ZSM-5 zeolite with flower-like morphology is a simple strategy for preparing hierarchical ZSM-5 forms targeting enhanced diffusivity and accessibility of catalytically active sites. © 2021 Elsevier Inc.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Kiris2022,

title = {Laser-induced breakdown spectroscopy analysis of water solutions deposited on PTFE surface: Influence of copper oxide nanoparticles and NELIBS effect},

author = {V. Kiris and J. Savovic and A. Nevar and M. Kuzmanovic and M. Nedelko and D. Rankovic and N. Tarasenko},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119849736&doi=10.1016%2fj.sab.2021.106333&partnerID=40&md5=3ed81efe1c6f8d423ec61a03d5a3ea36},

doi = {10.1016/j.sab.2021.106333},

year  = {2022},

date = {2022-01-01},

journal = {Spectrochimica Acta - Part B Atomic Spectroscopy},

volume = {187},

abstract = {The analytical potential of LIBS for the analysis of liquid solutions was evaluated using two experimental setups, one based on a TEA CO2 laser and the other in which Nd:YAG laser was used. Polytetrafluoroethylene (PTFE) was used as a substrate on which a 10 μL drop of analyte solutions with different concentrations of analyte elements, Be, Cr, Ni, Co, Pb, Tl, and V, were deposited and dried. The samples were deposited either directly on the PTFE or over the pre-deposited layer of copper oxide nanoparticles to study the influence of nanoparticles (NPs) on the ablation and plasma excitation. The obtained results imply that the presence of Cu oxide NPs does not significantly affect the analytical performance of LIBS based on TEA CO2 laser for analysis of solutions. At the same time, it was shown that plasma created by TEA CO2 laser radiation efficiently excited ablated material, making metal elements detectable in the sub-ppm concentration range. On the other hand, Cu oxide NPs significantly influence the formation and the analytical properties of plasma induced by Nd:YAG laser. Without the presence of NPs, the intensities of analyte lines were very low, unsuitable for spectrochemical analysis. At the optimal surface concentration of NPs, 0.36 mg/cm2, the intensity of analyte lines was increased more than ten times. Limits of detection of Be and Cr were 5.3 ppb and 33 ppb, with good linearity of curves of growth. © 2021 Elsevier B.V.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Mišović2022,

title = {Properties of free-standing graphene oxide/silver nanowires films and effects of chemical reduction and gamma irradiation},

author = {A. Mišović and D. B. Bogdanović and D. Kepić and V. Pavlović and M. Huskić and N. Hasheminejad and C. Vuye and N. Zorić and S. Jovanović},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85120943690&doi=10.1016%2fj.synthmet.2021.116980&partnerID=40&md5=2445931ce08444a4ed98bcff5ffcbfe0},

doi = {10.1016/j.synthmet.2021.116980},

year  = {2022},

date = {2022-01-01},

journal = {Synthetic Metals},

volume = {283},

abstract = {The need for stable, chemical resistant and conductive materials is on the rise in recent times. Graphene shows promising electrical conductivity and chemical stability, but the production of a continual, conductive layer is limited and expensive. Silver nanowires (AgNWs) are both conducive and economically viable, but they are sensitive to water and oxygen. In this study, graphene oxide (GO) and AgNWs were synthesized and combined in different mass ratios (3:1, 2.5:1.5, and 1:1) to obtain chemically stable composites with improved electrical properties. Composites were reduced using ascorbic acid. With the increase of AgNWs to GO mass ratio, the surface of the free-standing composite film improved: the root mean square roughness was lowered from 376 nm for GO to 168 nm for the composite with the mass ratio of GO:AgNWs 1:1, while the sheet resistance was lowered from 146 × 106 Ω/□ to 4 Ω/□. For the first time, the effects of gamma irradiation on the structure of the composites were studied. Doses of 15, 25, and 35 kGy were applied. © 2021 Elsevier B.V.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Rakočević2022,

title = {Ptau nanoparticles supported by reduced graphene oxide as a highly active catalyst for hydrogen evolution},

author = {L. Rakočević and I. S. Simatović and A. Maksić and V. Rajić and S. Štrbac and I. Srejić},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122024529&doi=10.3390%2fcatal12010043&partnerID=40&md5=f9001f6ed4fbad293463a76d7dee375c},

doi = {10.3390/catal12010043},

year  = {2022},

date = {2022-01-01},

journal = {Catalysts},

volume = {12},

number = {1},

abstract = {PtAu nanoparticles spontaneously deposited on graphene support, PtAu/rGO, have shown remarkably high catalytic activity for hydrogen evolution reaction (HER) in sulfuric acid solution. SEM images of the PtAu/rGO electrode surface showed that Pt nanoparticles that are non-uniform in size occupy both the edges of previously deposited uniform Au nanoparticles and the edges of graphene support. XPS analysis showed that the atomic percentages of Au and Pt in PtAu/rGO were 0.6% and 0.3%, respectively. The atomic percentage of Au alone on previously prepared Au/rGO was 0.7%. Outstanding HER activity was achieved for the PtAu/rGO electrode, showing the initial potential close to the equilibrium potential for HER and a low Tafel slope of −38 mV/dec. This was confirmed by electrochemical impedance spectroscopy. The chronoamperometric measurement performed for 40 min for hydrogen evolution at a constant potential indicated good stability and durability of the PtAu/rGO electrode. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Dimic2022,

title = {Synthesis, Crystallographic, Quantum Chemical, Antitumor, and Molecular Docking/Dynamic Studies of 4-Hydroxycoumarin-Neurotransmitter Derivatives},

author = {D. S. Dimic and G. N. Kaluderovic and E. H. Avdovic and D. A. Milenkovic and M. N. Živanovic and I. Potocnák and E. Samolová and M. S. Dimitrijevic and L. Saso and Z. S. Markovic and J. M. Dimitric Markovic},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123425882&doi=10.3390%2fijms23021001&partnerID=40&md5=e0c2b9d4d4cdb7b3440d6d526483f476},

doi = {10.3390/ijms23021001},

year  = {2022},

date = {2022-01-01},

journal = {International Journal of Molecular Sciences},

volume = {23},

number = {2},

abstract = {In this contribution, four new compounds synthesized from 4-hydroxycoumarin and tyramine/octopamine/norepinephrine/3-methoxytyramine are characterized spectroscopically (IR and NMR), chromatographically (UHPLC-DAD), and structurally at the B3LYP/6-311++G*(d,p) level of theory. The crystal structure of the 4-hydroxycoumarin-octopamine derivative was solved and used as a starting geometry for structural optimization. Along with the previously obtained 4-hydroxycoumarin-dopamine derivative, the intramolecular interactions governing the stability of these compounds were quantified by NBO and QTAIM analyses. Condensed Fukui functions and the HOMO-LUMO gap were calculated and correlated with the number and position of OH groups in the structures. In vitro cytotoxicity experiments were performed to elucidate the possible antitumor activity of the tested substances. For this purpose, four cell lines were selected, namely human colon cancer (HCT-116), human adenocarcinoma (HeLa), human breast cancer (MDA-MB-231), and healthy human lung fibroblast (MRC-5) lines. A significant selectivity towards colorectal carcinoma cells was observed. Molecular docking and molecular dynamics studies with carbonic anhydrase, a prognostic factor in several cancers, complemented the experimental results. The calculated MD binding energies coincided well with the experimental activity, and indicated 4-hydroxycoumarin-dopamine and 4-hydroxycoumarin-3-methoxytyramine as the most active compounds. The ecotoxicology assessment proved that the obtained compounds have a low impact on the daphnia, fish, and green algae population. © 2022 by the authors.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Milikić2023,

title = {Efficient bifunctional cerium-zeolite electrocatalysts for oxygen evolution and oxygen reduction reactions in alkaline media},

author = {J. Milikić and S. Stojanović and L. Damjanović-Vasilić and R. Vasilić and B. Šljukić},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143531789&doi=10.1016%2fj.synthmet.2022.117231&partnerID=40&md5=731f1fa695289decc48c40c0f2e473eb},

doi = {10.1016/j.synthmet.2022.117231},

year  = {2023},

date = {2023-01-01},

journal = {Synthetic Metals},

volume = {292},

abstract = {Four cerium-zeolites were examined as low-cost bifunctional electrocatalysts for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) in an alkaline solution. Cerium-exchanged zeolites, synthetic 13X and natural clinoptilolite were employed as prepared and calcined (cal). Four samples (Ce-13X cal, Ce-13X, Ce-Cli cal, and Ce-Cli) were characterized by X-ray powder diffraction analysis (XRPD), scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared (FTIR) spectroscopy, fluorescence spectroscopy and Brunner-Emmet-Teller (BET) method. All four zeolites exhibited activity for the two studied reactions. Ce-13X cal gave the lowest onset potential accompanied by the highest OER current density. Furthermore, Ce-13X cal showed the most positive ORR onset potential value of 0.84 V and the most positive ORR half-wave potential of 0.75 V (ca. 50 mV more positive than value for the other three cerium-zeolite electrodes) accompanied by the lowest Tafel slope of 80 mV dec−1. Koutecky-Levich analysis indicated that ORR follows 2-electron pathway. Overall, Ce-13X cal showed the best OER/ORR performances in alkaline solution. © 2022 Elsevier B.V.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{NedićVasiljević2023,

title = {Galvanic displacement of Co with Rh boosts hydrogen and oxygen evolution reactions in alkaline media},

author = {B. Nedić Vasiljević and A. Z. Jovanović and S. V. Mentus and N. V. Skorodumova and I. A. Pašti},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85145722284&doi=10.1007%2fs10008-023-05374-4&partnerID=40&md5=5b43aa2f376abde968b0ffeacfd27ffc},

doi = {10.1007/s10008-023-05374-4},

year  = {2023},

date = {2023-01-01},

journal = {Journal of Solid State Electrochemistry},

abstract = {The growing energy crisis put an emphasis on the development of novel efficient energy conversion and storage systems. Here we show that surface modification of cobalt by a fast galvanic displacement with rhodium significantly affects the activity towards hydrogen (HER) and oxygen evolution reactions (OER) in alkaline media. After only 20 s of galvanic displacement, the HER overpotential is reduced by 0.16 V and OER overpotential by 0.06 V. This means that the predicted water splitting voltage is reduced from 2.03 V (clean Co anode and cathode) to 1.81 V at 10 mA cm−2 (Rh-exchanged Co electrode). During the galvanic displacement process, the surface roughness of the Co electrode does not suffer significant changes, which suggests an increase in the intrinsic catalytic activity. Density Functional Theory calculations show that the reactivity of the Rh-modified Co(0001) surface is modified compared to that of the clean Co(0001). In the case of HER, experimentally observed activity improvements are directly correlated to the weakening of the hydrogen-surface bond, confirming the beneficial role of Rh incorporation into the Co surface. Graphical abstract: [Figure not available: see fulltext.] © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Eichhorn2023,

title = {Synthesis, Crystallographic Structure, Theoretical Analysis, Molecular Docking Studies, and Biological Activity Evaluation of Binuclear Ru(II)-1-Naphthylhydrazine Complex},

author = {T. Eichhorn and F. Kolbe and S. Mišić and D. Dimić and I. Morgan and M. Saoud and D. Milenković and Z. Marković and T. Rüffer and J. Dimitrić Marković and G. N. Kaluđerović},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85145976180&doi=10.3390%2fijms24010689&partnerID=40&md5=9fb47c6b79dc025f4241c9fbf203d65e},

doi = {10.3390/ijms24010689},

year  = {2023},

date = {2023-01-01},

journal = {International Journal of Molecular Sciences},

volume = {24},

number = {1},

abstract = {Ruthenium(II)–arene complexes have gained significant research interest due to their possible application in cancer therapy. In this contribution two new complexes are described, namely [RuCl(η6-p-cymene)2(μ-Cl)(μ-1-N,N′-naphthyl)]X (X = Cl, 1; PF6, 2), which were fully characterized by IR, NMR, and elemental microanalysis. Furthermore, the structure of 2 in the solid state was determined by a single crystal X-ray crystallographic study, confirming the composition of the crystals as 2·2MeOH. The Hirshfeld surface analysis was employed for the investigation of interactions that govern the crystal structure of 2·2MeOH. The structural data for 2 out of 2·2MeOH was used for the theoretical analysis of the cationic part [RuCl(η6-p-cymene)2(μ-Cl)(μ-1-N,N′-naphthyl)]+ (2a) which is common to both 1 and 2. The density functional theory, at B3LYP/6-31+G(d,p) basis set for H, C, N, and Cl atoms and LanL2DZ for Ru ions, was used for the optimization of the 2a structure. The natural bond orbital and quantum theory of atoms in molecules analyses were employed to quantify the intramolecular interactions. The reproduction of experimental IR and NMR spectra proved the applicability of the chosen level of theory. The binding of 1 to bovine serum albumin was examined by spectrofluorimetry and molecular docking, with complementary results obtained. Compound 1 acted as a radical scavenger towards DPPH• and HO• radicals, along with high activity towards cancer prostate and colon cell lines. © 2022 by the authors.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Wilson2023,

title = {Recovery of no-carrier-added 41Ca, 44Ti, and 26Al from high-energy proton-irradiated vanadium targets},

author = {J. M. Wilson and I. Mihalcea and M. Veicht and D. Cvjetinović and D. Schumann},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146644000&doi=10.1515%2fract-2022-0072&partnerID=40&md5=31dced13e9f88a49437b3d4553a7d6c6},

doi = {10.1515/ract-2022-0072},

year  = {2023},

date = {2023-01-01},

journal = {Radiochimica Acta},

abstract = {Many useful and needed radionuclides for medicinal, astrophysical, and environmental research are produced naturally in inefficient quantities or not-at-all. In the method described here, rare cosmogenic isotopes were produced via spallation reactions in metallic vanadium and separated without adding any carriers. In the SINQ facility at the Paul Scherrer Institut, the vanadium targets were irradiated for two years with high-energy protons (≤590 MeV). After a cooling period of eight years, only relatively long-lived radionuclides such as 32Si, 44Ti, 41Ca, and 26Al remain present. After target dissolution, 32Si was first separated for a prospective half-life redetermination. The remaining 32Si-free solution was used for extracting 44Ti, 41Ca, and 26Al, three key isotopes which are scientifically interesting for nuclear astrophysics research as well as medical applications. Each separation scheme employed ion-exchange and extraction chromatography; developed and optimized using inactive model solutions analyzed with Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES). The irradiated samples were tracked with γ-ray spectroscopy for γ-ray emitting impurities. As a result, radiochemically pure sample solutions of 44Ti, 41Ca, and 26Al were obtained as "ready for use"in different application fields. © 2022 Walter de Gruyter GmbH, Berlin/Boston 2022.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Rupar2023,

title = {ORR Catalysts Derived from Biopolymers},

author = {J. Rupar and D. Tekić and A. Janošević Ležaić and K. K. Upadhyay},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146669521&doi=10.3390%2fcatal13010080&partnerID=40&md5=8b39e725abccbd26788d85a7d4259d32},

doi = {10.3390/catal13010080},

year  = {2023},

date = {2023-01-01},

journal = {Catalysts},

volume = {13},

number = {1},

abstract = {Due to the limited reaction rate of the oxygen reduction reaction (ORR), it is considered as a limiting factor in the performance of fuel cells and metal-air batteries. Platinum is considered the benchmark catalyst for ORR; however, the scarcity of platinum, its high price, the drift phenomenon, its insufficient durability, and its susceptibility to gas poisoning are the reasons for the constant search for new ORR catalysts. Carbon-based catalysts show exceptional promise in this respect considering economic profitability and activity, and, in addition, they have favorable conductivity and often a large specific surface area. The use of chitin, cellulose, lignin, coconut shell particles, shrimp shells, and even hair for this purpose was reported, as they had similar electrochemical activity regarding Pt. Alginate, a natural polymer and a constituent of brown algae, can be successfully used to obtain carbon materials that catalyze ORR. In addition, metal atomic-level catalysts and metal N-doped porous carbon materials, obtained from sodium alginate as a precursor, have been proposed as efficient electrocatalysts for ORR. Except for alginate, other biopolymers have been reported to play an important role in the preparation of ORR catalysts. In this review, recent advances regarding biopolymer-derived ORR catalysts are summarized, with a focus on alginate as a source. © 2022 by the authors.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Vesković2023,

title = {Spectroscopic Characterization of the Binding and Release of Hydrophilic, Hydrophobic and Amphiphilic Molecules from Ovalbumin Supramolecular Hydrogels},

author = {A. Vesković and D. Bajuk-Bogdanović and V. B. Arion and A. Popović Bijelić},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146775442&doi=10.3390%2fgels9010014&partnerID=40&md5=30ae75ceaeb032d9e78e1827ca1c576f},

doi = {10.3390/gels9010014},

year  = {2023},

date = {2023-01-01},

journal = {Gels},

volume = {9},

number = {1},

abstract = {Protein-based hydrogels have attracted growing attention for pharmaceutical and biomedical applications. Ovalbumin (OVA), the hen egg white albumin, possessing good foaming and gelling properties and being widely used in the food industry, has recently been indicated as a potential pharmaceutical vehicle. In this study, the binding and release properties of pure OVA hydrogels were investigated by electron paramagnetic resonance (EPR) spin labeling. The comparative analysis between OVA and serum albumin (SA) hydrogels revealed the same release kinetics of hydrophilic 3-carbamoyl-proxyl and 3-carboxy-proxyl, suggesting the diffusion-dominated release of small probes from both hydrogel types. The results obtained with the amphiphilic 16-doxylstearate (16-DS) indicate that OVA, unlike SAs, does not possess a specific fatty acid binding site. However, the OVA hydrogels were able to accommodate a two-fold excess of 16-DS, resulting from protein thermally induced conformational changes, as confirmed by Raman spectroscopy. Similarly, the hydrophobic modified paullone ligand HL, which was initially free in the OVA solution, was bound in the hydrogel. The hydrogels were found to retain a significant amount of 16-DS and HL after 7-day dialysis in physiological saline. The observed facilitated binding of amphiphilic/hydrophobic molecules in OVA hydrogels compared to the solution, and their sustained release, demonstrate the applicability of OVA hydrogels in pharmaceutics. © 2022 by the authors.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Mihailović2023,

title = {Green Synthesis of Silver Nanoparticles Using Salvia verticillata and Filipendula ulmaria Extracts: Optimization of Synthesis, Biological Activities, and Catalytic Properties},

author = {V. Mihailović and N. Srećković and Z. P. Nedić and S. Dimitrijević and M. Matić and A. Obradović and D. Selaković and G. Rosić and J. S. Katanić Stanković},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146791627&doi=10.3390%2fmolecules28020808&partnerID=40&md5=3af3f9ec72f58d5759cd79c2dc0f096b},

doi = {10.3390/molecules28020808},

year  = {2023},

date = {2023-01-01},

journal = {Molecules},

volume = {28},

number = {2},

abstract = {The study’s objective was to obtain silver nanoparticles (SVAgNP and FUAgNP) using aqueous extracts of Salvia verticillata and Filipendula ulmaria. The optimal conditions for nanoparticle synthesis were determined and obtained; nanoparticles were then characterized using UV-Vis, Fourier-transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), Dynamic Light Scattering (DLS), Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM/EDS). SVAgNP and FUAgNP possessed a crystalline structure with 48.42% and 60.41% silver weight, respectively. The highest percentage of nanoparticles in the solution had a diameter between 40 and 70 nm. In DPPH˙ and ABTS˙+ methods, FUAgNP (IC50 15.82 and 59.85 µg/mL, respectively) demonstrated a higher antioxidant capacity than SVAgNP (IC50 73.47 and 79.49 µg/mL, respectively). Obtained nanoparticles also showed pronounced antibacterial activity (MIC ˂ 39.1 µg/mL for most of the tested bacteria), as well as high biocompatibility with the human fibroblast cell line MRC-5 and significant cytotoxicity on some cancer cell lines, especially on the human colon cancer HCT-116 cells (IC50 31.50 and 66.51 µg/mL for SVAgNP and FUAgNP, respectively). The nanoparticles demonstrated high catalytic effectiveness in degrading Congo red dye with NaBH4. The results showed a rapid and low-cost methodology for the synthesis of AgNPs using S. verticillata and F. ulmaria with promising biological potential. © 2023 by the authors.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Gutić2023,

title = {Redrawing HER Volcano with Interfacial Processes—The Role of Hydrogen Spillover in Boosting H2 Evolution in Alkaline Media},

author = {S. J. Gutić and D. Metarapi and A. Z. Jovanović and G. K. Gebremariam and A. S. Dobrota and B. Nedić Vasiljević and I. A. Pašti},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146799013&doi=10.3390%2fcatal13010089&partnerID=40&md5=dd62c6150813b92357326554afc928d9},

doi = {10.3390/catal13010089},

year  = {2023},

date = {2023-01-01},

journal = {Catalysts},

volume = {13},

number = {1},

abstract = {The requirements for the efficient replacement of fossil fuel, combined with the growing energy crisis, places focus on hydrogen production. Efficient and cost-effective electrocatalysts are needed for H2 production, and novel strategies for their discovery must be developed. Here, we utilized Kinetic Monte Carlo (KMC) simulations to demonstrate that hydrogen evolution reaction (HER) can be boosted via hydrogen spillover to the support when the catalyst surface is largely covered by adsorbed hydrogen under operating conditions. Based on the insights from KMC, we synthesized a series of reduced graphene-oxide-supported catalysts and compared their activities towards HER in alkaline media with that of corresponding pure metals. For Ag, Au, and Zn, the support effect is negative, but for Pt, Pd, Fe, Co, and Ni, the presence of the support enhances HER activity. The HER volcano, constructed using calculated hydrogen binding energies and measured HER activities, shows a positive shift of the strong binding branch. This work demonstrates the possibilities of metal–support interface engineering for producing effective HER catalysts and provides general guidelines for choosing novel catalyst–support combinations for electrocatalytic hydrogen production. © 2023 by the authors.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Al-Hamry2023,

title = {Layer-by-Layer Deposited Multi-Modal PDAC/rGO Composite-Based Sensors},

author = {A. Al-Hamry and T. Lu and J. Bai and A. Adiraju and T. K. Ega and I. A. Pašti and O. Kanoun},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85146822949&doi=10.3390%2ffoods12020268&partnerID=40&md5=7d7d7b0d769b7fd6de9dad6cf0101671},

doi = {10.3390/foods12020268},

year  = {2023},

date = {2023-01-01},

journal = {Foods},

volume = {12},

number = {2},

abstract = {Different environmental parameters, such as temperature and humidity, aggravate food spoilage, and different volatile organic compounds (VOCs) are released based on the extent of spoilage. In addition, a lack of efficient monitoring of the dosage of pesticides leads to crop failure. This could lead to the loss of food resources and food production with harmful contaminants and a short lifetime. For this reason, precise monitoring of different environmental parameters and contaminations during food processing and storage is a key factor for maintaining its safety and nutritional value. Thus, developing reliable, efficient, cost-effective sensor devices for these purposes is of utmost importance. This paper shows that Poly-(diallyl-dimethyl ammonium chloride)/reduced Graphene oxide (PDAC/rGO) films produced by a simple Layer-by-Layer deposition can be effectively used to monitor temperature, relative humidity, and the presence of volatile organic compounds as indicators for spoilage odors. At the same time, they show potential for electrochemical detection of organophosphate pesticide dimethoate. By monitoring the resistance/impedance changes during temperature and relative humidity variations or upon the exposure of PDAC/rGO films to methanol, good linear responses were obtained in the temperature range of 10–100 °C, 15–95% relative humidity, and 35 ppm–55 ppm of methanol. Moreover, linearity in the electrochemical detection of dimethoate is shown for the concentrations in the order of 102 µmol dm−3. The analytical response to different external stimuli and analytes depends on the number of layers deposited, affecting sensors’ sensitivity, response and recovery time, and long-term stability. The presented results could serve as a starting point for developing advanced multi-modal sensors and sensor arrays with high potential for analytical applications in food safety and quality monitoring. © 2023 by the authors.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Ahmetović2023,

title = {Examination of the doping effects of samarium (Sm3+) and zirconium (Zr4+) on the photocatalytic activity of TiO2 nanofibers},

author = {S. Ahmetović and Z. Ž. Vasiljević and V. Rajić and D. Bartolić and M. Novaković and N. B. Tadić and N. Cvjetićanin and M. V. Nikolić},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85139325540&doi=10.1016%2fj.jallcom.2022.167423&partnerID=40&md5=049839b657b2ce5b2888e0d72432d3f0},

doi = {10.1016/j.jallcom.2022.167423},

year  = {2023},

date = {2023-01-01},

journal = {Journal of Alloys and Compounds},

volume = {930},

abstract = {Pure and samarium (Sm3+) - or zirconium (Zr4+)-doped TiO2 nanofibers were synthesized by electrospinning method followed by calcination at 500 °C for 1 h. As-spun fibers were smooth, straight and continuous, whilst EDS analysis confirmed the fiber composition and incorporation of dopants in the fibers. Doping with Sm3+ and Zr4+ greatly inhibited the phase transformation of anatase to rutile, by surrounding of Sm3+ ions through formation of Ti-O-Sm bonds and by replacement of Ti4+ ions with larger Zr4+ ions. This was confirmed by HRTEM and SAED analysis. The size of nanofibers was determined to be 133 nm, 175 nm and 155 nm for pure, (0.5%)Sm3+:TiO2 and (1%)Zr4+:TiO2, respectively. After calcination, TiO2 crystal lattice with interplanar spacing of 0.353 nm of (101) crystal plane was not significantly disturbed by Sm doping whilst crystal lattice spacing of 0.357 nm of (101) planes of anatase phase in case TiO2:1.0%Zr4+, significantly differs from the value of pure TiO2 (0.352 nm), thus implying that Zr was doped into substitutional sites of the TiO2 lattice. The indirect band gaps were calculated to be in the range 3.07–3.24 eV. TiO2:0.5%Sm3+ and TiO2:1.0%Zr4+ exhibited higher specific surface area, of 47.1 and 59.4 m2/g, respectively, than pure TiO2 fibers (19.7 m2/g). Effects of Sm3+ and Zr4+ dopant content on the photodegradation efficiency of methylene blue (MB) were studied. TiO2:0.5%Sm3+ and TiO2:1.0%Zr4+ nanofibers have shown the highest photocatalytic activity of 97% and 98% with constant rates 0.01768 min−1 and 0.01939 min−1, respectively, within180 min irradiation under visible light. © 2022 Elsevier B.V.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Jelić20231669,

title = {Thermal stability and antimicrobial properties of pure and modified pyrophyllite (PYRO/Ag) clay},

author = {D. Jelić and J. Todorović and M. Saletović and A. Šmitran and S. Mentus},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127598311&doi=10.1007%2fs10973-022-11303-w&partnerID=40&md5=dfdf5a209836bb45f02f10b5c0ca04df},

doi = {10.1007/s10973-022-11303-w},

year  = {2023},

date = {2023-01-01},

journal = {Journal of Thermal Analysis and Calorimetry},

volume = {148},

number = {4},

pages = {1669-1678},

abstract = {Clays, inorganic materials with layered crystal structure, are widely used as a pharmaceutical excipients and active substances. The pyrophyllite, Al2Si4O10(OH)2, is an aluminosilicate mineral, that together with talc belongs to a specific sub-clay group. In this study, we examined some aspects of the use of pyrrophylite as a talc substitute. In this study, two pyrophyllite modifications have been investigated: the original pure pyrophyllite (labeled as PYRO), and that modified by incorporation of nanodispersed silver (labeled as PYRO/Ag). For pyrophyllite application in medicine, its thermal stability is of great importance. As an accelerated study of thermal stability, we employed simultaneous thermogravimetry and differential thermal analysis (TG/DTA) methods in dynamic (non-isothermal) regime in inert (N2) atmosphere. Pyrophyllite clay decomposition has been proved to proceed in two steps: moisture removal (I stage) and dehydroxilation (II stage). It must be stressed that these two degradation stages are not strictly separated. The kinetic parameters of decomposition reactions were examined by both isoconversional and model-fitting analytical procedures. The isoconversional Friedman model amounted activation energy (Ea) value on 65 kJ mol−1 and 214 kJ mol−1 for vaporization and dehydroxilation process, respectively. Fitting procedure revealed that vaporization process is of the n-th order (with activation energy, frequency factor and reaction order Ea = 66.6 kJ mol−1},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Milanović2023,

title = {Influence of acid-base equilibria on the rate of the chemical reaction in the advanced oxidation processes: Coumarin derivatives and hydroxyl radical},

author = {Milanović and D. Dimić and M. Antonijević and M. Žižić and D. Milenković and E. Avdović and Z. Marković},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85144074627&doi=10.1016%2fj.cej.2022.139648&partnerID=40&md5=703d8f4509bcdf8b06c166ddccd3e385},

doi = {10.1016/j.cej.2022.139648},

year  = {2023},

date = {2023-01-01},

journal = {Chemical Engineering Journal},

volume = {453},

abstract = {The decomposition and chemical manipulation of stable aromatic pollutants into less toxic products is an important topic for wastewater management and natural water remediation. The mechanism of the Advanced Oxidation Process (AOPs) of 4,7-dihydroxycoumarin (4,7-DHC) and 7-hydroxycoumarin (7-HC), as examples of stable naturally-occurring industrially-important compounds, in the presence of hydroxyl radical (HO[rad]) in the aqueous solution has been analyzed using Electron Paramagnetic Resonance spectroscopy (EPR) and Quantum Mechanics-based test for Overall Free Radical Scavenging Activity (QM-ORSA). The effect of pH values of the medium on the investigated reaction mechanisms has been fully investigated. The rate constants were estimated by the conventional transition state theory (TST) and Eckart's method (ZCT_0). Estimated values of the overall rate constant (koverall) higher than >4.06 × 109 M−1 s−1 at all pH values showed that both compounds undergo a chemical transformation when exposed to HO[rad]. When pH increased in the range of 0–14, the koverall increased from 4.06 × 109 to 1.11 × 1010 (4.7-DHC) and 2.09 × 109 to 1.76 × 1010 M−1s−1 (7-HC). At physiological pH = 7.4 value, 7-HC was ∼1.5 times more prone to radical action, as shown by EPR and QM-ORSA, due to the dominant anionic form. Both compounds were more reactive towards HO[rad] than Trolox at this pH value. The ecotoxicity assessment of the starting compounds, intermediates and oxidation products indicated that the formed products show lower acute and chronic toxicity effects on aquatic organisms than starting compounds, which is a prerequisite for the development of novel AOPs procedures. © 2022 Elsevier B.V.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Denisov2023,

title = {Light-Induced Agglomeration of Single-Atom Platinum in Photocatalysis},

author = {N. Denisov and S. Qin and J. Will and B. N. Vasiljevic and N. V. Skorodumova and I. A. Pašti and B. B. Sarma and B. Osuagwu and T. Yokosawa and J. Voss and J. Wirth and E. Spiecker and P. Schmuki},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85144272217&doi=10.1002%2fadma.202206569&partnerID=40&md5=99a7a5032b07c427bfff49022b15d3cc},

doi = {10.1002/adma.202206569},

year  = {2023},

date = {2023-01-01},

journal = {Advanced Materials},

volume = {35},

number = {5},

abstract = {With recent advances in the field of single-atoms (SAs) used in photocatalysis, an unprecedented performance of atomically dispersed co-catalysts has been achieved. However, the stability and agglomeration of SA co-catalysts on the semiconductor surface may represent a critical issue in potential applications. Here, the photoinduced destabilization of Pt SAs on the benchmark photocatalyst, TiO2, is described. In aqueous solutions within illumination timescales ranging from few minutes to several hours, light-induced agglomeration of Pt SAs to ensembles (dimers, multimers) and finally nanoparticles takes place. The kinetics critically depends on the presence of sacrificial hole scavengers and the used light intensity. Density-functional theory calculations attribute the light induced destabilization of the SA Pt species to binding of surface-coordinated Pt with solution-hydrogen (adsorbed H atoms), which consequently weakens the Pt SA bonding to the TiO2 surface. Despite the gradual aggregation of Pt SAs into surface clusters and their overall reduction to metallic state, which involves >90% of Pt SAs, the overall photocatalytic H2 evolution remains virtually unaffected. © 2022 The Authors. Advanced Materials published by Wiley-VCH GmbH.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Jeeva2023,

title = {Structural, spectroscopic, quantum chemical, and molecular docking study towards cartilage protein of (3E,3′E)-3,3′-(1,4-phenylenebis(azanediyl))bis(cyclohex-2-en-1-one)},

author = {P. Jeeva and S. Sudha and A. Rakić and D. Dimić and D. Ramarajan and D. Barathi},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85140955373&doi=10.1016%2fj.molstruc.2022.134429&partnerID=40&md5=98dd2c0562b9423d8351612512ba6b48},

doi = {10.1016/j.molstruc.2022.134429},

year  = {2023},

date = {2023-01-01},

journal = {Journal of Molecular Structure},

volume = {1274},

abstract = {This article presents the results of the structural and spectroscopic analysis of (3E,3′E)-3,3′-(1,4-phenylenebis(azanediyl))bis(cyclohex-2-en-1-one) by the means of IR, Raman, NMR, and Density functional theory methods. The structure of the compound was optimized at the B3LYP/6-311++G(d,p) level of theory. The NMR spectra were predicted using the Gauge Independent Atomic Orbital approach. The mean absolute differences between experimental and theoretical chemical shifts were 0.44 and 2.3 ppm for 1H and 13C NMR spectra thus proving the applicability of the chosen level of theory. The vibrational (IR and Raman) spectra were assigned based on the optimized structure following the Potential Energy Distribution (PED) analysis. The intermolecular interactions governing the stability of the compound were investigated by the Natural Bond Orbital and Quantum Theory of Atoms in Molecules analyses. The active positions in the compound were assessed by the Fukui functions calculation and Molecular electrostatic potential map. The inhibitory activity of the compound was analyzed by molecular docking toward cartilage proteins. This activity, along with the groups included in interactions, proved the activity of various parts of the molecule. The inhibitory activity was higher than that of a native ligand. The ecotoxicity assessment proved low toxicity towards aquatic organisms. These results show the high potential of enaminone derivatives obtained under mild conditions. © 2022},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Marinković202266,

title = {Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites},

author = {F. Marinković and D. Popović and J. Jovanović and B. Stanković and S. Jevtić and B. Adnadjević},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85113336189&doi=10.1002%2fpi.6284&partnerID=40&md5=11070ba90d1109d605bef108f81757c6},

doi = {10.1002/pi.6284},

year  = {2022},

date = {2022-01-01},

journal = {Polymer International},

volume = {71},

number = {1},

pages = {66-73},

abstract = {The effect of the weight fraction of NaA zeolite on thermal properties (specific heat capacity, thermal diffusivity, thermal conductivity) and dielectric properties (electrical conductivity, real and imaginary electric permittivity) of composites based on low-density polyethylene (LDPE) and NaA zeolite is examined. Composite samples containing from 5 to 30 wt% zeolite are prepared using the compression molding technique. The degree of dispersion and the weight fraction of filler in the LDPE/NaA zeolite composites are determined using X-ray diffraction. A linear decrease in the values of the specific heat capacity with an increase in the weight fraction of zeolite is observed using differential scanning calorimetry. The laser flash method is used to determine the thermal diffusivity of the composites. An increase in effective thermal diffusivity and abrupt increase in the range from 15 to 20 wt% of zeolite are established. It is demonstrated that effective thermal conductivity increases with an increase in the weight fraction of zeolite, and an abrupt increase in the range from 15 to 20 wt% is observed. Dielectric spectroscopy measurements are performed to determine the real and imaginary parts of permittivity. An increase of real and imaginary parts of permittivity of LDPE/NaA zeolite composites, with increasing weight fraction of zeolite, is established. Two relaxation peaks of the imaginary parts of permittivity of LDPE/NaA zeolite composites are detected. An increase of electrical conductivity with increasing weight fraction of zeolite and abrupt increase in the range 15 to 20 wt% are noticed. © 2021 Society of Industrial Chemistry. © 2021 Society of Industrial Chemistry.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Bosnar2022,

title = {Overcoming phase separation in dual templating: A homogeneous hierarchical ZSM-5 zeolite with flower-like morphology, synthesis and in-depth acidity study},

author = {S. Bosnar and V. Rac and D. Stošić and A. Travert and G. Postole and A. Auroux and S. Škapin and L. Damjanović-Vasilić and J. Bronić and X. Du and S. Marković and V. Pavlović and V. Rakić},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118483367&doi=10.1016%2fj.micromeso.2021.111534&partnerID=40&md5=7077404fa49ca1e0b4b19cff7d6b8341},

doi = {10.1016/j.micromeso.2021.111534},

year  = {2022},

date = {2022-01-01},

journal = {Microporous and Mesoporous Materials},

volume = {329},

abstract = {Dual templating approach, using hexadecyltrimethylammonium bromide (CTAB), was employed in an attempt to synthesize hierarchical ZSM-5 zeolite. Amount of mesoporogen and the duration of aging of the precursor were varied. Majority of the synthesis routes resulted in phase separation, yielding separate ZSM-5 and amorphous mesoporous material. The relative amounts of the two phases were dependent on the CTAB amount ratio and also significantly on the duration of precursor aging before CTAB addition. One particular combination of the two factors led to the formation of a homogeneous hierarchical form of ZSM-5 with leafy morphology, consisting of intergrown thin crystalline sheets which formed flower-like structures. The hierarchical ZSM-5 possessed significant microporous (≈95 m2/g) and highly developed mesoporous surface (≈470 m2/g), with a relatively broad distribution of mesopore sizes (<20 nm). The acidity of all samples was studied in detail. Isothermal microcalorimetry/volumetry of ammonia adsorption provided quantitative data on the number and distribution of strength of acidic sites. In situ FTIR of pyridine and collidine adsorption was used to quantify Brønsted and Lewis acid sites, and to provide information on their location - in the micropores or mesopores/external surface. The hierarchical ZSM-5 possessed both Lewis and Brønsted acidity, with Brønsted sites located mainly in the micropores. All samples were fully characterized using XRD, low temperature nitrogen adsorption, FESEM and EDS. The synthetic route used for obtaining the ZSM-5 zeolite with flower-like morphology is a simple strategy for preparing hierarchical ZSM-5 forms targeting enhanced diffusivity and accessibility of catalytically active sites. © 2021 Elsevier Inc.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Kiris2022,

title = {Laser-induced breakdown spectroscopy analysis of water solutions deposited on PTFE surface: Influence of copper oxide nanoparticles and NELIBS effect},

author = {V. Kiris and J. Savovic and A. Nevar and M. Kuzmanovic and M. Nedelko and D. Rankovic and N. Tarasenko},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119849736&doi=10.1016%2fj.sab.2021.106333&partnerID=40&md5=3ed81efe1c6f8d423ec61a03d5a3ea36},

doi = {10.1016/j.sab.2021.106333},

year  = {2022},

date = {2022-01-01},

journal = {Spectrochimica Acta - Part B Atomic Spectroscopy},

volume = {187},

abstract = {The analytical potential of LIBS for the analysis of liquid solutions was evaluated using two experimental setups, one based on a TEA CO2 laser and the other in which Nd:YAG laser was used. Polytetrafluoroethylene (PTFE) was used as a substrate on which a 10 μL drop of analyte solutions with different concentrations of analyte elements, Be, Cr, Ni, Co, Pb, Tl, and V, were deposited and dried. The samples were deposited either directly on the PTFE or over the pre-deposited layer of copper oxide nanoparticles to study the influence of nanoparticles (NPs) on the ablation and plasma excitation. The obtained results imply that the presence of Cu oxide NPs does not significantly affect the analytical performance of LIBS based on TEA CO2 laser for analysis of solutions. At the same time, it was shown that plasma created by TEA CO2 laser radiation efficiently excited ablated material, making metal elements detectable in the sub-ppm concentration range. On the other hand, Cu oxide NPs significantly influence the formation and the analytical properties of plasma induced by Nd:YAG laser. Without the presence of NPs, the intensities of analyte lines were very low, unsuitable for spectrochemical analysis. At the optimal surface concentration of NPs, 0.36 mg/cm2, the intensity of analyte lines was increased more than ten times. Limits of detection of Be and Cr were 5.3 ppb and 33 ppb, with good linearity of curves of growth. © 2021 Elsevier B.V.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Mišović2022,

title = {Properties of free-standing graphene oxide/silver nanowires films and effects of chemical reduction and gamma irradiation},

author = {A. Mišović and D. B. Bogdanović and D. Kepić and V. Pavlović and M. Huskić and N. Hasheminejad and C. Vuye and N. Zorić and S. Jovanović},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85120943690&doi=10.1016%2fj.synthmet.2021.116980&partnerID=40&md5=2445931ce08444a4ed98bcff5ffcbfe0},

doi = {10.1016/j.synthmet.2021.116980},

year  = {2022},

date = {2022-01-01},

journal = {Synthetic Metals},

volume = {283},

abstract = {The need for stable, chemical resistant and conductive materials is on the rise in recent times. Graphene shows promising electrical conductivity and chemical stability, but the production of a continual, conductive layer is limited and expensive. Silver nanowires (AgNWs) are both conducive and economically viable, but they are sensitive to water and oxygen. In this study, graphene oxide (GO) and AgNWs were synthesized and combined in different mass ratios (3:1, 2.5:1.5, and 1:1) to obtain chemically stable composites with improved electrical properties. Composites were reduced using ascorbic acid. With the increase of AgNWs to GO mass ratio, the surface of the free-standing composite film improved: the root mean square roughness was lowered from 376 nm for GO to 168 nm for the composite with the mass ratio of GO:AgNWs 1:1, while the sheet resistance was lowered from 146 × 106 Ω/□ to 4 Ω/□. For the first time, the effects of gamma irradiation on the structure of the composites were studied. Doses of 15, 25, and 35 kGy were applied. © 2021 Elsevier B.V.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Rakočević2022,

title = {Ptau nanoparticles supported by reduced graphene oxide as a highly active catalyst for hydrogen evolution},

author = {L. Rakočević and I. S. Simatović and A. Maksić and V. Rajić and S. Štrbac and I. Srejić},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85122024529&doi=10.3390%2fcatal12010043&partnerID=40&md5=f9001f6ed4fbad293463a76d7dee375c},

doi = {10.3390/catal12010043},

year  = {2022},

date = {2022-01-01},

journal = {Catalysts},

volume = {12},

number = {1},

abstract = {PtAu nanoparticles spontaneously deposited on graphene support, PtAu/rGO, have shown remarkably high catalytic activity for hydrogen evolution reaction (HER) in sulfuric acid solution. SEM images of the PtAu/rGO electrode surface showed that Pt nanoparticles that are non-uniform in size occupy both the edges of previously deposited uniform Au nanoparticles and the edges of graphene support. XPS analysis showed that the atomic percentages of Au and Pt in PtAu/rGO were 0.6% and 0.3%, respectively. The atomic percentage of Au alone on previously prepared Au/rGO was 0.7%. Outstanding HER activity was achieved for the PtAu/rGO electrode, showing the initial potential close to the equilibrium potential for HER and a low Tafel slope of −38 mV/dec. This was confirmed by electrochemical impedance spectroscopy. The chronoamperometric measurement performed for 40 min for hydrogen evolution at a constant potential indicated good stability and durability of the PtAu/rGO electrode. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Dimic2022,

title = {Synthesis, Crystallographic, Quantum Chemical, Antitumor, and Molecular Docking/Dynamic Studies of 4-Hydroxycoumarin-Neurotransmitter Derivatives},

author = {D. S. Dimic and G. N. Kaluderovic and E. H. Avdovic and D. A. Milenkovic and M. N. Živanovic and I. Potocnák and E. Samolová and M. S. Dimitrijevic and L. Saso and Z. S. Markovic and J. M. Dimitric Markovic},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85123425882&doi=10.3390%2fijms23021001&partnerID=40&md5=e0c2b9d4d4cdb7b3440d6d526483f476},

doi = {10.3390/ijms23021001},

year  = {2022},

date = {2022-01-01},

journal = {International Journal of Molecular Sciences},

volume = {23},

number = {2},

abstract = {In this contribution, four new compounds synthesized from 4-hydroxycoumarin and tyramine/octopamine/norepinephrine/3-methoxytyramine are characterized spectroscopically (IR and NMR), chromatographically (UHPLC-DAD), and structurally at the B3LYP/6-311++G*(d,p) level of theory. The crystal structure of the 4-hydroxycoumarin-octopamine derivative was solved and used as a starting geometry for structural optimization. Along with the previously obtained 4-hydroxycoumarin-dopamine derivative, the intramolecular interactions governing the stability of these compounds were quantified by NBO and QTAIM analyses. Condensed Fukui functions and the HOMO-LUMO gap were calculated and correlated with the number and position of OH groups in the structures. In vitro cytotoxicity experiments were performed to elucidate the possible antitumor activity of the tested substances. For this purpose, four cell lines were selected, namely human colon cancer (HCT-116), human adenocarcinoma (HeLa), human breast cancer (MDA-MB-231), and healthy human lung fibroblast (MRC-5) lines. A significant selectivity towards colorectal carcinoma cells was observed. Molecular docking and molecular dynamics studies with carbonic anhydrase, a prognostic factor in several cancers, complemented the experimental results. The calculated MD binding energies coincided well with the experimental activity, and indicated 4-hydroxycoumarin-dopamine and 4-hydroxycoumarin-3-methoxytyramine as the most active compounds. The ecotoxicology assessment proved that the obtained compounds have a low impact on the daphnia, fish, and green algae population. © 2022 by the authors.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}