TY  - JOUR
AU  - Mutić, Tijana
AU  - Ognjanović, Miloš
AU  - Ivković, Đurđa
AU  - Nikolić, Vladimir
AU  - Stanković, Vesna
AU  - Ristivojević, Petar
AU  - Stanković, Dalibor
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13031
AB  - In this study, we successfully prepared a modified nickel oxide (NiO) carbon paste electrode to detect gallic acid (GA). NiO nanoparticles were synthesized by the simple, organic solvent-free chemical coprecipitation method, and the electrochemical properties of the electrode and GA were thoroughly investigated using CV, SWV, and EIS, while morphological properties were examined using ICP-OES, TEM, SEM, and XRD. Excellent catalytic characteristics are displayed by the developed material which facilitates the interaction of the target with the electrode surface. The obtained electrochemical information showed that the incorporation of NiO nanoparticles to the carbon paste electrode effectively facilitates electron transfer processes and enriches the catalytic response of the carbon paste electrode. The fabricated NiO/CPE sensor showed a satisfactory linear relationship between peak current and GA concentration in the broad range of 0.2–100 μM and 100–200 μM with a low detection limit of 0.04 μM and limit of quantification of 0.12 μM at pH 3 of BRBS as supporting electrolyte. The selectivity of the proposed method was satisfactory, with acceptable stability, considerable repeatability, and accurate reproducibility. Moreover, the good practicability performance could be effectuated at the NiO/CPE sensor for the quantitative analysis of GA in bourtree, walnut, primrose, and chamomile tea samples. The results were compared with the standard DPPH test and statistical processing of the results was performed, which confirmed the excellent agreement between the two methods. The developed method can provide a cost-effective, rapid, selective, and sensitive means for GA monitoring. When compared to other works, the developed technique has a wider linear range and lower LOD and LOQ, which makes this work a very important reference for the highly sensitive analysis of GA in the field of food safety.
T2  - Journal of Electroanalytical Chemistry
T1  - Improving gallic acid detection in plant samples: Fabrication and optimization of a sensitive and selective NiO-supported carbon paste electrode
VL  - 960
SP  - 118213
DO  - 10.1016/j.jelechem.2024.118213
ER  - 

@article{
author = "Mutić, Tijana and Ognjanović, Miloš and Ivković, Đurđa and Nikolić, Vladimir and Stanković, Vesna and Ristivojević, Petar and Stanković, Dalibor",
year = "2024",
abstract = "In this study, we successfully prepared a modified nickel oxide (NiO) carbon paste electrode to detect gallic acid (GA). NiO nanoparticles were synthesized by the simple, organic solvent-free chemical coprecipitation method, and the electrochemical properties of the electrode and GA were thoroughly investigated using CV, SWV, and EIS, while morphological properties were examined using ICP-OES, TEM, SEM, and XRD. Excellent catalytic characteristics are displayed by the developed material which facilitates the interaction of the target with the electrode surface. The obtained electrochemical information showed that the incorporation of NiO nanoparticles to the carbon paste electrode effectively facilitates electron transfer processes and enriches the catalytic response of the carbon paste electrode. The fabricated NiO/CPE sensor showed a satisfactory linear relationship between peak current and GA concentration in the broad range of 0.2–100 μM and 100–200 μM with a low detection limit of 0.04 μM and limit of quantification of 0.12 μM at pH 3 of BRBS as supporting electrolyte. The selectivity of the proposed method was satisfactory, with acceptable stability, considerable repeatability, and accurate reproducibility. Moreover, the good practicability performance could be effectuated at the NiO/CPE sensor for the quantitative analysis of GA in bourtree, walnut, primrose, and chamomile tea samples. The results were compared with the standard DPPH test and statistical processing of the results was performed, which confirmed the excellent agreement between the two methods. The developed method can provide a cost-effective, rapid, selective, and sensitive means for GA monitoring. When compared to other works, the developed technique has a wider linear range and lower LOD and LOQ, which makes this work a very important reference for the highly sensitive analysis of GA in the field of food safety.",
journal = "Journal of Electroanalytical Chemistry",
title = "Improving gallic acid detection in plant samples: Fabrication and optimization of a sensitive and selective NiO-supported carbon paste electrode",
volume = "960",
pages = "118213",
doi = "10.1016/j.jelechem.2024.118213"
}

Mutić, T., Ognjanović, M., Ivković, Đ., Nikolić, V., Stanković, V., Ristivojević, P.,& Stanković, D.. (2024). Improving gallic acid detection in plant samples: Fabrication and optimization of a sensitive and selective NiO-supported carbon paste electrode. in Journal of Electroanalytical Chemistry, 960, 118213.
https://doi.org/10.1016/j.jelechem.2024.118213

Mutić T, Ognjanović M, Ivković Đ, Nikolić V, Stanković V, Ristivojević P, Stanković D. Improving gallic acid detection in plant samples: Fabrication and optimization of a sensitive and selective NiO-supported carbon paste electrode. in Journal of Electroanalytical Chemistry. 2024;960:118213.
doi:10.1016/j.jelechem.2024.118213 .

Mutić, Tijana, Ognjanović, Miloš, Ivković, Đurđa, Nikolić, Vladimir, Stanković, Vesna, Ristivojević, Petar, Stanković, Dalibor, "Improving gallic acid detection in plant samples: Fabrication and optimization of a sensitive and selective NiO-supported carbon paste electrode" in Journal of Electroanalytical Chemistry, 960 (2024):118213,
https://doi.org/10.1016/j.jelechem.2024.118213 . .

TY  - JOUR
AU  - Maslovara, Slađana
AU  - Vasić-Anićijević, Dragana
AU  - Šaponjić, Aleksandra
AU  - Đurđević-Milošević, Dragica
AU  - Nikolić, Željka
AU  - Nikolić, Vladimir
AU  - Marčeta-Kaninski, Milica
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13100
AB  - Electrodeposition of selected d-metals by in-situ electrodeposition as a method for improvement of electrocatalytic activity of conventional electrodes for alkaline hydrogen evolution has been attracting the attention of researchers for about two decades. The modification of metal electrodes by ionic activators as a combination of two (binary systems) or three (ternary systems) d-metal complexes added in electrolytic solution were represented in many studies. Better catalytic performances and higher energy efficiency compared to the common electrodes is provided by a number of affordable and inexpensive solutions resulting from this research. Based on the combinations of selected d-metal complexes added in-situ to the electrolyte during electrolysis, this work provides a systematic overview of the binary and ternary systems of ionic activators, that contribute to energy savings in alkaline electrolysers, with the particular attention paid to the discussion of similarities and universal principles. Theoretical background and the fundamental properties that lay beyond the observed improvements of electrode performance upon activation by ionic activators is also represented.
T2  - Science of Sintering
T1  - Comparative analysis of in-situ ionic activators for increased energy efficiency process in alkaline electrolysers
IS  - InPress
DO  - 10.2298/SOS231116001M
ER  - 

@article{
author = "Maslovara, Slađana and Vasić-Anićijević, Dragana and Šaponjić, Aleksandra and Đurđević-Milošević, Dragica and Nikolić, Željka and Nikolić, Vladimir and Marčeta-Kaninski, Milica",
year = "2024",
abstract = "Electrodeposition of selected d-metals by in-situ electrodeposition as a method for improvement of electrocatalytic activity of conventional electrodes for alkaline hydrogen evolution has been attracting the attention of researchers for about two decades. The modification of metal electrodes by ionic activators as a combination of two (binary systems) or three (ternary systems) d-metal complexes added in electrolytic solution were represented in many studies. Better catalytic performances and higher energy efficiency compared to the common electrodes is provided by a number of affordable and inexpensive solutions resulting from this research. Based on the combinations of selected d-metal complexes added in-situ to the electrolyte during electrolysis, this work provides a systematic overview of the binary and ternary systems of ionic activators, that contribute to energy savings in alkaline electrolysers, with the particular attention paid to the discussion of similarities and universal principles. Theoretical background and the fundamental properties that lay beyond the observed improvements of electrode performance upon activation by ionic activators is also represented.",
journal = "Science of Sintering",
title = "Comparative analysis of in-situ ionic activators for increased energy efficiency process in alkaline electrolysers",
number = "InPress",
doi = "10.2298/SOS231116001M"
}

Maslovara, S., Vasić-Anićijević, D., Šaponjić, A., Đurđević-Milošević, D., Nikolić, Ž., Nikolić, V.,& Marčeta-Kaninski, M.. (2024). Comparative analysis of in-situ ionic activators for increased energy efficiency process in alkaline electrolysers. in Science of Sintering(InPress).
https://doi.org/10.2298/SOS231116001M

Maslovara S, Vasić-Anićijević D, Šaponjić A, Đurđević-Milošević D, Nikolić Ž, Nikolić V, Marčeta-Kaninski M. Comparative analysis of in-situ ionic activators for increased energy efficiency process in alkaline electrolysers. in Science of Sintering. 2024;(InPress).
doi:10.2298/SOS231116001M .

Maslovara, Slađana, Vasić-Anićijević, Dragana, Šaponjić, Aleksandra, Đurđević-Milošević, Dragica, Nikolić, Željka, Nikolić, Vladimir, Marčeta-Kaninski, Milica, "Comparative analysis of in-situ ionic activators for increased energy efficiency process in alkaline electrolysers" in Science of Sintering, no. InPress (2024),
https://doi.org/10.2298/SOS231116001M . .

TY  - JOUR
AU  - Perović, Ivana
AU  - Marčeta Kaninski, Milica
AU  - Tasić, Gvozden
AU  - Maslovara, Slađana Lj.
AU  - Laušević, Petar
AU  - Seović, Mina
AU  - Nikolić, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11435
AB  - Green hydrogen produced by alkaline electrolysis is a promising solution to address the world’s increasing energy demand while mitigating greenhouse gas emissions. However, the efficient and cost-effective production of green hydrogen via alkaline electrolysis requires improvements. This paper presents an in situ activation process that simplifies the alkaline electrolysis technology while enhancing the catalytic activity of electrodes for the hydrogen evolution reaction. The aim of this research is to enhance the energy efficiency of alkaline electrolysis and decrease the energy consumption for hydrogen production. To achieve this goal, ionic activators comprising Ni, Zn, and Mo were incorporated into the standard electrolyte solution. Our results demonstrate that the anticipated improvement in the catalytic activity of the d-metal combination, surpassing even that of precious metals, has been successfully attained. As a result, a 20% reduction in energy consumption (REC) for the hydrogen produced has been observed. The catalytic activity of the added activators for the hydrogen evolution reaction was discussed by analyzing the mechanism of the reaction via Tafel analysis and EIS techniques. These findings offer a promising approach to improve alkaline electrolysis and enhance the production of green hydrogen.
T2  - Materials
T1  - Enhanced Catalytic Activity and Energy Savings with Ni-Zn-Mo Ionic Activators for Hydrogen Evolution in Alkaline Electrolysis
VL  - 16
IS  - 15
SP  - 5268
DO  - 10.3390/ma16155268
ER  - 

@article{
author = "Perović, Ivana and Marčeta Kaninski, Milica and Tasić, Gvozden and Maslovara, Slađana Lj. and Laušević, Petar and Seović, Mina and Nikolić, Vladimir",
year = "2023",
abstract = "Green hydrogen produced by alkaline electrolysis is a promising solution to address the world’s increasing energy demand while mitigating greenhouse gas emissions. However, the efficient and cost-effective production of green hydrogen via alkaline electrolysis requires improvements. This paper presents an in situ activation process that simplifies the alkaline electrolysis technology while enhancing the catalytic activity of electrodes for the hydrogen evolution reaction. The aim of this research is to enhance the energy efficiency of alkaline electrolysis and decrease the energy consumption for hydrogen production. To achieve this goal, ionic activators comprising Ni, Zn, and Mo were incorporated into the standard electrolyte solution. Our results demonstrate that the anticipated improvement in the catalytic activity of the d-metal combination, surpassing even that of precious metals, has been successfully attained. As a result, a 20% reduction in energy consumption (REC) for the hydrogen produced has been observed. The catalytic activity of the added activators for the hydrogen evolution reaction was discussed by analyzing the mechanism of the reaction via Tafel analysis and EIS techniques. These findings offer a promising approach to improve alkaline electrolysis and enhance the production of green hydrogen.",
journal = "Materials",
title = "Enhanced Catalytic Activity and Energy Savings with Ni-Zn-Mo Ionic Activators for Hydrogen Evolution in Alkaline Electrolysis",
volume = "16",
number = "15",
pages = "5268",
doi = "10.3390/ma16155268"
}

Perović, I., Marčeta Kaninski, M., Tasić, G., Maslovara, S. Lj., Laušević, P., Seović, M.,& Nikolić, V.. (2023). Enhanced Catalytic Activity and Energy Savings with Ni-Zn-Mo Ionic Activators for Hydrogen Evolution in Alkaline Electrolysis. in Materials, 16(15), 5268.
https://doi.org/10.3390/ma16155268

Perović I, Marčeta Kaninski M, Tasić G, Maslovara SL, Laušević P, Seović M, Nikolić V. Enhanced Catalytic Activity and Energy Savings with Ni-Zn-Mo Ionic Activators for Hydrogen Evolution in Alkaline Electrolysis. in Materials. 2023;16(15):5268.
doi:10.3390/ma16155268 .

Perović, Ivana, Marčeta Kaninski, Milica, Tasić, Gvozden, Maslovara, Slađana Lj., Laušević, Petar, Seović, Mina, Nikolić, Vladimir, "Enhanced Catalytic Activity and Energy Savings with Ni-Zn-Mo Ionic Activators for Hydrogen Evolution in Alkaline Electrolysis" in Materials, 16, no. 15 (2023):5268,
https://doi.org/10.3390/ma16155268 . .

TY  - JOUR
AU  - Panić, Vesna V.
AU  - Šešlija, Sanja
AU  - Popović, Ivanka G.
AU  - Spasojević, Vuk D.
AU  - Popović, Aleksandar R.
AU  - Nikolić, Vladimir B.
AU  - Spasojević, Pavle M.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1873
AB  - For the preparation of fully biobased unsaturated polyester resins (UPRs), the replacement of styrene with alternate nonpetroleum-based monomers turned out to be one of the most challenging tasks. Its complexity lies in the fact that reactive diluents (RD) have to have low viscosity and volatility, good compatibility with prepolymer, and capability to homopolymerize and copolymerize with its unsaturations. In this context, we directed our efforts to develop fully biobased UPRs using the dialkyl itaconates as an alternative to styrene. Therefore, a series of 100% biobased UPRs were prepared from itaconic acid and 1,2-propandiol and diluted by dialkyl itaconates. The resins were characterized by Fourier transform infrared spectroscopy, NMR, volatility, and viscosity measurements, while the cured samples were characterized by dynamic mechanical properties, thermomechanical analysis, thermogravimetric analysis data, and tensile tests. The influence of RD structure on the properties of cured samples was discussed in detail. It was shown that the prepared resins had evaporation rates of dialkyl itaconates of several orders of magnitude less compared to styrene. The cured resins with dimethyl itaconate showed comparable or even better thermal and mechanical properties compared to the one with styrene. This investigation showed that itaconic acid and dialkyl itaconates are promising bioresources for the preparation of fully biobased UPRs for mass consumption.
T2  - Biomacromolecules
T1  - Simple One-Pot Synthesis of Fully Biobased Unsaturated Polyester Resins Based on Itaconic Acid
VL  - 18
IS  - 12
SP  - 3881
EP  - 3891
DO  - 10.1021/acs.biomac.7b00840
ER  - 

@article{
author = "Panić, Vesna V. and Šešlija, Sanja and Popović, Ivanka G. and Spasojević, Vuk D. and Popović, Aleksandar R. and Nikolić, Vladimir B. and Spasojević, Pavle M.",
year = "2017",
abstract = "For the preparation of fully biobased unsaturated polyester resins (UPRs), the replacement of styrene with alternate nonpetroleum-based monomers turned out to be one of the most challenging tasks. Its complexity lies in the fact that reactive diluents (RD) have to have low viscosity and volatility, good compatibility with prepolymer, and capability to homopolymerize and copolymerize with its unsaturations. In this context, we directed our efforts to develop fully biobased UPRs using the dialkyl itaconates as an alternative to styrene. Therefore, a series of 100% biobased UPRs were prepared from itaconic acid and 1,2-propandiol and diluted by dialkyl itaconates. The resins were characterized by Fourier transform infrared spectroscopy, NMR, volatility, and viscosity measurements, while the cured samples were characterized by dynamic mechanical properties, thermomechanical analysis, thermogravimetric analysis data, and tensile tests. The influence of RD structure on the properties of cured samples was discussed in detail. It was shown that the prepared resins had evaporation rates of dialkyl itaconates of several orders of magnitude less compared to styrene. The cured resins with dimethyl itaconate showed comparable or even better thermal and mechanical properties compared to the one with styrene. This investigation showed that itaconic acid and dialkyl itaconates are promising bioresources for the preparation of fully biobased UPRs for mass consumption.",
journal = "Biomacromolecules",
title = "Simple One-Pot Synthesis of Fully Biobased Unsaturated Polyester Resins Based on Itaconic Acid",
volume = "18",
number = "12",
pages = "3881-3891",
doi = "10.1021/acs.biomac.7b00840"
}

Panić, V. V., Šešlija, S., Popović, I. G., Spasojević, V. D., Popović, A. R., Nikolić, V. B.,& Spasojević, P. M.. (2017). Simple One-Pot Synthesis of Fully Biobased Unsaturated Polyester Resins Based on Itaconic Acid. in Biomacromolecules, 18(12), 3881-3891.
https://doi.org/10.1021/acs.biomac.7b00840

Panić VV, Šešlija S, Popović IG, Spasojević VD, Popović AR, Nikolić VB, Spasojević PM. Simple One-Pot Synthesis of Fully Biobased Unsaturated Polyester Resins Based on Itaconic Acid. in Biomacromolecules. 2017;18(12):3881-3891.
doi:10.1021/acs.biomac.7b00840 .

Panić, Vesna V., Šešlija, Sanja, Popović, Ivanka G., Spasojević, Vuk D., Popović, Aleksandar R., Nikolić, Vladimir B., Spasojević, Pavle M., "Simple One-Pot Synthesis of Fully Biobased Unsaturated Polyester Resins Based on Itaconic Acid" in Biomacromolecules, 18, no. 12 (2017):3881-3891,
https://doi.org/10.1021/acs.biomac.7b00840 . .

TY  - CONF
AU  - Šaponjić, Aleksandra
AU  - Kokunešoski, Maja
AU  - Perović, Ivana
AU  - Vuković, Marina
AU  - Šaponjić, Đorđe
AU  - Nikolić, Vladimir
AU  - Marčeta Kaninski, Milica
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11301
AB  - Co/Mo carbides were prepared by co-impregnation with aqueous solution of metal salts and sucrose into ordered mesoporous SBA-15 silica template using carbothermal hydrogen reduction. The obtained samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDS) . Electrochemical characterization of obtained materials was performed by cyclic voltammetry in acide solution. Bimetallic CoMo carbide obtained by using carbothermal hydrogen reduction of Co Mo precursors is formed when the Co/Mo molar ratio is 1.0.
PB  - University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia
C3  - 6th International Symposium Mining and Enviromental Protection Proceedings
T1  - Co/Mo bimetallic carbides with potential applications as catalyst support in pem fuel cells - synthesis and characterization
SP  - 375
EP  - 380
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11301
ER  - 

@conference{
author = "Šaponjić, Aleksandra and Kokunešoski, Maja and Perović, Ivana and Vuković, Marina and Šaponjić, Đorđe and Nikolić, Vladimir and Marčeta Kaninski, Milica",
year = "2017",
abstract = "Co/Mo carbides were prepared by co-impregnation with aqueous solution of metal salts and sucrose into ordered mesoporous SBA-15 silica template using carbothermal hydrogen reduction. The obtained samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDS) . Electrochemical characterization of obtained materials was performed by cyclic voltammetry in acide solution. Bimetallic CoMo carbide obtained by using carbothermal hydrogen reduction of Co Mo precursors is formed when the Co/Mo molar ratio is 1.0.",
publisher = "University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia",
journal = "6th International Symposium Mining and Enviromental Protection Proceedings",
title = "Co/Mo bimetallic carbides with potential applications as catalyst support in pem fuel cells - synthesis and characterization",
pages = "375-380",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11301"
}

Šaponjić, A., Kokunešoski, M., Perović, I., Vuković, M., Šaponjić, Đ., Nikolić, V.,& Marčeta Kaninski, M.. (2017). Co/Mo bimetallic carbides with potential applications as catalyst support in pem fuel cells - synthesis and characterization. in 6th International Symposium Mining and Enviromental Protection Proceedings
University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia., 375-380.
https://hdl.handle.net/21.15107/rcub_vinar_11301

Šaponjić A, Kokunešoski M, Perović I, Vuković M, Šaponjić Đ, Nikolić V, Marčeta Kaninski M. Co/Mo bimetallic carbides with potential applications as catalyst support in pem fuel cells - synthesis and characterization. in 6th International Symposium Mining and Enviromental Protection Proceedings. 2017;:375-380.
https://hdl.handle.net/21.15107/rcub_vinar_11301 .

Šaponjić, Aleksandra, Kokunešoski, Maja, Perović, Ivana, Vuković, Marina, Šaponjić, Đorđe, Nikolić, Vladimir, Marčeta Kaninski, Milica, "Co/Mo bimetallic carbides with potential applications as catalyst support in pem fuel cells - synthesis and characterization" in 6th International Symposium Mining and Enviromental Protection Proceedings (2017):375-380,
https://hdl.handle.net/21.15107/rcub_vinar_11301 .