Nikolić, Vladimir M.

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Authority KeyName Variants
orcid::0000-0002-3479-473X
  • Nikolić, Vladimir M. (39)
  • Nikolić, Vladimir (3)
Projects
Hydrogen Energy - Research and Development of New Materials: Electrolytic Hydrogen Production, Hydrogen Fuel Cells, Isotope Effects Lithium-ion batteries and fuel cells - research and development
Vodonična energija dobijanje vodonika – gorivne ćelije – izotopski efekti Efficient use of resources in energy converting applications
Ministry of Education, Science and Technological Development of the Republic of Serbia COST Action [CA1712]
The study of physicochemical and biochemical processes in living environment that have impacts on pollution and the investigation of possibilities for minimizing the consequences Effects of laser radiation and plasma on novel materials in their synthesis, modification, and analysis
Rational design and synthesis of biologically active and coordination compounds and functional materials, relevant for (bio)nanotechnology Electroconducting and redox-active polymers and oligomers: synthesis, structure, properties and applications
Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200017 (University of Belgrade, Institute of Nuclear Sciences 'Vinča', Belgrade-Vinča) Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200051 (Institute of General and Physical Chemistry, Belgrade)
Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine Research and verification of the multidisciplinary forensic methods in
NATO Science for Peace and Security Programme [Grant G5729 (I.A.P.)] Serbian Academy of Sciences and Arts through the project Electrocatalysis in the contemporary processes of energy conversion

Author's Bibliography

Structural and Functional Picosecond Laser Modification of the Nimonic 263 Superalloy in Different Environmental Conditions and Optimization of the Irradiation Process

Rajčić, Boris; Šibalija, Tatjana; Nikolić, Vladimir M.; Čekada, Miha; Savović, Jelena; Petronić, Sanja; Milovanović, Dubravka

(2023)

TY  - JOUR
AU  - Rajčić, Boris
AU  - Šibalija, Tatjana
AU  - Nikolić, Vladimir M.
AU  - Čekada, Miha
AU  - Savović, Jelena
AU  - Petronić, Sanja
AU  - Milovanović, Dubravka
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10659
AB  - In this experimental study, picosecond laser treatment was performed on a nickel-based superalloy Nimonic 263, aiming to investigate the surface effects induced by irradiation in different atmospheric conditions and, concerning changes in surface composition, regarding the possibility for improvement of its functionality. Besides the varying laser parameters, such as a number of pulses and pulse energy, environmental conditions are also varied. All surface modifications were carried out in standard laboratory conditions and a nitrogen- and argon-rich atmosphere. The resulting topography effects depend on the specific laser treatment and could be categorized as increased roughness, crater formation, and formation of the laser-induced periodic surface structures (LIPSS). Changes in the chemical surface composition are distinguished as the potential formation of the protective oxides/nitrides on the sample surface. Numerous characterization techniques analyse the resulting effects on the topography and surface parameters. The multi-response parametric optimization of the picosecond laser process was performed using an advanced statistical method based on Taguchi’s robust parameter design. Finally, the optimal parameter conditions for Nimonic 263 modification are suggested.
T2  - Materials
T1  - Structural and Functional Picosecond Laser Modification of the Nimonic 263 Superalloy in Different Environmental Conditions and Optimization of the Irradiation Process
VL  - 16
IS  - 3
SP  - 1021
DO  - 10.3390/ma16031021
ER  - 
@article{
author = "Rajčić, Boris and Šibalija, Tatjana and Nikolić, Vladimir M. and Čekada, Miha and Savović, Jelena and Petronić, Sanja and Milovanović, Dubravka",
year = "2023",
abstract = "In this experimental study, picosecond laser treatment was performed on a nickel-based superalloy Nimonic 263, aiming to investigate the surface effects induced by irradiation in different atmospheric conditions and, concerning changes in surface composition, regarding the possibility for improvement of its functionality. Besides the varying laser parameters, such as a number of pulses and pulse energy, environmental conditions are also varied. All surface modifications were carried out in standard laboratory conditions and a nitrogen- and argon-rich atmosphere. The resulting topography effects depend on the specific laser treatment and could be categorized as increased roughness, crater formation, and formation of the laser-induced periodic surface structures (LIPSS). Changes in the chemical surface composition are distinguished as the potential formation of the protective oxides/nitrides on the sample surface. Numerous characterization techniques analyse the resulting effects on the topography and surface parameters. The multi-response parametric optimization of the picosecond laser process was performed using an advanced statistical method based on Taguchi’s robust parameter design. Finally, the optimal parameter conditions for Nimonic 263 modification are suggested.",
journal = "Materials",
title = "Structural and Functional Picosecond Laser Modification of the Nimonic 263 Superalloy in Different Environmental Conditions and Optimization of the Irradiation Process",
volume = "16",
number = "3",
pages = "1021",
doi = "10.3390/ma16031021"
}
Rajčić, B., Šibalija, T., Nikolić, V. M., Čekada, M., Savović, J., Petronić, S.,& Milovanović, D.. (2023). Structural and Functional Picosecond Laser Modification of the Nimonic 263 Superalloy in Different Environmental Conditions and Optimization of the Irradiation Process. in Materials, 16(3), 1021.
https://doi.org/10.3390/ma16031021
Rajčić B, Šibalija T, Nikolić VM, Čekada M, Savović J, Petronić S, Milovanović D. Structural and Functional Picosecond Laser Modification of the Nimonic 263 Superalloy in Different Environmental Conditions and Optimization of the Irradiation Process. in Materials. 2023;16(3):1021.
doi:10.3390/ma16031021 .
Rajčić, Boris, Šibalija, Tatjana, Nikolić, Vladimir M., Čekada, Miha, Savović, Jelena, Petronić, Sanja, Milovanović, Dubravka, "Structural and Functional Picosecond Laser Modification of the Nimonic 263 Superalloy in Different Environmental Conditions and Optimization of the Irradiation Process" in Materials, 16, no. 3 (2023):1021,
https://doi.org/10.3390/ma16031021 . .
2
1

Possibilities of integrating alkaline electrolyzer with ionic activators in micro combined heat and power systems

Maslovara, Slađana; Vasić Anićijević, Dragana; Nikolić, Vladimir; Kijevčanin, Mirjana; Marčeta, Milica

(Belgrade : Serbian Ceramic Society, 2023)

TY  - CONF
AU  - Maslovara, Slađana
AU  - Vasić Anićijević, Dragana
AU  - Nikolić, Vladimir
AU  - Kijevčanin, Mirjana
AU  - Marčeta, Milica
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11635
AB  - The utilization of renewable energy sources such as wind and solar increases the available options for a decentralized electricity grid. Water electrolysis is among the most perspective methods of technical development. Cost reduction in electrolyzers is possible only through the development of electrocatalysts and cathode materials. The primary outcomes of the research were the characterization and testing of ionic activators added in a standard solution of 6M KOH in alkaline electrolyzers and integrated into combined heat and power systems. We found that ionic activators based on d-metals such as Ni, Cu, Co or Cr and Mo salt in a standard solution of 6M KOH improve the reduction in energy consumption by about 18%, compared to a non-activated system. The energy efficiencies of the electrolyzer with an activated system were about 70% on the different applied current densities. Increasing the energy efficiency of the electrolytic process is achieved by thermal integration, that is, by connecting the heat exchanger with the electrolyzer and the fuel cell. By establishing the connection of the heat exchanger with the alkaline electrolyzer with ionic activators and the fuel cell, it is possible to increase energy efficiency by thermal integration of the electrolytic process.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
T1  - Possibilities of integrating alkaline electrolyzer with ionic activators in micro combined heat and power systems
SP  - 47
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11635
ER  - 
@conference{
author = "Maslovara, Slađana and Vasić Anićijević, Dragana and Nikolić, Vladimir and Kijevčanin, Mirjana and Marčeta, Milica",
year = "2023",
abstract = "The utilization of renewable energy sources such as wind and solar increases the available options for a decentralized electricity grid. Water electrolysis is among the most perspective methods of technical development. Cost reduction in electrolyzers is possible only through the development of electrocatalysts and cathode materials. The primary outcomes of the research were the characterization and testing of ionic activators added in a standard solution of 6M KOH in alkaline electrolyzers and integrated into combined heat and power systems. We found that ionic activators based on d-metals such as Ni, Cu, Co or Cr and Mo salt in a standard solution of 6M KOH improve the reduction in energy consumption by about 18%, compared to a non-activated system. The energy efficiencies of the electrolyzer with an activated system were about 70% on the different applied current densities. Increasing the energy efficiency of the electrolytic process is achieved by thermal integration, that is, by connecting the heat exchanger with the electrolyzer and the fuel cell. By establishing the connection of the heat exchanger with the alkaline electrolyzer with ionic activators and the fuel cell, it is possible to increase energy efficiency by thermal integration of the electrolytic process.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade",
title = "Possibilities of integrating alkaline electrolyzer with ionic activators in micro combined heat and power systems",
pages = "47",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11635"
}
Maslovara, S., Vasić Anićijević, D., Nikolić, V., Kijevčanin, M.,& Marčeta, M.. (2023). Possibilities of integrating alkaline electrolyzer with ionic activators in micro combined heat and power systems. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
Belgrade : Serbian Ceramic Society., 47.
https://hdl.handle.net/21.15107/rcub_vinar_11635
Maslovara S, Vasić Anićijević D, Nikolić V, Kijevčanin M, Marčeta M. Possibilities of integrating alkaline electrolyzer with ionic activators in micro combined heat and power systems. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade. 2023;:47.
https://hdl.handle.net/21.15107/rcub_vinar_11635 .
Maslovara, Slađana, Vasić Anićijević, Dragana, Nikolić, Vladimir, Kijevčanin, Mirjana, Marčeta, Milica, "Possibilities of integrating alkaline electrolyzer with ionic activators in micro combined heat and power systems" in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade (2023):47,
https://hdl.handle.net/21.15107/rcub_vinar_11635 .

Investigation of tungsten-carbide-oxideas the anode catalysts supports for the proton exchange membrane fuel cells

Brković, Snežana; Marčeta Kaninski, Milica; Perović, Ivana; Maslovara, Slađana; Zdolšek, Nikola; Laušević, Petar; Nikolić, Vladimir

(Belgrade : Serbian Ceramic Society, 2023)

TY  - CONF
AU  - Brković, Snežana
AU  - Marčeta Kaninski, Milica
AU  - Perović, Ivana
AU  - Maslovara, Slađana
AU  - Zdolšek, Nikola
AU  - Laušević, Petar
AU  - Nikolić, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11636
AB  - A significant research efforts are directed towards the development of compact energy supply devices, so-called stacks of fuel cells, which might be located near or at the point of energy consumption. For widespread use, the most practical are fuel cells with proton exchange membrane, which produce clean electricity, heat and water, at low temperatures. The price of the catalyst limits the mass production and large-scale utilization of fuel cells. Within our research, non-stoichiometric tungsten-carbide-oxide (WxCyOz) were developed as support for catalysts based on PtRu for PEM fuel cells. The conductivity, morphology and structure of the synthesized catalysts were investigated. Cyclic voltammetry, linear scan voltammetry and rotating disk electrode voltammetry were used to determine performance of obtained PtRu/WxCyOz catalysts. Special attention was given to the analysis of CO poisoning. The catalyst with the best performance (30% PtRu/WxCyOz) has higher number of active sites for HOR and the highest interfacial region which contributes the improved CO tolerance, in relation to the other tested catalysts. By testing this catalyst as an anode catalyst in a single PEM fuel cell, a significantly lower power drop was obtained (16,3%) compared to a single fuel cell that uses commercial catalysts (35,3%). These results highlight the potential of PtRu/WxCyOz catalysts in mitigating performance degradation caused by CO poisoning in PEM fuel cells.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
T1  - Investigation of tungsten-carbide-oxideas the anode catalysts supports for the proton exchange membrane fuel cells
SP  - 48
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11636
ER  - 
@conference{
author = "Brković, Snežana and Marčeta Kaninski, Milica and Perović, Ivana and Maslovara, Slađana and Zdolšek, Nikola and Laušević, Petar and Nikolić, Vladimir",
year = "2023",
abstract = "A significant research efforts are directed towards the development of compact energy supply devices, so-called stacks of fuel cells, which might be located near or at the point of energy consumption. For widespread use, the most practical are fuel cells with proton exchange membrane, which produce clean electricity, heat and water, at low temperatures. The price of the catalyst limits the mass production and large-scale utilization of fuel cells. Within our research, non-stoichiometric tungsten-carbide-oxide (WxCyOz) were developed as support for catalysts based on PtRu for PEM fuel cells. The conductivity, morphology and structure of the synthesized catalysts were investigated. Cyclic voltammetry, linear scan voltammetry and rotating disk electrode voltammetry were used to determine performance of obtained PtRu/WxCyOz catalysts. Special attention was given to the analysis of CO poisoning. The catalyst with the best performance (30% PtRu/WxCyOz) has higher number of active sites for HOR and the highest interfacial region which contributes the improved CO tolerance, in relation to the other tested catalysts. By testing this catalyst as an anode catalyst in a single PEM fuel cell, a significantly lower power drop was obtained (16,3%) compared to a single fuel cell that uses commercial catalysts (35,3%). These results highlight the potential of PtRu/WxCyOz catalysts in mitigating performance degradation caused by CO poisoning in PEM fuel cells.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade",
title = "Investigation of tungsten-carbide-oxideas the anode catalysts supports for the proton exchange membrane fuel cells",
pages = "48",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11636"
}
Brković, S., Marčeta Kaninski, M., Perović, I., Maslovara, S., Zdolšek, N., Laušević, P.,& Nikolić, V.. (2023). Investigation of tungsten-carbide-oxideas the anode catalysts supports for the proton exchange membrane fuel cells. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
Belgrade : Serbian Ceramic Society., 48.
https://hdl.handle.net/21.15107/rcub_vinar_11636
Brković S, Marčeta Kaninski M, Perović I, Maslovara S, Zdolšek N, Laušević P, Nikolić V. Investigation of tungsten-carbide-oxideas the anode catalysts supports for the proton exchange membrane fuel cells. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade. 2023;:48.
https://hdl.handle.net/21.15107/rcub_vinar_11636 .
Brković, Snežana, Marčeta Kaninski, Milica, Perović, Ivana, Maslovara, Slađana, Zdolšek, Nikola, Laušević, Petar, Nikolić, Vladimir, "Investigation of tungsten-carbide-oxideas the anode catalysts supports for the proton exchange membrane fuel cells" in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade (2023):48,
https://hdl.handle.net/21.15107/rcub_vinar_11636 .

Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance

Brković, Snežana M.; Marčeta Kaninski, Milica; Laušević, Petar; Šaponjić, Aleksandra; Radulović, Aleksandra; Rakić, Aleksandra A.; Pašti, Igor A.; Nikolić, Vladimir M.

(2020)

TY  - JOUR
AU  - Brković, Snežana M.
AU  - Marčeta Kaninski, Milica
AU  - Laušević, Petar
AU  - Šaponjić, Aleksandra
AU  - Radulović, Aleksandra
AU  - Rakić, Aleksandra A.
AU  - Pašti, Igor A.
AU  - Nikolić, Vladimir M.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8927
AB  - Durability and cost of Proton Exchange Membrane fuel cells (PEMFCs) are two major factors delaying their commercialization. Cost is associated with the price of the catalysts, while durability is associated with degradation and poisoning of the catalysts, primarily by CO. This motivated us to develop tungsten-carbide-oxide (WxCyOz) as a new non-carbon based catalyst support for Pt–Ru–based anode PEMFC catalyst. The aim was to improve performance and obtain higher CO tolerance compared to commercial catalysts. The performance of obtained PtRu/WxCyOz catalysts was investigated using cyclic voltammetry, linear scan voltammetry and rotating disk electrode voltammetry. Particular attention was given to the analysis of CO poisoning, to better understand how WxCyOz species can contribute to the CO tolerance of PtRu/WxCyOz. Improved oxidation of COads at low potentials (E < 0.5 V vs. RHE) was ascribed to OH provided by the oxide phase at the interfacial region between the support and the PtRu particles. On the other hand, at high potentials (E > 0.5 V vs. RHE) CO removal proceeds dominantly via OH provided from the oxidized metal sites. The obtained catalyst with the best performance (30% PtRu/WxCyOz) was tested as an anode catalyst in PEM fuel cell. When using synthetic reformate as a fuel in PEMFC, there is a significant power drop of 35.3 % for the commercial 30% PtRu/C catalyst, while for the PtRu/WxCyOz anode catalyst this drop is around 16 %.
T2  - International Journal of Hydrogen Energy
T1  - Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance
VL  - 45
IS  - 27
SP  - 13929
EP  - 13938
DO  - 10.1016/j.ijhydene.2020.03.086
ER  - 
@article{
author = "Brković, Snežana M. and Marčeta Kaninski, Milica and Laušević, Petar and Šaponjić, Aleksandra and Radulović, Aleksandra and Rakić, Aleksandra A. and Pašti, Igor A. and Nikolić, Vladimir M.",
year = "2020",
abstract = "Durability and cost of Proton Exchange Membrane fuel cells (PEMFCs) are two major factors delaying their commercialization. Cost is associated with the price of the catalysts, while durability is associated with degradation and poisoning of the catalysts, primarily by CO. This motivated us to develop tungsten-carbide-oxide (WxCyOz) as a new non-carbon based catalyst support for Pt–Ru–based anode PEMFC catalyst. The aim was to improve performance and obtain higher CO tolerance compared to commercial catalysts. The performance of obtained PtRu/WxCyOz catalysts was investigated using cyclic voltammetry, linear scan voltammetry and rotating disk electrode voltammetry. Particular attention was given to the analysis of CO poisoning, to better understand how WxCyOz species can contribute to the CO tolerance of PtRu/WxCyOz. Improved oxidation of COads at low potentials (E < 0.5 V vs. RHE) was ascribed to OH provided by the oxide phase at the interfacial region between the support and the PtRu particles. On the other hand, at high potentials (E > 0.5 V vs. RHE) CO removal proceeds dominantly via OH provided from the oxidized metal sites. The obtained catalyst with the best performance (30% PtRu/WxCyOz) was tested as an anode catalyst in PEM fuel cell. When using synthetic reformate as a fuel in PEMFC, there is a significant power drop of 35.3 % for the commercial 30% PtRu/C catalyst, while for the PtRu/WxCyOz anode catalyst this drop is around 16 %.",
journal = "International Journal of Hydrogen Energy",
title = "Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance",
volume = "45",
number = "27",
pages = "13929-13938",
doi = "10.1016/j.ijhydene.2020.03.086"
}
Brković, S. M., Marčeta Kaninski, M., Laušević, P., Šaponjić, A., Radulović, A., Rakić, A. A., Pašti, I. A.,& Nikolić, V. M.. (2020). Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance. in International Journal of Hydrogen Energy, 45(27), 13929-13938.
https://doi.org/10.1016/j.ijhydene.2020.03.086
Brković SM, Marčeta Kaninski M, Laušević P, Šaponjić A, Radulović A, Rakić AA, Pašti IA, Nikolić VM. Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance. in International Journal of Hydrogen Energy. 2020;45(27):13929-13938.
doi:10.1016/j.ijhydene.2020.03.086 .
Brković, Snežana M., Marčeta Kaninski, Milica, Laušević, Petar, Šaponjić, Aleksandra, Radulović, Aleksandra, Rakić, Aleksandra A., Pašti, Igor A., Nikolić, Vladimir M., "Non-stoichiometric tungsten-carbide-oxide-supported Pt–Ru anode catalysts for PEM fuel cells – From basic electrochemistry to fuel cell performance" in International Journal of Hydrogen Energy, 45, no. 27 (2020):13929-13938,
https://doi.org/10.1016/j.ijhydene.2020.03.086 . .
16
6
14

Pt/C catalyst impregnated with tungsten-oxide – Hydrogen oxidation reaction vs. CO tolerance

Brković, Snežana M.; Nikolić, Vladimir M.; Marčeta Kaninski, Milica; Pašti, Igor A.

(2019)

TY  - JOUR
AU  - Brković, Snežana M.
AU  - Nikolić, Vladimir M.
AU  - Marčeta Kaninski, Milica
AU  - Pašti, Igor A.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0360319919313576
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8150
AB  - Hydrogen Oxidation Reaction (HOR) is anode reaction in Proton exchange membrane fuel cells (PEMFCs) and it has very fast kinetics. However, the purity of fuel (H 2 ) is very important and can slow down HOR kinetics, affecting the overall PEMFC performance. The performance of commercial Pt/C catalyst impregnated with WO x, as a catalyst for HOR, was investigated using a set of electrochemical methods (cyclic voltammetry, linear scan voltammetry and rotating disk electrode voltammetry). In order to deepen the understanding how WO x species can contribute CO tolerance of Pt/C, a particular attention was paid to CO poisoning. In the absence of CO, HOR is under diffusion limitations and HOR kinetics is not affected by WO x species. Appreciable HOR current on the electrodes pre-saturated with CO ads at potentials above 0.3 V vs. RHE, which is not observed for pure Pt/C, was discussed in details. HOR liming diffusion currents for higher concentrations of W are reached at high anodic potentials. The obtained results were explained by donation of OH ads by WO x phase for CO ads removal in the mid potential region and reduced reactivity of Pt surface sites in the vicinity of the Pt|WO x interface. The obtained results can provide guidelines for development of novel CO tolerant PEMFC anode catalysts. © 2019 Hydrogen Energy Publications LLC
T2  - International Journal of Hydrogen Energy
T1  - Pt/C catalyst impregnated with tungsten-oxide – Hydrogen oxidation reaction vs. CO tolerance
VL  - 44
IS  - 26
SP  - 13364
EP  - 13372
DO  - 10.1016/j.ijhydene.2019.03.270
ER  - 
@article{
author = "Brković, Snežana M. and Nikolić, Vladimir M. and Marčeta Kaninski, Milica and Pašti, Igor A.",
year = "2019",
abstract = "Hydrogen Oxidation Reaction (HOR) is anode reaction in Proton exchange membrane fuel cells (PEMFCs) and it has very fast kinetics. However, the purity of fuel (H 2 ) is very important and can slow down HOR kinetics, affecting the overall PEMFC performance. The performance of commercial Pt/C catalyst impregnated with WO x, as a catalyst for HOR, was investigated using a set of electrochemical methods (cyclic voltammetry, linear scan voltammetry and rotating disk electrode voltammetry). In order to deepen the understanding how WO x species can contribute CO tolerance of Pt/C, a particular attention was paid to CO poisoning. In the absence of CO, HOR is under diffusion limitations and HOR kinetics is not affected by WO x species. Appreciable HOR current on the electrodes pre-saturated with CO ads at potentials above 0.3 V vs. RHE, which is not observed for pure Pt/C, was discussed in details. HOR liming diffusion currents for higher concentrations of W are reached at high anodic potentials. The obtained results were explained by donation of OH ads by WO x phase for CO ads removal in the mid potential region and reduced reactivity of Pt surface sites in the vicinity of the Pt|WO x interface. The obtained results can provide guidelines for development of novel CO tolerant PEMFC anode catalysts. © 2019 Hydrogen Energy Publications LLC",
journal = "International Journal of Hydrogen Energy",
title = "Pt/C catalyst impregnated with tungsten-oxide – Hydrogen oxidation reaction vs. CO tolerance",
volume = "44",
number = "26",
pages = "13364-13372",
doi = "10.1016/j.ijhydene.2019.03.270"
}
Brković, S. M., Nikolić, V. M., Marčeta Kaninski, M.,& Pašti, I. A.. (2019). Pt/C catalyst impregnated with tungsten-oxide – Hydrogen oxidation reaction vs. CO tolerance. in International Journal of Hydrogen Energy, 44(26), 13364-13372.
https://doi.org/10.1016/j.ijhydene.2019.03.270
Brković SM, Nikolić VM, Marčeta Kaninski M, Pašti IA. Pt/C catalyst impregnated with tungsten-oxide – Hydrogen oxidation reaction vs. CO tolerance. in International Journal of Hydrogen Energy. 2019;44(26):13364-13372.
doi:10.1016/j.ijhydene.2019.03.270 .
Brković, Snežana M., Nikolić, Vladimir M., Marčeta Kaninski, Milica, Pašti, Igor A., "Pt/C catalyst impregnated with tungsten-oxide – Hydrogen oxidation reaction vs. CO tolerance" in International Journal of Hydrogen Energy, 44, no. 26 (2019):13364-13372,
https://doi.org/10.1016/j.ijhydene.2019.03.270 . .
18
12
19

Synthesis and characterization of Co-Mo bimetallic carbides

Šaponjić, Aleksandra; Šaponjić, Đorđe; Perović, Ivana M.; Vuković, Marina; Nikolić, Vladimir M.; Marčeta Kaninski, Milica; Kokunešoski, Maja

(2019)

TY  - JOUR
AU  - Šaponjić, Aleksandra
AU  - Šaponjić, Đorđe
AU  - Perović, Ivana M.
AU  - Vuković, Marina
AU  - Nikolić, Vladimir M.
AU  - Marčeta Kaninski, Milica
AU  - Kokunešoski, Maja
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8598
AB  - Co-Mo carbides were prepared by impregnation with aqueous solution of metal salts and sucrose into ordered mesoporous SBA-15 silica template using carbothermal hydrogen reduction. Bimetallic Co-Mo carbide obtained by using carbothermal hydrogen reduction of Co-Mo precursors is formed when the Co-Mo molar ratio is 1.0. The obtained samples were characterized by X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis. Electrochemical characterization of obtained materials wеre performed by cyclic voltammetry in acid solution.
T2  - Science of Sintering
T1  - Synthesis and characterization of Co-Mo bimetallic carbides
VL  - 51
IS  - 3
SP  - 319
EP  - 326
DO  - 10.2298/SOS1903319S
ER  - 
@article{
author = "Šaponjić, Aleksandra and Šaponjić, Đorđe and Perović, Ivana M. and Vuković, Marina and Nikolić, Vladimir M. and Marčeta Kaninski, Milica and Kokunešoski, Maja",
year = "2019",
abstract = "Co-Mo carbides were prepared by impregnation with aqueous solution of metal salts and sucrose into ordered mesoporous SBA-15 silica template using carbothermal hydrogen reduction. Bimetallic Co-Mo carbide obtained by using carbothermal hydrogen reduction of Co-Mo precursors is formed when the Co-Mo molar ratio is 1.0. The obtained samples were characterized by X-ray diffraction, scanning electron microscopy and energy dispersive X-ray analysis. Electrochemical characterization of obtained materials wеre performed by cyclic voltammetry in acid solution.",
journal = "Science of Sintering",
title = "Synthesis and characterization of Co-Mo bimetallic carbides",
volume = "51",
number = "3",
pages = "319-326",
doi = "10.2298/SOS1903319S"
}
Šaponjić, A., Šaponjić, Đ., Perović, I. M., Vuković, M., Nikolić, V. M., Marčeta Kaninski, M.,& Kokunešoski, M.. (2019). Synthesis and characterization of Co-Mo bimetallic carbides. in Science of Sintering, 51(3), 319-326.
https://doi.org/10.2298/SOS1903319S
Šaponjić A, Šaponjić Đ, Perović IM, Vuković M, Nikolić VM, Marčeta Kaninski M, Kokunešoski M. Synthesis and characterization of Co-Mo bimetallic carbides. in Science of Sintering. 2019;51(3):319-326.
doi:10.2298/SOS1903319S .
Šaponjić, Aleksandra, Šaponjić, Đorđe, Perović, Ivana M., Vuković, Marina, Nikolić, Vladimir M., Marčeta Kaninski, Milica, Kokunešoski, Maja, "Synthesis and characterization of Co-Mo bimetallic carbides" in Science of Sintering, 51, no. 3 (2019):319-326,
https://doi.org/10.2298/SOS1903319S . .
2
2
2

Određivanja sadržaja BTEX jedinjenja u uzorcima građevinskog materijala i otpada sa mineralnim uljima kao glavnom komponentom, metodom GC/FID Headspace

Tošić, Miloš; Nikolić, Željka; Georgijević, Jelena M.; Brdarić, Tanja; Tasić, Gvozden; Nikolić, Vladimir; Milovanović, Dubravka; Marčeta Kaninski, Milica

(Belgrade : Serbian Chemical Society, 2018)

TY  - CONF
AU  - Tošić, Miloš
AU  - Nikolić, Željka
AU  - Georgijević, Jelena M.
AU  - Brdarić, Tanja
AU  - Tasić, Gvozden
AU  - Nikolić, Vladimir
AU  - Milovanović, Dubravka
AU  - Marčeta Kaninski, Milica
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12695
AB  - BTEX jedinjenja su lako isparlјiva aromatična jedinjenja, klasifikovana kao toksična jedinjenja i kao takva su opasna po zdravlje ljudii životnu sredinu. Predmet istraživanja u ovom radu su BTEX jedinjenja u uzorcima građevinskog materijala sa mineralnim uljima kao glavnom komponentom. S obzirom da su ona sastavni deo mineralnih ulja, važno je odrediti njihovo prisustvo, koncentraciju i dalju distribuciju u životnu sredinu. Tokom eksperimentalnog istraživanja, ispitivan je sadržaj BTEX jedinjenja: benzen, toluen, ksilen (o, p, m) i etilbenzen u uzorcima mineralnih ulja iz građevinskih materijala i otpada. Metoda za određivanje ovih jedinjenja, kao i za njihovu kvantifikaciju u uzorcima mineralnih ulja, razvijena je u Laboratoriji za fizičku hemiju, Instituta za nuklearne nauke „Vinča“, Univerziteta u Beogradu, modifikacijom i unapređenjem standardnih metoda[1, 2]. Za potrebe ovog istraživanja,u eksperimentalnom delu, primenom Headspace ekstrakcije sa GC-FID tehnikom, određen je kvalitativni i kvantitativni sadržaj BTEX jedinjenja, što istovremeno predstavlja i validaciju ispitivane metode, kao i određivanje njene merne nesigurnosti (Tabela 1.).Parametri za validaciju ove metode su bili: specifičnost, linearnost, granica detekcije (LOD), granica kvantifikacije (LOQ), ponovljivost i tačnost svakog jedinjenja. Primenom opisane metode postignuta je pouzdana identifikacija ispitivanih jedinjenja. Identifikacija se ostvaruje poređenjem retencionih vremena ispitivanih jedinjenja sa retencionim vremenima analitičkih standarda. FID detektor pokazuje linearan odgovor u opsegu 0,1 do 10 µg , odnosno R ≥ 0,99. Vrednosti standarda na kalibracionoj krivi su potvrdili preciznost metode. Relativna standardna devijacija RSD je ispod 5%, što dokazuje da je metoda tačna i reproduktivna [3-8]. Predstavljena metoda je validirana kao pouzdana, precizna i tačna za potrebe kontrole kvaliteta mineralnih ulja koja su korišćena ili će se koristiti u toku izgradnje građevinskih objekata, kao i za otpadni materijal.
PB  - Belgrade : Serbian Chemical Society
C3  - ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts
T1  - Određivanja sadržaja BTEX jedinjenja u uzorcima građevinskog materijala i otpada sa mineralnim uljima kao glavnom komponentom, metodom GC/FID Headspace
T1  - Determination of the BTEX compounds in building materials and waste samples containing mineral oils as the main component using Headspace GC/FID
SP  - 203
EP  - 204
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12695
ER  - 
@conference{
author = "Tošić, Miloš and Nikolić, Željka and Georgijević, Jelena M. and Brdarić, Tanja and Tasić, Gvozden and Nikolić, Vladimir and Milovanović, Dubravka and Marčeta Kaninski, Milica",
year = "2018",
abstract = "BTEX jedinjenja su lako isparlјiva aromatična jedinjenja, klasifikovana kao toksična jedinjenja i kao takva su opasna po zdravlje ljudii životnu sredinu. Predmet istraživanja u ovom radu su BTEX jedinjenja u uzorcima građevinskog materijala sa mineralnim uljima kao glavnom komponentom. S obzirom da su ona sastavni deo mineralnih ulja, važno je odrediti njihovo prisustvo, koncentraciju i dalju distribuciju u životnu sredinu. Tokom eksperimentalnog istraživanja, ispitivan je sadržaj BTEX jedinjenja: benzen, toluen, ksilen (o, p, m) i etilbenzen u uzorcima mineralnih ulja iz građevinskih materijala i otpada. Metoda za određivanje ovih jedinjenja, kao i za njihovu kvantifikaciju u uzorcima mineralnih ulja, razvijena je u Laboratoriji za fizičku hemiju, Instituta za nuklearne nauke „Vinča“, Univerziteta u Beogradu, modifikacijom i unapređenjem standardnih metoda[1, 2]. Za potrebe ovog istraživanja,u eksperimentalnom delu, primenom Headspace ekstrakcije sa GC-FID tehnikom, određen je kvalitativni i kvantitativni sadržaj BTEX jedinjenja, što istovremeno predstavlja i validaciju ispitivane metode, kao i određivanje njene merne nesigurnosti (Tabela 1.).Parametri za validaciju ove metode su bili: specifičnost, linearnost, granica detekcije (LOD), granica kvantifikacije (LOQ), ponovljivost i tačnost svakog jedinjenja. Primenom opisane metode postignuta je pouzdana identifikacija ispitivanih jedinjenja. Identifikacija se ostvaruje poređenjem retencionih vremena ispitivanih jedinjenja sa retencionim vremenima analitičkih standarda. FID detektor pokazuje linearan odgovor u opsegu 0,1 do 10 µg , odnosno R ≥ 0,99. Vrednosti standarda na kalibracionoj krivi su potvrdili preciznost metode. Relativna standardna devijacija RSD je ispod 5%, što dokazuje da je metoda tačna i reproduktivna [3-8]. Predstavljena metoda je validirana kao pouzdana, precizna i tačna za potrebe kontrole kvaliteta mineralnih ulja koja su korišćena ili će se koristiti u toku izgradnje građevinskih objekata, kao i za otpadni materijal.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts",
title = "Određivanja sadržaja BTEX jedinjenja u uzorcima građevinskog materijala i otpada sa mineralnim uljima kao glavnom komponentom, metodom GC/FID Headspace, Determination of the BTEX compounds in building materials and waste samples containing mineral oils as the main component using Headspace GC/FID",
pages = "203-204",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12695"
}
Tošić, M., Nikolić, Ž., Georgijević, J. M., Brdarić, T., Tasić, G., Nikolić, V., Milovanović, D.,& Marčeta Kaninski, M.. (2018). Određivanja sadržaja BTEX jedinjenja u uzorcima građevinskog materijala i otpada sa mineralnim uljima kao glavnom komponentom, metodom GC/FID Headspace. in ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts
Belgrade : Serbian Chemical Society., 203-204.
https://hdl.handle.net/21.15107/rcub_vinar_12695
Tošić M, Nikolić Ž, Georgijević JM, Brdarić T, Tasić G, Nikolić V, Milovanović D, Marčeta Kaninski M. Određivanja sadržaja BTEX jedinjenja u uzorcima građevinskog materijala i otpada sa mineralnim uljima kao glavnom komponentom, metodom GC/FID Headspace. in ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts. 2018;:203-204.
https://hdl.handle.net/21.15107/rcub_vinar_12695 .
Tošić, Miloš, Nikolić, Željka, Georgijević, Jelena M., Brdarić, Tanja, Tasić, Gvozden, Nikolić, Vladimir, Milovanović, Dubravka, Marčeta Kaninski, Milica, "Određivanja sadržaja BTEX jedinjenja u uzorcima građevinskog materijala i otpada sa mineralnim uljima kao glavnom komponentom, metodom GC/FID Headspace" in ENVIROCHEM 2018 : 8th Symposium Chemistry and Environmental Protection : program and the book of abstracts (2018):203-204,
https://hdl.handle.net/21.15107/rcub_vinar_12695 .

Validation and uncertainty estimation of UPLC-PDA method for the analysis of polycyclic aromatic hydrocarbons in concrete

Aćimović, Danka D.; Nikolić, Željka; Tošić, Miloš S.; Milovanović, Dubravka S.; Nikolić, Vladimir M.; Brdarić, Tanja; Marčeta Kaninski, Milica

(2017)

TY  - JOUR
AU  - Aćimović, Danka D.
AU  - Nikolić, Željka
AU  - Tošić, Miloš S.
AU  - Milovanović, Dubravka S.
AU  - Nikolić, Vladimir M.
AU  - Brdarić, Tanja
AU  - Marčeta Kaninski, Milica
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1390
AB  - Human exposure to persistent organic contaminants, from building materials, negatively affects peoples health and overall quality of life. This paper presents the validation and uncertainty assessment of the analytical method, developed for the simultaneous determination of 16 EPA polycyclic aromatic hydrocarbons (PAHs) in solid-solid concrete by ultra-performance liquid chromatography with photo diode-array detector. Linearity of calibration curves was good over the whole range of calibration. Limits of detection varied between 0.2 and 2.9 mu gkg(-1). The accuracy in terms of recovery of the validated method is within the range from 54 to 106%. The developed method proved to be appropriate for analysis of PAHs and can be used for the quality control testing of concrete during the construction of new buildings, the old residences and related buildings associated with sick-building syndrome. In addition, this is the first reported method described for the evaluation of PAHs in solid-solid concrete. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Journal of Hazardous Materials
T1  - Validation and uncertainty estimation of UPLC-PDA method for the analysis of polycyclic aromatic hydrocarbons in concrete
VL  - 325
SP  - 271
EP  - 278
DO  - 10.1016/j.jhazmat.2016.12.008
ER  - 
@article{
author = "Aćimović, Danka D. and Nikolić, Željka and Tošić, Miloš S. and Milovanović, Dubravka S. and Nikolić, Vladimir M. and Brdarić, Tanja and Marčeta Kaninski, Milica",
year = "2017",
abstract = "Human exposure to persistent organic contaminants, from building materials, negatively affects peoples health and overall quality of life. This paper presents the validation and uncertainty assessment of the analytical method, developed for the simultaneous determination of 16 EPA polycyclic aromatic hydrocarbons (PAHs) in solid-solid concrete by ultra-performance liquid chromatography with photo diode-array detector. Linearity of calibration curves was good over the whole range of calibration. Limits of detection varied between 0.2 and 2.9 mu gkg(-1). The accuracy in terms of recovery of the validated method is within the range from 54 to 106%. The developed method proved to be appropriate for analysis of PAHs and can be used for the quality control testing of concrete during the construction of new buildings, the old residences and related buildings associated with sick-building syndrome. In addition, this is the first reported method described for the evaluation of PAHs in solid-solid concrete. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Journal of Hazardous Materials",
title = "Validation and uncertainty estimation of UPLC-PDA method for the analysis of polycyclic aromatic hydrocarbons in concrete",
volume = "325",
pages = "271-278",
doi = "10.1016/j.jhazmat.2016.12.008"
}
Aćimović, D. D., Nikolić, Ž., Tošić, M. S., Milovanović, D. S., Nikolić, V. M., Brdarić, T.,& Marčeta Kaninski, M.. (2017). Validation and uncertainty estimation of UPLC-PDA method for the analysis of polycyclic aromatic hydrocarbons in concrete. in Journal of Hazardous Materials, 325, 271-278.
https://doi.org/10.1016/j.jhazmat.2016.12.008
Aćimović DD, Nikolić Ž, Tošić MS, Milovanović DS, Nikolić VM, Brdarić T, Marčeta Kaninski M. Validation and uncertainty estimation of UPLC-PDA method for the analysis of polycyclic aromatic hydrocarbons in concrete. in Journal of Hazardous Materials. 2017;325:271-278.
doi:10.1016/j.jhazmat.2016.12.008 .
Aćimović, Danka D., Nikolić, Željka, Tošić, Miloš S., Milovanović, Dubravka S., Nikolić, Vladimir M., Brdarić, Tanja, Marčeta Kaninski, Milica, "Validation and uncertainty estimation of UPLC-PDA method for the analysis of polycyclic aromatic hydrocarbons in concrete" in Journal of Hazardous Materials, 325 (2017):271-278,
https://doi.org/10.1016/j.jhazmat.2016.12.008 . .
8
8
10

Novel photochemical advanced oxidation process for the removal of polycyclic aromatic hydrocarbons from polluted concrete

Nikolić, Vladimir M.; Karić, Slavko D.; Nikolić, Željka; Tošić, Miloš S.; Tasić, Gvozden S.; Milovanović, Dubravka S.; Marčeta Kaninski, Milica

(2017)

TY  - JOUR
AU  - Nikolić, Vladimir M.
AU  - Karić, Slavko D.
AU  - Nikolić, Željka
AU  - Tošić, Miloš S.
AU  - Tasić, Gvozden S.
AU  - Milovanović, Dubravka S.
AU  - Marčeta Kaninski, Milica
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1399
AB  - Polycyclic aromatic hydrocarbons (PAHs) are denoted by International Agency for Research on Cancer as mutagens, teratogens and carcinogenic to humans. In 2013, Vinca Institute of Nuclear Sciences was hired to determine whether PAHs are present in significant quantities in the concrete walls of newly built residential buildings (about 15,000 m(2) of apartments), and to propose appropriate technical solution for PAH removal in this case. As PAH occurrence, determination and remediation in concrete is, to our knowledge, a completely new field, it was necessary to face a number of challenges, including lack of regulations considering contents of PAHs in concrete, investigation of the origin of PAH contamination in concrete (if established), as Well as finding feasible and non-expensive remediation method, which would be appropriate for residential space. In first part of this study, a Markedly high concentrations of 5 PAHs were detected by UPLC/PDA analysis in samples of both concrete walls and mineral oil used for coating of planks during formwork, while control concrete and mineral oil, taken from independent construction site, were taken as a reference. Such coincidence, as well as the fact that mineral oil has penetrated into the concrete which is proven by ASAP/MS analysis, pointed to the mineral oil as the most probable source of PAH contamination of the concrete. In the second part, an efficient and easy-applicable method for PAH oxidation in concrete (called FHO3AOP), using UV light, H2O2 and ozone, was presented and discussed in terms of previous literature data. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Chemical Engineering Journal
T1  - Novel photochemical advanced oxidation process for the removal of polycyclic aromatic hydrocarbons from polluted concrete
VL  - 312
SP  - 99
EP  - 105
DO  - 10.1016/j.cej.2016.11.117
ER  - 
@article{
author = "Nikolić, Vladimir M. and Karić, Slavko D. and Nikolić, Željka and Tošić, Miloš S. and Tasić, Gvozden S. and Milovanović, Dubravka S. and Marčeta Kaninski, Milica",
year = "2017",
abstract = "Polycyclic aromatic hydrocarbons (PAHs) are denoted by International Agency for Research on Cancer as mutagens, teratogens and carcinogenic to humans. In 2013, Vinca Institute of Nuclear Sciences was hired to determine whether PAHs are present in significant quantities in the concrete walls of newly built residential buildings (about 15,000 m(2) of apartments), and to propose appropriate technical solution for PAH removal in this case. As PAH occurrence, determination and remediation in concrete is, to our knowledge, a completely new field, it was necessary to face a number of challenges, including lack of regulations considering contents of PAHs in concrete, investigation of the origin of PAH contamination in concrete (if established), as Well as finding feasible and non-expensive remediation method, which would be appropriate for residential space. In first part of this study, a Markedly high concentrations of 5 PAHs were detected by UPLC/PDA analysis in samples of both concrete walls and mineral oil used for coating of planks during formwork, while control concrete and mineral oil, taken from independent construction site, were taken as a reference. Such coincidence, as well as the fact that mineral oil has penetrated into the concrete which is proven by ASAP/MS analysis, pointed to the mineral oil as the most probable source of PAH contamination of the concrete. In the second part, an efficient and easy-applicable method for PAH oxidation in concrete (called FHO3AOP), using UV light, H2O2 and ozone, was presented and discussed in terms of previous literature data. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Chemical Engineering Journal",
title = "Novel photochemical advanced oxidation process for the removal of polycyclic aromatic hydrocarbons from polluted concrete",
volume = "312",
pages = "99-105",
doi = "10.1016/j.cej.2016.11.117"
}
Nikolić, V. M., Karić, S. D., Nikolić, Ž., Tošić, M. S., Tasić, G. S., Milovanović, D. S.,& Marčeta Kaninski, M.. (2017). Novel photochemical advanced oxidation process for the removal of polycyclic aromatic hydrocarbons from polluted concrete. in Chemical Engineering Journal, 312, 99-105.
https://doi.org/10.1016/j.cej.2016.11.117
Nikolić VM, Karić SD, Nikolić Ž, Tošić MS, Tasić GS, Milovanović DS, Marčeta Kaninski M. Novel photochemical advanced oxidation process for the removal of polycyclic aromatic hydrocarbons from polluted concrete. in Chemical Engineering Journal. 2017;312:99-105.
doi:10.1016/j.cej.2016.11.117 .
Nikolić, Vladimir M., Karić, Slavko D., Nikolić, Željka, Tošić, Miloš S., Tasić, Gvozden S., Milovanović, Dubravka S., Marčeta Kaninski, Milica, "Novel photochemical advanced oxidation process for the removal of polycyclic aromatic hydrocarbons from polluted concrete" in Chemical Engineering Journal, 312 (2017):99-105,
https://doi.org/10.1016/j.cej.2016.11.117 . .
11
6
10

Electrochemical oxidation of the polycyclic aromatic hydrocarbons in polluted concrete of the residential buildings

Aćimović, Danka D.; Karić, Slavko D.; Nikolić, Željka; Brdarić, Tanja; Tasić, Gvozden S.; Marčeta Kaninski, Milica; Nikolić, Vladimir M.

(2017)

TY  - JOUR
AU  - Aćimović, Danka D.
AU  - Karić, Slavko D.
AU  - Nikolić, Željka
AU  - Brdarić, Tanja
AU  - Tasić, Gvozden S.
AU  - Marčeta Kaninski, Milica
AU  - Nikolić, Vladimir M.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1352
AB  - Polycyclic aromatic hydrocarbons (PAH) have been listed by the United States Environmental Protection Agency (US EPA) and by the European Community as priority environmental pollutants. The removal of PAHs from soils, sediments and waste water has attracted attention of scientists and engineers for several decades. Electrochemical oxidation of PAH compounds in water, is receiving increasing attention, due to its convenience and simplicity. In this study we performed electrochemical oxidation of 16 EPA PAHs mixture in 10% NaCI aqueous solution in potentiostatic conditions, at voltage 1 V. Decrease of concentration of some individual PAHs, up to 70% referred to their starting concentration, after 60 min of electrolysis, was confirmed by UPLC/PDA analysis. In further work investigation was extrapolated to in situ removal of PAHs from concrete, as the medium where, to our knowledge, such way of PAH removal has not been investigated before. High concentrations of PAH contamination occurred in the concrete structure of the residential buildings in Belgrade in 2014. Application of DC voltage of 50 V between nickel and stainless steel electrodes packed in the concrete wall, moisturized with the 10% NaCI solution, led to considerable removal of the pollutants by oxidation process throughout the concrete. (C) 2016 Elsevier Ltd. All rights reserved.
T2  - Environmental Pollution
T1  - Electrochemical oxidation of the polycyclic aromatic hydrocarbons in polluted concrete of the residential buildings
VL  - 220
SP  - 393
EP  - 399
DO  - 10.1016/j.envpol.2016.09.075
ER  - 
@article{
author = "Aćimović, Danka D. and Karić, Slavko D. and Nikolić, Željka and Brdarić, Tanja and Tasić, Gvozden S. and Marčeta Kaninski, Milica and Nikolić, Vladimir M.",
year = "2017",
abstract = "Polycyclic aromatic hydrocarbons (PAH) have been listed by the United States Environmental Protection Agency (US EPA) and by the European Community as priority environmental pollutants. The removal of PAHs from soils, sediments and waste water has attracted attention of scientists and engineers for several decades. Electrochemical oxidation of PAH compounds in water, is receiving increasing attention, due to its convenience and simplicity. In this study we performed electrochemical oxidation of 16 EPA PAHs mixture in 10% NaCI aqueous solution in potentiostatic conditions, at voltage 1 V. Decrease of concentration of some individual PAHs, up to 70% referred to their starting concentration, after 60 min of electrolysis, was confirmed by UPLC/PDA analysis. In further work investigation was extrapolated to in situ removal of PAHs from concrete, as the medium where, to our knowledge, such way of PAH removal has not been investigated before. High concentrations of PAH contamination occurred in the concrete structure of the residential buildings in Belgrade in 2014. Application of DC voltage of 50 V between nickel and stainless steel electrodes packed in the concrete wall, moisturized with the 10% NaCI solution, led to considerable removal of the pollutants by oxidation process throughout the concrete. (C) 2016 Elsevier Ltd. All rights reserved.",
journal = "Environmental Pollution",
title = "Electrochemical oxidation of the polycyclic aromatic hydrocarbons in polluted concrete of the residential buildings",
volume = "220",
pages = "393-399",
doi = "10.1016/j.envpol.2016.09.075"
}
Aćimović, D. D., Karić, S. D., Nikolić, Ž., Brdarić, T., Tasić, G. S., Marčeta Kaninski, M.,& Nikolić, V. M.. (2017). Electrochemical oxidation of the polycyclic aromatic hydrocarbons in polluted concrete of the residential buildings. in Environmental Pollution, 220, 393-399.
https://doi.org/10.1016/j.envpol.2016.09.075
Aćimović DD, Karić SD, Nikolić Ž, Brdarić T, Tasić GS, Marčeta Kaninski M, Nikolić VM. Electrochemical oxidation of the polycyclic aromatic hydrocarbons in polluted concrete of the residential buildings. in Environmental Pollution. 2017;220:393-399.
doi:10.1016/j.envpol.2016.09.075 .
Aćimović, Danka D., Karić, Slavko D., Nikolić, Željka, Brdarić, Tanja, Tasić, Gvozden S., Marčeta Kaninski, Milica, Nikolić, Vladimir M., "Electrochemical oxidation of the polycyclic aromatic hydrocarbons in polluted concrete of the residential buildings" in Environmental Pollution, 220 (2017):393-399,
https://doi.org/10.1016/j.envpol.2016.09.075 . .
12
5
11

Improved HER activity of Ni and stainless steel electrodes activated by NiCoMo ionic activator - A combined DFT and experimental study

Maslovara, Slađana Lj.; Vasić Anićijević, Dragana D.; Kijevčanin, Mirjana Lj.; Radović, Ivona R.; Nikolić, Vladimir M.; Laušević, Petar; Marčeta Kaninski, Milica

(2017)

TY  - JOUR
AU  - Maslovara, Slađana Lj.
AU  - Vasić Anićijević, Dragana D.
AU  - Kijevčanin, Mirjana Lj.
AU  - Radović, Ivona R.
AU  - Nikolić, Vladimir M.
AU  - Laušević, Petar
AU  - Marčeta Kaninski, Milica
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1610
AB  - In this paper we discussed various factors contributing to the improvement of hydrogen evolution reaction (HER) activity of Ni and stainless steel electrodes activated by in situ addition of NiCoMo activators, using a combination of experimental techniques and DFT calculations. By comparing energy consumption of stainless steel (SS) electrodes in a lab scale alkaline electrolyzer with and without ionic activation, we obtained reduction of energy consumption by 21% at industrial conditions (high current density and temperature). We recorded U-I curves for activated and non-activated stainless steel electrodes in the current density range from 40 to 500 mA cm(2) and in the temperature range 298-343 K, and the obtained results were used in an electrochemical model of the laboratory alkaline electrolyzer. Increase of the electrode surface upon addition of ionic activators was confirmed by profilometric measurements and SEM analysis. Finally, we applied density functional theory (DFT) to discuss partial roles of applied ionic activators (Ni, Co and Mo) in the modification and improvement of the intrinsic properties of the cathode towards the HER in alkaline medium. From the combination of profilometric, SEM and DFT results, we conclude that the main factor contributing to the improvement of HER activity of Ni electrodes upon NiCoMo activation is the increase of electrode surface area. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - Improved HER activity of Ni and stainless steel electrodes activated by NiCoMo ionic activator - A combined DFT and experimental study
VL  - 42
IS  - 8
SP  - 5072
EP  - 5082
DO  - 10.1016/j.ijhydene.2016.12.116
ER  - 
@article{
author = "Maslovara, Slađana Lj. and Vasić Anićijević, Dragana D. and Kijevčanin, Mirjana Lj. and Radović, Ivona R. and Nikolić, Vladimir M. and Laušević, Petar and Marčeta Kaninski, Milica",
year = "2017",
abstract = "In this paper we discussed various factors contributing to the improvement of hydrogen evolution reaction (HER) activity of Ni and stainless steel electrodes activated by in situ addition of NiCoMo activators, using a combination of experimental techniques and DFT calculations. By comparing energy consumption of stainless steel (SS) electrodes in a lab scale alkaline electrolyzer with and without ionic activation, we obtained reduction of energy consumption by 21% at industrial conditions (high current density and temperature). We recorded U-I curves for activated and non-activated stainless steel electrodes in the current density range from 40 to 500 mA cm(2) and in the temperature range 298-343 K, and the obtained results were used in an electrochemical model of the laboratory alkaline electrolyzer. Increase of the electrode surface upon addition of ionic activators was confirmed by profilometric measurements and SEM analysis. Finally, we applied density functional theory (DFT) to discuss partial roles of applied ionic activators (Ni, Co and Mo) in the modification and improvement of the intrinsic properties of the cathode towards the HER in alkaline medium. From the combination of profilometric, SEM and DFT results, we conclude that the main factor contributing to the improvement of HER activity of Ni electrodes upon NiCoMo activation is the increase of electrode surface area. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "Improved HER activity of Ni and stainless steel electrodes activated by NiCoMo ionic activator - A combined DFT and experimental study",
volume = "42",
number = "8",
pages = "5072-5082",
doi = "10.1016/j.ijhydene.2016.12.116"
}
Maslovara, S. Lj., Vasić Anićijević, D. D., Kijevčanin, M. Lj., Radović, I. R., Nikolić, V. M., Laušević, P.,& Marčeta Kaninski, M.. (2017). Improved HER activity of Ni and stainless steel electrodes activated by NiCoMo ionic activator - A combined DFT and experimental study. in International Journal of Hydrogen Energy, 42(8), 5072-5082.
https://doi.org/10.1016/j.ijhydene.2016.12.116
Maslovara SL, Vasić Anićijević DD, Kijevčanin ML, Radović IR, Nikolić VM, Laušević P, Marčeta Kaninski M. Improved HER activity of Ni and stainless steel electrodes activated by NiCoMo ionic activator - A combined DFT and experimental study. in International Journal of Hydrogen Energy. 2017;42(8):5072-5082.
doi:10.1016/j.ijhydene.2016.12.116 .
Maslovara, Slađana Lj., Vasić Anićijević, Dragana D., Kijevčanin, Mirjana Lj., Radović, Ivona R., Nikolić, Vladimir M., Laušević, Petar, Marčeta Kaninski, Milica, "Improved HER activity of Ni and stainless steel electrodes activated by NiCoMo ionic activator - A combined DFT and experimental study" in International Journal of Hydrogen Energy, 42, no. 8 (2017):5072-5082,
https://doi.org/10.1016/j.ijhydene.2016.12.116 . .
6
4
7

Novel Non-Stoichiometric Tungsten Oxide Based Catalyst Support for the Increased CO Tolerance in PEMFC

Marčeta Kaninski, Milica; Brković, Snežana M.; Perović, Ivana; Laušević, Petar; Pašti, Igor A.; Šaponjić, Đorđe; Nikolić, Vladimir M.

(2016)

TY  - CONF
AU  - Marčeta Kaninski, Milica
AU  - Brković, Snežana M.
AU  - Perović, Ivana
AU  - Laušević, Petar
AU  - Pašti, Igor A.
AU  - Šaponjić, Đorđe
AU  - Nikolić, Vladimir M.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11570
AB  - Cost and durability are two major factors that delay large-scale production and commercialization of PEMFC's. One of the technologically ready application of the proton exchange membrane fuel cells (PEMFC) is in the combined heat and power systems (µCHP), which are used in the individual households or buildings. The performance of the µCHP systems greatly depends on the purity of the hydrogen stream, which is produced via methane reforming process. To overcome low CO tolerance of the commercially used Pt electrocatalyst and to lower the catalyst content we have prepared non-stoichiometric tungsten oxide as a Pt based catalyst support. We have prepared several catalysts designated as 10% Pt/WO3-C, 20% Pt/WO3-C, 40% Pt/WO3-C. The structure and morphology characteristics of the prepared catalysts were investigated using XRD, TEM and SEM/EDX techniques. Investigations concerning electroactivity of these catalysts towards the hydrogen oxidation reaction (HOR) were performed using cyclic voltammetry, linear sweep voltammetry, forming an ultra thin catalyst layer onto RDE. Mechanism and the kinetics of the prepared catalysts towards HOR were evaluated and if was found that increased mass activity of the 10% Pt/WO3-C could be attributed to the interactive naure of the WO3 catalyst support. Obtained results clearly show increased CO tolerance of Pt/WO3-C catalyst compared to commercial Pt/C, which was confirmed by lowering the stripping potential of the CO, adsorbed on the surface of the 10% Pt/WO3-C. catalyst is more facile than that on commercial 40% Pt/C. These catalysts were employed as anode catalyst in the MEA, and the performance of single cell PEMFC were compared to commercial catalyst.
C3  - PRiME 2016/230th ECS Meeting October 2, 2016 - October 7, 2016 Honolulu, HI
T1  - Novel Non-Stoichiometric Tungsten Oxide Based Catalyst Support for the Increased CO Tolerance in PEMFC
VL  - MA2016-02
IS  - 38
SP  - 2629
EP  - 2629
DO  - 10.1149/MA2016-02/38/2629
ER  - 
@conference{
author = "Marčeta Kaninski, Milica and Brković, Snežana M. and Perović, Ivana and Laušević, Petar and Pašti, Igor A. and Šaponjić, Đorđe and Nikolić, Vladimir M.",
year = "2016",
abstract = "Cost and durability are two major factors that delay large-scale production and commercialization of PEMFC's. One of the technologically ready application of the proton exchange membrane fuel cells (PEMFC) is in the combined heat and power systems (µCHP), which are used in the individual households or buildings. The performance of the µCHP systems greatly depends on the purity of the hydrogen stream, which is produced via methane reforming process. To overcome low CO tolerance of the commercially used Pt electrocatalyst and to lower the catalyst content we have prepared non-stoichiometric tungsten oxide as a Pt based catalyst support. We have prepared several catalysts designated as 10% Pt/WO3-C, 20% Pt/WO3-C, 40% Pt/WO3-C. The structure and morphology characteristics of the prepared catalysts were investigated using XRD, TEM and SEM/EDX techniques. Investigations concerning electroactivity of these catalysts towards the hydrogen oxidation reaction (HOR) were performed using cyclic voltammetry, linear sweep voltammetry, forming an ultra thin catalyst layer onto RDE. Mechanism and the kinetics of the prepared catalysts towards HOR were evaluated and if was found that increased mass activity of the 10% Pt/WO3-C could be attributed to the interactive naure of the WO3 catalyst support. Obtained results clearly show increased CO tolerance of Pt/WO3-C catalyst compared to commercial Pt/C, which was confirmed by lowering the stripping potential of the CO, adsorbed on the surface of the 10% Pt/WO3-C. catalyst is more facile than that on commercial 40% Pt/C. These catalysts were employed as anode catalyst in the MEA, and the performance of single cell PEMFC were compared to commercial catalyst.",
journal = "PRiME 2016/230th ECS Meeting October 2, 2016 - October 7, 2016 Honolulu, HI",
title = "Novel Non-Stoichiometric Tungsten Oxide Based Catalyst Support for the Increased CO Tolerance in PEMFC",
volume = "MA2016-02",
number = "38",
pages = "2629-2629",
doi = "10.1149/MA2016-02/38/2629"
}
Marčeta Kaninski, M., Brković, S. M., Perović, I., Laušević, P., Pašti, I. A., Šaponjić, Đ.,& Nikolić, V. M.. (2016). Novel Non-Stoichiometric Tungsten Oxide Based Catalyst Support for the Increased CO Tolerance in PEMFC. in PRiME 2016/230th ECS Meeting October 2, 2016 - October 7, 2016 Honolulu, HI, MA2016-02(38), 2629-2629.
https://doi.org/10.1149/MA2016-02/38/2629
Marčeta Kaninski M, Brković SM, Perović I, Laušević P, Pašti IA, Šaponjić Đ, Nikolić VM. Novel Non-Stoichiometric Tungsten Oxide Based Catalyst Support for the Increased CO Tolerance in PEMFC. in PRiME 2016/230th ECS Meeting October 2, 2016 - October 7, 2016 Honolulu, HI. 2016;MA2016-02(38):2629-2629.
doi:10.1149/MA2016-02/38/2629 .
Marčeta Kaninski, Milica, Brković, Snežana M., Perović, Ivana, Laušević, Petar, Pašti, Igor A., Šaponjić, Đorđe, Nikolić, Vladimir M., "Novel Non-Stoichiometric Tungsten Oxide Based Catalyst Support for the Increased CO Tolerance in PEMFC" in PRiME 2016/230th ECS Meeting October 2, 2016 - October 7, 2016 Honolulu, HI, MA2016-02, no. 38 (2016):2629-2629,
https://doi.org/10.1149/MA2016-02/38/2629 . .

Efficient hydrogen production using ternary Ni-Cu-Mo ionic activator

Perovic, Nana M.; Aćimović, Danka D.; Tasić, Gvozden S.; Karić, Slavko D.; Laušević, Petar; Marčeta Kaninski, Milica; Nikolić, Vladimir M.

(2015)

TY  - JOUR
AU  - Perovic, Nana M.
AU  - Aćimović, Danka D.
AU  - Tasić, Gvozden S.
AU  - Karić, Slavko D.
AU  - Laušević, Petar
AU  - Marčeta Kaninski, Milica
AU  - Nikolić, Vladimir M.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/533
AB  - This manuscript presents contribution on the improved efficiency of the alkaline electrolytic production of hydrogen by in situ adding activating compounds directly into the electrolyte during the electrolytic process. New electrode material, ternary system, Ni-Cu-Mo, was applied as activating compound i.e. ionic activator. The energy requirements per mass unit of hydrogen produced is reduced for more than 10%, compared to non-activated, 30 wt. % KOH electrolyte system. Energy saving is higher at higher temperatures and at higher current densities. During the electrolytic process, the ionic activators develop nanosized porous structure deposits on the surface of the Ni electrode. Presented results point out a strong possibility of the usage of ternary ionic activators in industrial applications. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - Efficient hydrogen production using ternary Ni-Cu-Mo ionic activator
VL  - 40
IS  - 19
SP  - 6270
EP  - 6275
DO  - 10.1016/j.ijhydene.2015.03.003
ER  - 
@article{
author = "Perovic, Nana M. and Aćimović, Danka D. and Tasić, Gvozden S. and Karić, Slavko D. and Laušević, Petar and Marčeta Kaninski, Milica and Nikolić, Vladimir M.",
year = "2015",
abstract = "This manuscript presents contribution on the improved efficiency of the alkaline electrolytic production of hydrogen by in situ adding activating compounds directly into the electrolyte during the electrolytic process. New electrode material, ternary system, Ni-Cu-Mo, was applied as activating compound i.e. ionic activator. The energy requirements per mass unit of hydrogen produced is reduced for more than 10%, compared to non-activated, 30 wt. % KOH electrolyte system. Energy saving is higher at higher temperatures and at higher current densities. During the electrolytic process, the ionic activators develop nanosized porous structure deposits on the surface of the Ni electrode. Presented results point out a strong possibility of the usage of ternary ionic activators in industrial applications. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "Efficient hydrogen production using ternary Ni-Cu-Mo ionic activator",
volume = "40",
number = "19",
pages = "6270-6275",
doi = "10.1016/j.ijhydene.2015.03.003"
}
Perovic, N. M., Aćimović, D. D., Tasić, G. S., Karić, S. D., Laušević, P., Marčeta Kaninski, M.,& Nikolić, V. M.. (2015). Efficient hydrogen production using ternary Ni-Cu-Mo ionic activator. in International Journal of Hydrogen Energy, 40(19), 6270-6275.
https://doi.org/10.1016/j.ijhydene.2015.03.003
Perovic NM, Aćimović DD, Tasić GS, Karić SD, Laušević P, Marčeta Kaninski M, Nikolić VM. Efficient hydrogen production using ternary Ni-Cu-Mo ionic activator. in International Journal of Hydrogen Energy. 2015;40(19):6270-6275.
doi:10.1016/j.ijhydene.2015.03.003 .
Perovic, Nana M., Aćimović, Danka D., Tasić, Gvozden S., Karić, Slavko D., Laušević, Petar, Marčeta Kaninski, Milica, Nikolić, Vladimir M., "Efficient hydrogen production using ternary Ni-Cu-Mo ionic activator" in International Journal of Hydrogen Energy, 40, no. 19 (2015):6270-6275,
https://doi.org/10.1016/j.ijhydene.2015.03.003 . .
6
9
7
9

Kinetics of hydrogen evolution reaction in alkaline electrolysis on a Ni cathode in the presence of Ni-Co-Mo based ionic activators

Nikolić, Vladimir M.; Maslovara, Slađana Lj.; Tasić, Gvozden S.; Brdarić, Tanja; Laušević, Petar; Radak, Bojan; Marčeta Kaninski, Milica

(2015)

TY  - JOUR
AU  - Nikolić, Vladimir M.
AU  - Maslovara, Slađana Lj.
AU  - Tasić, Gvozden S.
AU  - Brdarić, Tanja
AU  - Laušević, Petar
AU  - Radak, Bojan
AU  - Marčeta Kaninski, Milica
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/705
AB  - This paper presents investigations on the influence of in-situ ionic activation using combination of three D-metals: Ni, Co and Moon the hydrogen evolution reaction (HER) mechanism and kinetics. Polarization measurements were performed to obtain kinetic parameters for the HER and the results are presented to show Tafel slopes, exchange current densities and apparent energy of activation. The values of the kinetic parameters confirm the existence of two Tafel slopes, in the case of NiCoMo based ionic activators (i.a.) in the investigated temperature range, with very high values of the exchange current density. Electrochemical impedance spectroscopy measurements were employed to further investigate the origin of the obtained electrocatalytic effect on the HER. The measurements were performed at several overpotentials and temperatures. It was found that co-deposition of Ni, Co and Mo species on the Ni cathode results in a large number of active sites for hydrogen adsorption, and a synergetic effect giving electronic structure suitable for the HER, are the main factors contributing to the enhanced HER kinetics. It was shown that EIS measurements had a crucial role in determining the HER mechanism, especially with the complex in-situ activation of the alkaline electrolysis. (C) 2015 Published by Elsevier B.V.
T2  - Applied Catalysis. B: Environmental
T1  - Kinetics of hydrogen evolution reaction in alkaline electrolysis on a Ni cathode in the presence of Ni-Co-Mo based ionic activators
VL  - 179
SP  - 88
EP  - 94
DO  - 10.1016/j.apcatb.2015.05.012
ER  - 
@article{
author = "Nikolić, Vladimir M. and Maslovara, Slađana Lj. and Tasić, Gvozden S. and Brdarić, Tanja and Laušević, Petar and Radak, Bojan and Marčeta Kaninski, Milica",
year = "2015",
abstract = "This paper presents investigations on the influence of in-situ ionic activation using combination of three D-metals: Ni, Co and Moon the hydrogen evolution reaction (HER) mechanism and kinetics. Polarization measurements were performed to obtain kinetic parameters for the HER and the results are presented to show Tafel slopes, exchange current densities and apparent energy of activation. The values of the kinetic parameters confirm the existence of two Tafel slopes, in the case of NiCoMo based ionic activators (i.a.) in the investigated temperature range, with very high values of the exchange current density. Electrochemical impedance spectroscopy measurements were employed to further investigate the origin of the obtained electrocatalytic effect on the HER. The measurements were performed at several overpotentials and temperatures. It was found that co-deposition of Ni, Co and Mo species on the Ni cathode results in a large number of active sites for hydrogen adsorption, and a synergetic effect giving electronic structure suitable for the HER, are the main factors contributing to the enhanced HER kinetics. It was shown that EIS measurements had a crucial role in determining the HER mechanism, especially with the complex in-situ activation of the alkaline electrolysis. (C) 2015 Published by Elsevier B.V.",
journal = "Applied Catalysis. B: Environmental",
title = "Kinetics of hydrogen evolution reaction in alkaline electrolysis on a Ni cathode in the presence of Ni-Co-Mo based ionic activators",
volume = "179",
pages = "88-94",
doi = "10.1016/j.apcatb.2015.05.012"
}
Nikolić, V. M., Maslovara, S. Lj., Tasić, G. S., Brdarić, T., Laušević, P., Radak, B.,& Marčeta Kaninski, M.. (2015). Kinetics of hydrogen evolution reaction in alkaline electrolysis on a Ni cathode in the presence of Ni-Co-Mo based ionic activators. in Applied Catalysis. B: Environmental, 179, 88-94.
https://doi.org/10.1016/j.apcatb.2015.05.012
Nikolić VM, Maslovara SL, Tasić GS, Brdarić T, Laušević P, Radak B, Marčeta Kaninski M. Kinetics of hydrogen evolution reaction in alkaline electrolysis on a Ni cathode in the presence of Ni-Co-Mo based ionic activators. in Applied Catalysis. B: Environmental. 2015;179:88-94.
doi:10.1016/j.apcatb.2015.05.012 .
Nikolić, Vladimir M., Maslovara, Slađana Lj., Tasić, Gvozden S., Brdarić, Tanja, Laušević, Petar, Radak, Bojan, Marčeta Kaninski, Milica, "Kinetics of hydrogen evolution reaction in alkaline electrolysis on a Ni cathode in the presence of Ni-Co-Mo based ionic activators" in Applied Catalysis. B: Environmental, 179 (2015):88-94,
https://doi.org/10.1016/j.apcatb.2015.05.012 . .
107
78
111

Electrochemistry of cobalt ethylenediamine complexes at high pH

Miulović, Snežana M.; Nikolić, Vladimir M.; Laušević, Petar; Aćimović, Danka D.; Tasić, Gvozden S.; Marčeta Kaninski, Milica

(2015)

TY  - JOUR
AU  - Miulović, Snežana M.
AU  - Nikolić, Vladimir M.
AU  - Laušević, Petar
AU  - Aćimović, Danka D.
AU  - Tasić, Gvozden S.
AU  - Marčeta Kaninski, Milica
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/868
AB  - The electrochemical behavior of cobalt ethylenediamine complexes (Co(en)), at pH 12 was investigated by cyclic voltammetry (CV), the potentiostatic pulse technique and polarization curve measurements at stationary and rotating glassy carbon (GC) electrodes. It was shown that sixteen different species could be formed in a solution containing Co(en)3, with the most stable one at all pH values being [Co(en)(3)](3+). The reduction of [Co(en)(3)](3+) into [Co(en)(3)](2+) was shown to be a totally irreversible, one-electron exchange reaction. Further reduction of [Co(en)(3)](2+) was found to be a complex process leading to cobalt deposition at potentials more negative than -1.45 V vs. SCE. The process of [Co(en)(3)](2+) oxidation was also complex and most probably coupled with chemical reactions.
T2  - Journal of the Serbian Chemical Society
T1  - Electrochemistry of cobalt ethylenediamine complexes at high pH
VL  - 80
IS  - 12
SP  - 1515
EP  - 1527
DO  - 10.2298/JSC150327079M
ER  - 
@article{
author = "Miulović, Snežana M. and Nikolić, Vladimir M. and Laušević, Petar and Aćimović, Danka D. and Tasić, Gvozden S. and Marčeta Kaninski, Milica",
year = "2015",
abstract = "The electrochemical behavior of cobalt ethylenediamine complexes (Co(en)), at pH 12 was investigated by cyclic voltammetry (CV), the potentiostatic pulse technique and polarization curve measurements at stationary and rotating glassy carbon (GC) electrodes. It was shown that sixteen different species could be formed in a solution containing Co(en)3, with the most stable one at all pH values being [Co(en)(3)](3+). The reduction of [Co(en)(3)](3+) into [Co(en)(3)](2+) was shown to be a totally irreversible, one-electron exchange reaction. Further reduction of [Co(en)(3)](2+) was found to be a complex process leading to cobalt deposition at potentials more negative than -1.45 V vs. SCE. The process of [Co(en)(3)](2+) oxidation was also complex and most probably coupled with chemical reactions.",
journal = "Journal of the Serbian Chemical Society",
title = "Electrochemistry of cobalt ethylenediamine complexes at high pH",
volume = "80",
number = "12",
pages = "1515-1527",
doi = "10.2298/JSC150327079M"
}
Miulović, S. M., Nikolić, V. M., Laušević, P., Aćimović, D. D., Tasić, G. S.,& Marčeta Kaninski, M.. (2015). Electrochemistry of cobalt ethylenediamine complexes at high pH. in Journal of the Serbian Chemical Society, 80(12), 1515-1527.
https://doi.org/10.2298/JSC150327079M
Miulović SM, Nikolić VM, Laušević P, Aćimović DD, Tasić GS, Marčeta Kaninski M. Electrochemistry of cobalt ethylenediamine complexes at high pH. in Journal of the Serbian Chemical Society. 2015;80(12):1515-1527.
doi:10.2298/JSC150327079M .
Miulović, Snežana M., Nikolić, Vladimir M., Laušević, Petar, Aćimović, Danka D., Tasić, Gvozden S., Marčeta Kaninski, Milica, "Electrochemistry of cobalt ethylenediamine complexes at high pH" in Journal of the Serbian Chemical Society, 80, no. 12 (2015):1515-1527,
https://doi.org/10.2298/JSC150327079M . .
2
2
2

Structure, chemisorption properties and electrocatalysis by Pd3Au overlayers on tungsten carbide - A DFT study

Vasić Anićijević, Dragana D.; Nikolić, Vladimir M.; Marčeta Kaninski, Milica; Pašti, Igor A.

(2015)

TY  - JOUR
AU  - Vasić Anićijević, Dragana D.
AU  - Nikolić, Vladimir M.
AU  - Marčeta Kaninski, Milica
AU  - Pašti, Igor A.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/528
AB  - Tungsten carbide (WC) is in the focus of current research as a suitable electrocatalyst support. Typically, supported monometallic system are investigated, in spite the fact that practice in catalysis shows that multimetallic systems can have significantly better performance compared to monometallic counterparts. In this work, WC-supported Pd3Au overlayers were studied theoretically using periodic Density Functional Theory calculations and compared to bulk-like Pd3Au and pure Pd. Stability of studied surfaces and the electronic structures were analyzed. Chemisorption properties were probed using atomic H and CO molecule. Electrocatalytic activities of studied surfaces were estimated using hydrogen binding energy as catalytic activity descriptor for hydrogen electrode reactions. The connection between H binding energy and CO adsorption energy enabled us to establish the link between catalytic activity and CO tolerance of studied surfaces. It is considered that formation of bimetallic layers on WC opens a new perspective in designing new core-shell electrocatalysts with high performance and significantly reduced content of noble metals. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - Structure, chemisorption properties and electrocatalysis by Pd3Au overlayers on tungsten carbide - A DFT study
VL  - 40
IS  - 18
SP  - 6085
EP  - 6096
DO  - 10.1016/j.ijhydene.2015.03.083
ER  - 
@article{
author = "Vasić Anićijević, Dragana D. and Nikolić, Vladimir M. and Marčeta Kaninski, Milica and Pašti, Igor A.",
year = "2015",
abstract = "Tungsten carbide (WC) is in the focus of current research as a suitable electrocatalyst support. Typically, supported monometallic system are investigated, in spite the fact that practice in catalysis shows that multimetallic systems can have significantly better performance compared to monometallic counterparts. In this work, WC-supported Pd3Au overlayers were studied theoretically using periodic Density Functional Theory calculations and compared to bulk-like Pd3Au and pure Pd. Stability of studied surfaces and the electronic structures were analyzed. Chemisorption properties were probed using atomic H and CO molecule. Electrocatalytic activities of studied surfaces were estimated using hydrogen binding energy as catalytic activity descriptor for hydrogen electrode reactions. The connection between H binding energy and CO adsorption energy enabled us to establish the link between catalytic activity and CO tolerance of studied surfaces. It is considered that formation of bimetallic layers on WC opens a new perspective in designing new core-shell electrocatalysts with high performance and significantly reduced content of noble metals. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "Structure, chemisorption properties and electrocatalysis by Pd3Au overlayers on tungsten carbide - A DFT study",
volume = "40",
number = "18",
pages = "6085-6096",
doi = "10.1016/j.ijhydene.2015.03.083"
}
Vasić Anićijević, D. D., Nikolić, V. M., Marčeta Kaninski, M.,& Pašti, I. A.. (2015). Structure, chemisorption properties and electrocatalysis by Pd3Au overlayers on tungsten carbide - A DFT study. in International Journal of Hydrogen Energy, 40(18), 6085-6096.
https://doi.org/10.1016/j.ijhydene.2015.03.083
Vasić Anićijević DD, Nikolić VM, Marčeta Kaninski M, Pašti IA. Structure, chemisorption properties and electrocatalysis by Pd3Au overlayers on tungsten carbide - A DFT study. in International Journal of Hydrogen Energy. 2015;40(18):6085-6096.
doi:10.1016/j.ijhydene.2015.03.083 .
Vasić Anićijević, Dragana D., Nikolić, Vladimir M., Marčeta Kaninski, Milica, Pašti, Igor A., "Structure, chemisorption properties and electrocatalysis by Pd3Au overlayers on tungsten carbide - A DFT study" in International Journal of Hydrogen Energy, 40, no. 18 (2015):6085-6096,
https://doi.org/10.1016/j.ijhydene.2015.03.083 . .
23
16
24

On the tungsten carbide synthesis for PEM fuel cell application - Problems, challenges and advantages

Nikolić, Vladimir M.; Perović, Ivana M.; Gavrilov, Nemanja M.; Pašti, Igor A.; Šaponjić, Aleksandra; Vulić, Predrag J.; Karić, Slavko D.; Babić, Biljana M.; Marčeta Kaninski, Milica

(2014)

TY  - JOUR
AU  - Nikolić, Vladimir M.
AU  - Perović, Ivana M.
AU  - Gavrilov, Nemanja M.
AU  - Pašti, Igor A.
AU  - Šaponjić, Aleksandra
AU  - Vulić, Predrag J.
AU  - Karić, Slavko D.
AU  - Babić, Biljana M.
AU  - Marčeta Kaninski, Milica
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6072
AB  - Fuel cell application of tungsten carbide is revisited starting with four different tungsten carbide precursors used for high temperature synthesis. It was shown that the final products greatly depend on the nature of the precursor. Using tungsten peroxide/2-propanol derived precursor almost pure WC was obtained which was subjected to further electrochemical investigation. It was shown that it is necessary to decorate WC with Pt nanoparticles in order to obtain satisfactory fuel cell performance, but catalytic activity of Pt/WC anode catalyst is not expected to overcome the activity of Pt/C. It is argued that new synthetic routes for the preparation of WC should be directed towards obtaining highly dispersed WC, that is, WC with high external surface area available for Pt deposition, rather than high specific surface area WC with large contribution of micropores having no importance when it comes to the use of WC as a catalyst support. The true benefit of the use of WC as catalyst support is found in increased CO tolerance/CO oxidation activity of WC-supported Pt catalysts. Qualitative mechanistic view on increased CO oxidation activity of Pt/WC is offered. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - On the tungsten carbide synthesis for PEM fuel cell application - Problems, challenges and advantages
VL  - 39
IS  - 21
SP  - 11175
EP  - 11185
DO  - 10.1016/j.ijhydene.2014.05.078
ER  - 
@article{
author = "Nikolić, Vladimir M. and Perović, Ivana M. and Gavrilov, Nemanja M. and Pašti, Igor A. and Šaponjić, Aleksandra and Vulić, Predrag J. and Karić, Slavko D. and Babić, Biljana M. and Marčeta Kaninski, Milica",
year = "2014",
abstract = "Fuel cell application of tungsten carbide is revisited starting with four different tungsten carbide precursors used for high temperature synthesis. It was shown that the final products greatly depend on the nature of the precursor. Using tungsten peroxide/2-propanol derived precursor almost pure WC was obtained which was subjected to further electrochemical investigation. It was shown that it is necessary to decorate WC with Pt nanoparticles in order to obtain satisfactory fuel cell performance, but catalytic activity of Pt/WC anode catalyst is not expected to overcome the activity of Pt/C. It is argued that new synthetic routes for the preparation of WC should be directed towards obtaining highly dispersed WC, that is, WC with high external surface area available for Pt deposition, rather than high specific surface area WC with large contribution of micropores having no importance when it comes to the use of WC as a catalyst support. The true benefit of the use of WC as catalyst support is found in increased CO tolerance/CO oxidation activity of WC-supported Pt catalysts. Qualitative mechanistic view on increased CO oxidation activity of Pt/WC is offered. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "On the tungsten carbide synthesis for PEM fuel cell application - Problems, challenges and advantages",
volume = "39",
number = "21",
pages = "11175-11185",
doi = "10.1016/j.ijhydene.2014.05.078"
}
Nikolić, V. M., Perović, I. M., Gavrilov, N. M., Pašti, I. A., Šaponjić, A., Vulić, P. J., Karić, S. D., Babić, B. M.,& Marčeta Kaninski, M.. (2014). On the tungsten carbide synthesis for PEM fuel cell application - Problems, challenges and advantages. in International Journal of Hydrogen Energy, 39(21), 11175-11185.
https://doi.org/10.1016/j.ijhydene.2014.05.078
Nikolić VM, Perović IM, Gavrilov NM, Pašti IA, Šaponjić A, Vulić PJ, Karić SD, Babić BM, Marčeta Kaninski M. On the tungsten carbide synthesis for PEM fuel cell application - Problems, challenges and advantages. in International Journal of Hydrogen Energy. 2014;39(21):11175-11185.
doi:10.1016/j.ijhydene.2014.05.078 .
Nikolić, Vladimir M., Perović, Ivana M., Gavrilov, Nemanja M., Pašti, Igor A., Šaponjić, Aleksandra, Vulić, Predrag J., Karić, Slavko D., Babić, Biljana M., Marčeta Kaninski, Milica, "On the tungsten carbide synthesis for PEM fuel cell application - Problems, challenges and advantages" in International Journal of Hydrogen Energy, 39, no. 21 (2014):11175-11185,
https://doi.org/10.1016/j.ijhydene.2014.05.078 . .
3
23
22
25

Energy consumption of the electrolytic hydrogen production using Zn-Co-Mo based activators-Part I

Maslovara, Slađana Lj.; Miulović, Snežana M.; Marčeta Kaninski, Milica; Tasić, Gvozden S.; Nikolić, Vladimir M.

(2013)

TY  - JOUR
AU  - Maslovara, Slađana Lj.
AU  - Miulović, Snežana M.
AU  - Marčeta Kaninski, Milica
AU  - Tasić, Gvozden S.
AU  - Nikolić, Vladimir M.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5314
AB  - Alkaline water electrolysis is one of the easiest methods for hydrogen production. Simplicity and usefulness are the two main features that characterize this method. The challenges for widespread use of water electrolysis are to reduce energy consumption, cost, durability and safety. In our investigation we obtain the results about energy efficiency system with the addition of ionic activators (i.a.) - Co(en)(3)Cl-3, Na2MoO4 and ZnCl2, in 6 M KOH solution. The requirements per mass unit of hydrogen produced are reduced up to 15% just using simplified process of the in situ activation with d-metals. The most important result of this study is that obtained deposit exhibit long-term stability at elevated temperatures and high current densities, like industrial conditions. (C) 2012 Elsevier B.V. All rights reserved.
T2  - Applied Catalysis. A: General
T1  - Energy consumption of the electrolytic hydrogen production using Zn-Co-Mo based activators-Part I
VL  - 451
SP  - 216
EP  - 219
DO  - 10.1016/j.apcata.2012.09.057
ER  - 
@article{
author = "Maslovara, Slađana Lj. and Miulović, Snežana M. and Marčeta Kaninski, Milica and Tasić, Gvozden S. and Nikolić, Vladimir M.",
year = "2013",
abstract = "Alkaline water electrolysis is one of the easiest methods for hydrogen production. Simplicity and usefulness are the two main features that characterize this method. The challenges for widespread use of water electrolysis are to reduce energy consumption, cost, durability and safety. In our investigation we obtain the results about energy efficiency system with the addition of ionic activators (i.a.) - Co(en)(3)Cl-3, Na2MoO4 and ZnCl2, in 6 M KOH solution. The requirements per mass unit of hydrogen produced are reduced up to 15% just using simplified process of the in situ activation with d-metals. The most important result of this study is that obtained deposit exhibit long-term stability at elevated temperatures and high current densities, like industrial conditions. (C) 2012 Elsevier B.V. All rights reserved.",
journal = "Applied Catalysis. A: General",
title = "Energy consumption of the electrolytic hydrogen production using Zn-Co-Mo based activators-Part I",
volume = "451",
pages = "216-219",
doi = "10.1016/j.apcata.2012.09.057"
}
Maslovara, S. Lj., Miulović, S. M., Marčeta Kaninski, M., Tasić, G. S.,& Nikolić, V. M.. (2013). Energy consumption of the electrolytic hydrogen production using Zn-Co-Mo based activators-Part I. in Applied Catalysis. A: General, 451, 216-219.
https://doi.org/10.1016/j.apcata.2012.09.057
Maslovara SL, Miulović SM, Marčeta Kaninski M, Tasić GS, Nikolić VM. Energy consumption of the electrolytic hydrogen production using Zn-Co-Mo based activators-Part I. in Applied Catalysis. A: General. 2013;451:216-219.
doi:10.1016/j.apcata.2012.09.057 .
Maslovara, Slađana Lj., Miulović, Snežana M., Marčeta Kaninski, Milica, Tasić, Gvozden S., Nikolić, Vladimir M., "Energy consumption of the electrolytic hydrogen production using Zn-Co-Mo based activators-Part I" in Applied Catalysis. A: General, 451 (2013):216-219,
https://doi.org/10.1016/j.apcata.2012.09.057 . .
9
8
10

Influence of electrodeposition parameters of Ni-W on Ni cathode for alkaline water electrolyser

Tasić, Gvozden S.; Lacnjevac, Uros; Tasić, Marijana M.; Marčeta Kaninski, Milica; Nikolić, Vladimir M.; Žugić, Dragana; Jovic, Vladimir D.

(2013)

TY  - JOUR
AU  - Tasić, Gvozden S.
AU  - Lacnjevac, Uros
AU  - Tasić, Marijana M.
AU  - Marčeta Kaninski, Milica
AU  - Nikolić, Vladimir M.
AU  - Žugić, Dragana
AU  - Jovic, Vladimir D.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5510
AB  - In this study, different Ni-W coatings, obtained by cheap and technologically simple electrodeposition method, were examined as potential electrocatalysts for the hydrogen evolution reaction (HER). All electrodepositions were done on a Ni mesh substrate from ammoniacal-citrate bath containing different concentrations of Na2WO4. The influence of deposition parameters, such as deposition current density, pH and composition of ammoniacal-citrate bath on electrocatalytic activity of obtained Ni-W coatings toward HER was examined by polarization curve measurements in 6 M KOH at room temperature. The morphology and tungsten content of the Ni-W coatings were investigated by means of SEM and EDS analysis. All investigated electrodes have shown high electrocatalytic activity for the HER. The samples obtained at higher deposition current densities had the lowest overvoltage for the HER. It has been shown that the plating bath pH value is very important parameter in obtaining active coatings. Results of the analysis of polarization curves, morphology of deposited Ni-W coatings and the content of tungsten in the coatings, indicate that the surface roughness of the coatings is responsible for their catalytic activity towards HER. Copyright (c) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - Influence of electrodeposition parameters of Ni-W on Ni cathode for alkaline water electrolyser
VL  - 38
IS  - 11
SP  - 4291
EP  - 4297
DO  - 10.1016/j.ijhydene.2013.01.193
ER  - 
@article{
author = "Tasić, Gvozden S. and Lacnjevac, Uros and Tasić, Marijana M. and Marčeta Kaninski, Milica and Nikolić, Vladimir M. and Žugić, Dragana and Jovic, Vladimir D.",
year = "2013",
abstract = "In this study, different Ni-W coatings, obtained by cheap and technologically simple electrodeposition method, were examined as potential electrocatalysts for the hydrogen evolution reaction (HER). All electrodepositions were done on a Ni mesh substrate from ammoniacal-citrate bath containing different concentrations of Na2WO4. The influence of deposition parameters, such as deposition current density, pH and composition of ammoniacal-citrate bath on electrocatalytic activity of obtained Ni-W coatings toward HER was examined by polarization curve measurements in 6 M KOH at room temperature. The morphology and tungsten content of the Ni-W coatings were investigated by means of SEM and EDS analysis. All investigated electrodes have shown high electrocatalytic activity for the HER. The samples obtained at higher deposition current densities had the lowest overvoltage for the HER. It has been shown that the plating bath pH value is very important parameter in obtaining active coatings. Results of the analysis of polarization curves, morphology of deposited Ni-W coatings and the content of tungsten in the coatings, indicate that the surface roughness of the coatings is responsible for their catalytic activity towards HER. Copyright (c) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "Influence of electrodeposition parameters of Ni-W on Ni cathode for alkaline water electrolyser",
volume = "38",
number = "11",
pages = "4291-4297",
doi = "10.1016/j.ijhydene.2013.01.193"
}
Tasić, G. S., Lacnjevac, U., Tasić, M. M., Marčeta Kaninski, M., Nikolić, V. M., Žugić, D.,& Jovic, V. D.. (2013). Influence of electrodeposition parameters of Ni-W on Ni cathode for alkaline water electrolyser. in International Journal of Hydrogen Energy, 38(11), 4291-4297.
https://doi.org/10.1016/j.ijhydene.2013.01.193
Tasić GS, Lacnjevac U, Tasić MM, Marčeta Kaninski M, Nikolić VM, Žugić D, Jovic VD. Influence of electrodeposition parameters of Ni-W on Ni cathode for alkaline water electrolyser. in International Journal of Hydrogen Energy. 2013;38(11):4291-4297.
doi:10.1016/j.ijhydene.2013.01.193 .
Tasić, Gvozden S., Lacnjevac, Uros, Tasić, Marijana M., Marčeta Kaninski, Milica, Nikolić, Vladimir M., Žugić, Dragana, Jovic, Vladimir D., "Influence of electrodeposition parameters of Ni-W on Ni cathode for alkaline water electrolyser" in International Journal of Hydrogen Energy, 38, no. 11 (2013):4291-4297,
https://doi.org/10.1016/j.ijhydene.2013.01.193 . .
49
40
45

Novel ternary Ni-Co-Mo based ionic activator for efficient alkaline water electrolysis

Maslovara, Slađana Lj.; Marčeta Kaninski, Milica; Perović, Ivana M.; Laušević, Petar; Tasić, Gvozden S.; Radak, Bojan; Nikolić, Vladimir M.

(2013)

TY  - JOUR
AU  - Maslovara, Slađana Lj.
AU  - Marčeta Kaninski, Milica
AU  - Perović, Ivana M.
AU  - Laušević, Petar
AU  - Tasić, Gvozden S.
AU  - Radak, Bojan
AU  - Nikolić, Vladimir M.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5779
AB  - In this manuscript we have presented the results of the use of ternary ionic activator in the alkaline water electrolysis. Novel Ni-Co-Mo based ionic activator was added in-situ to standard electrolyte. Energy consumption of the alkaline electrolyzer was determined at different current densities and elevated temperatures. Energy saving was higher at higher temperatures and higher operating current densities. Results showed that the reduction in energy consumption using Ni-Co-Mo based ionic activator was about 17%, compared to standard 6 M KOH. SEM morphology investigation proved the deposition of nickel, cobalt and molybdenum species on the cathode, greatly increasing the active surface area. UV/VIS spectroscopy was used to monitor changes in the electrolyte composition during the electrolytic process, and results show the decrease in the ionic activator concentration in the 6 M KOH. Our experiments point out a strong possibility of the usage of these ternary ionic activators in industrial alkaline electrolyzers. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - Novel ternary Ni-Co-Mo based ionic activator for efficient alkaline water electrolysis
VL  - 38
IS  - 36
SP  - 15928
EP  - 15933
DO  - 10.1016/j.ijhydene.2013.10.039
ER  - 
@article{
author = "Maslovara, Slađana Lj. and Marčeta Kaninski, Milica and Perović, Ivana M. and Laušević, Petar and Tasić, Gvozden S. and Radak, Bojan and Nikolić, Vladimir M.",
year = "2013",
abstract = "In this manuscript we have presented the results of the use of ternary ionic activator in the alkaline water electrolysis. Novel Ni-Co-Mo based ionic activator was added in-situ to standard electrolyte. Energy consumption of the alkaline electrolyzer was determined at different current densities and elevated temperatures. Energy saving was higher at higher temperatures and higher operating current densities. Results showed that the reduction in energy consumption using Ni-Co-Mo based ionic activator was about 17%, compared to standard 6 M KOH. SEM morphology investigation proved the deposition of nickel, cobalt and molybdenum species on the cathode, greatly increasing the active surface area. UV/VIS spectroscopy was used to monitor changes in the electrolyte composition during the electrolytic process, and results show the decrease in the ionic activator concentration in the 6 M KOH. Our experiments point out a strong possibility of the usage of these ternary ionic activators in industrial alkaline electrolyzers. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "Novel ternary Ni-Co-Mo based ionic activator for efficient alkaline water electrolysis",
volume = "38",
number = "36",
pages = "15928-15933",
doi = "10.1016/j.ijhydene.2013.10.039"
}
Maslovara, S. Lj., Marčeta Kaninski, M., Perović, I. M., Laušević, P., Tasić, G. S., Radak, B.,& Nikolić, V. M.. (2013). Novel ternary Ni-Co-Mo based ionic activator for efficient alkaline water electrolysis. in International Journal of Hydrogen Energy, 38(36), 15928-15933.
https://doi.org/10.1016/j.ijhydene.2013.10.039
Maslovara SL, Marčeta Kaninski M, Perović IM, Laušević P, Tasić GS, Radak B, Nikolić VM. Novel ternary Ni-Co-Mo based ionic activator for efficient alkaline water electrolysis. in International Journal of Hydrogen Energy. 2013;38(36):15928-15933.
doi:10.1016/j.ijhydene.2013.10.039 .
Maslovara, Slađana Lj., Marčeta Kaninski, Milica, Perović, Ivana M., Laušević, Petar, Tasić, Gvozden S., Radak, Bojan, Nikolić, Vladimir M., "Novel ternary Ni-Co-Mo based ionic activator for efficient alkaline water electrolysis" in International Journal of Hydrogen Energy, 38, no. 36 (2013):15928-15933,
https://doi.org/10.1016/j.ijhydene.2013.10.039 . .
15
10
15

Electrocatalytic activity of ZnCoMo based ionic activators for alkaline hydrogen evolution-Part II

Miulović, Snežana M.; Maslovara, Slađana Lj.; Perović, Ivana M.; Nikolić, Vladimir M.; Marčeta Kaninski, Milica

(2013)

TY  - JOUR
AU  - Miulović, Snežana M.
AU  - Maslovara, Slađana Lj.
AU  - Perović, Ivana M.
AU  - Nikolić, Vladimir M.
AU  - Marčeta Kaninski, Milica
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5315
AB  - Nickel electrodes are widely used in industrial water electrolysis cells for electrochemical production of hydrogen. To avoid extensive deactivation problems and enhance the efficiency of the electrolyser cathode, in this work in situ activation is proposed using ionic activator (i.a.) based on combination of three d-metals: Zn, Co and Mo. Polarization curves, obtained at different temperatures (303-343 K), reveal that the addition of ZnCoMo based La. did not change reaction mechanism when compared to the HER mechanism on nickel cathode in standard electrolyte. The electrochemical impedance spectroscopy measurements were employed to further investigate the origin of obtained electrocatalytic effect on the HER. The morphology of obtained coatings was examined by scanning electron microscopy. (C) 2012 Elsevier B.V. All rights reserved.
T2  - Applied Catalysis. A: General
T1  - Electrocatalytic activity of ZnCoMo based ionic activators for alkaline hydrogen evolution-Part II
VL  - 451
SP  - 220
EP  - 226
DO  - 10.1016/j.apcata.2012.09.056
ER  - 
@article{
author = "Miulović, Snežana M. and Maslovara, Slađana Lj. and Perović, Ivana M. and Nikolić, Vladimir M. and Marčeta Kaninski, Milica",
year = "2013",
abstract = "Nickel electrodes are widely used in industrial water electrolysis cells for electrochemical production of hydrogen. To avoid extensive deactivation problems and enhance the efficiency of the electrolyser cathode, in this work in situ activation is proposed using ionic activator (i.a.) based on combination of three d-metals: Zn, Co and Mo. Polarization curves, obtained at different temperatures (303-343 K), reveal that the addition of ZnCoMo based La. did not change reaction mechanism when compared to the HER mechanism on nickel cathode in standard electrolyte. The electrochemical impedance spectroscopy measurements were employed to further investigate the origin of obtained electrocatalytic effect on the HER. The morphology of obtained coatings was examined by scanning electron microscopy. (C) 2012 Elsevier B.V. All rights reserved.",
journal = "Applied Catalysis. A: General",
title = "Electrocatalytic activity of ZnCoMo based ionic activators for alkaline hydrogen evolution-Part II",
volume = "451",
pages = "220-226",
doi = "10.1016/j.apcata.2012.09.056"
}
Miulović, S. M., Maslovara, S. Lj., Perović, I. M., Nikolić, V. M.,& Marčeta Kaninski, M.. (2013). Electrocatalytic activity of ZnCoMo based ionic activators for alkaline hydrogen evolution-Part II. in Applied Catalysis. A: General, 451, 220-226.
https://doi.org/10.1016/j.apcata.2012.09.056
Miulović SM, Maslovara SL, Perović IM, Nikolić VM, Marčeta Kaninski M. Electrocatalytic activity of ZnCoMo based ionic activators for alkaline hydrogen evolution-Part II. in Applied Catalysis. A: General. 2013;451:220-226.
doi:10.1016/j.apcata.2012.09.056 .
Miulović, Snežana M., Maslovara, Slađana Lj., Perović, Ivana M., Nikolić, Vladimir M., Marčeta Kaninski, Milica, "Electrocatalytic activity of ZnCoMo based ionic activators for alkaline hydrogen evolution-Part II" in Applied Catalysis. A: General, 451 (2013):220-226,
https://doi.org/10.1016/j.apcata.2012.09.056 . .
22
20
21

Enhanced Performance of the Solid Alkaline Fuel Cell Using PVA-KOH Membrane

Žugić, Dragana; Perović, Ivana M.; Nikolić, Vladimir M.; Maslovara, Slađana Lj.; Marčeta Kaninski, Milica

(2013)

TY  - JOUR
AU  - Žugić, Dragana
AU  - Perović, Ivana M.
AU  - Nikolić, Vladimir M.
AU  - Maslovara, Slađana Lj.
AU  - Marčeta Kaninski, Milica
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5377
AB  - Poly(vinyl alcohol) (PVA) is a polyhydroxy polymer, which is very common in practical applications because of its easy preparation and biodegradability. In this work, the alkaline solid polymer electrolyte membrane, based on potassium hydroxide doped PVA, was proposed for the fuel cell applications, aiming at a new cost-effective, easy preparing and chemical stable alkaline anion exchange membrane using physical cross-linking procedure. The membrane electrode assemblies (MEAs) using KOH doped PVA as membranes, were prepared with commercial platinum catalyst. We have investigated the performance of the solid alkaline fuel cell (SAFC) and results are presented to show current-voltage characteristics.
T2  - International Journal of Electrochemical Science
T1  - Enhanced Performance of the Solid Alkaline Fuel Cell Using PVA-KOH Membrane
VL  - 8
IS  - 1
SP  - 949
EP  - 957
UR  - https://hdl.handle.net/21.15107/rcub_vinar_5377
ER  - 
@article{
author = "Žugić, Dragana and Perović, Ivana M. and Nikolić, Vladimir M. and Maslovara, Slađana Lj. and Marčeta Kaninski, Milica",
year = "2013",
abstract = "Poly(vinyl alcohol) (PVA) is a polyhydroxy polymer, which is very common in practical applications because of its easy preparation and biodegradability. In this work, the alkaline solid polymer electrolyte membrane, based on potassium hydroxide doped PVA, was proposed for the fuel cell applications, aiming at a new cost-effective, easy preparing and chemical stable alkaline anion exchange membrane using physical cross-linking procedure. The membrane electrode assemblies (MEAs) using KOH doped PVA as membranes, were prepared with commercial platinum catalyst. We have investigated the performance of the solid alkaline fuel cell (SAFC) and results are presented to show current-voltage characteristics.",
journal = "International Journal of Electrochemical Science",
title = "Enhanced Performance of the Solid Alkaline Fuel Cell Using PVA-KOH Membrane",
volume = "8",
number = "1",
pages = "949-957",
url = "https://hdl.handle.net/21.15107/rcub_vinar_5377"
}
Žugić, D., Perović, I. M., Nikolić, V. M., Maslovara, S. Lj.,& Marčeta Kaninski, M.. (2013). Enhanced Performance of the Solid Alkaline Fuel Cell Using PVA-KOH Membrane. in International Journal of Electrochemical Science, 8(1), 949-957.
https://hdl.handle.net/21.15107/rcub_vinar_5377
Žugić D, Perović IM, Nikolić VM, Maslovara SL, Marčeta Kaninski M. Enhanced Performance of the Solid Alkaline Fuel Cell Using PVA-KOH Membrane. in International Journal of Electrochemical Science. 2013;8(1):949-957.
https://hdl.handle.net/21.15107/rcub_vinar_5377 .
Žugić, Dragana, Perović, Ivana M., Nikolić, Vladimir M., Maslovara, Slađana Lj., Marčeta Kaninski, Milica, "Enhanced Performance of the Solid Alkaline Fuel Cell Using PVA-KOH Membrane" in International Journal of Electrochemical Science, 8, no. 1 (2013):949-957,
https://hdl.handle.net/21.15107/rcub_vinar_5377 .
21

Investigation of tungsten carbide supported Pd or Pt as anode catalysts for PEM fuel cells

Nikolić, Vladimir M.; Žugić, Dragana; Perović, Ivana M.; Šaponjić, Aleksandra; Babić, Biljana M.; Pašti, Igor A.; Marčeta Kaninski, Milica

(2013)

TY  - JOUR
AU  - Nikolić, Vladimir M.
AU  - Žugić, Dragana
AU  - Perović, Ivana M.
AU  - Šaponjić, Aleksandra
AU  - Babić, Biljana M.
AU  - Pašti, Igor A.
AU  - Marčeta Kaninski, Milica
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5665
AB  - In this contribution, we present results of electrochemical characterization of prepared tungsten carbide supported palladium and platinum and Vulcan XC-72 supported palladium. These catalysts were employed as anode catalysts in PEMFC and results are compared to commercial platinum catalyst. Platinum seems to be irreplaceable as a proton exchange membrane fuel cell (PEMFC) catalyst for both the anode and the cathode, yet the high price and limited natural resources are holding back the commercialization of the PEMFCs. Tungsten carbide is recognized as promising catalyst support having the best conductivity among interstitial carbides. Higher natural resources and significantly lower price make palladium good candidate for replacement of the platinum catalyst. The presented results show that all prepared catalysts are very active for the hydrogen oxidation reaction. Linear sweep voltammetry curves of Pd/C and Pd/WC show existence of peaks at 0.07 V vs. RHE, which is assigned to absorbed hydrogen. H-2 vertical bar Pd/WC vertical bar Nafion117 vertical bar Pt/C vertical bar O-2 fuel cell has almost the same efficiency and similar power output as commercial platinum catalyst. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - Investigation of tungsten carbide supported Pd or Pt as anode catalysts for PEM fuel cells
VL  - 38
IS  - 26
SP  - 11340
EP  - 11345
DO  - 10.1016/j.ijhydene.2013.06.094
ER  - 
@article{
author = "Nikolić, Vladimir M. and Žugić, Dragana and Perović, Ivana M. and Šaponjić, Aleksandra and Babić, Biljana M. and Pašti, Igor A. and Marčeta Kaninski, Milica",
year = "2013",
abstract = "In this contribution, we present results of electrochemical characterization of prepared tungsten carbide supported palladium and platinum and Vulcan XC-72 supported palladium. These catalysts were employed as anode catalysts in PEMFC and results are compared to commercial platinum catalyst. Platinum seems to be irreplaceable as a proton exchange membrane fuel cell (PEMFC) catalyst for both the anode and the cathode, yet the high price and limited natural resources are holding back the commercialization of the PEMFCs. Tungsten carbide is recognized as promising catalyst support having the best conductivity among interstitial carbides. Higher natural resources and significantly lower price make palladium good candidate for replacement of the platinum catalyst. The presented results show that all prepared catalysts are very active for the hydrogen oxidation reaction. Linear sweep voltammetry curves of Pd/C and Pd/WC show existence of peaks at 0.07 V vs. RHE, which is assigned to absorbed hydrogen. H-2 vertical bar Pd/WC vertical bar Nafion117 vertical bar Pt/C vertical bar O-2 fuel cell has almost the same efficiency and similar power output as commercial platinum catalyst. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "Investigation of tungsten carbide supported Pd or Pt as anode catalysts for PEM fuel cells",
volume = "38",
number = "26",
pages = "11340-11345",
doi = "10.1016/j.ijhydene.2013.06.094"
}
Nikolić, V. M., Žugić, D., Perović, I. M., Šaponjić, A., Babić, B. M., Pašti, I. A.,& Marčeta Kaninski, M.. (2013). Investigation of tungsten carbide supported Pd or Pt as anode catalysts for PEM fuel cells. in International Journal of Hydrogen Energy, 38(26), 11340-11345.
https://doi.org/10.1016/j.ijhydene.2013.06.094
Nikolić VM, Žugić D, Perović IM, Šaponjić A, Babić BM, Pašti IA, Marčeta Kaninski M. Investigation of tungsten carbide supported Pd or Pt as anode catalysts for PEM fuel cells. in International Journal of Hydrogen Energy. 2013;38(26):11340-11345.
doi:10.1016/j.ijhydene.2013.06.094 .
Nikolić, Vladimir M., Žugić, Dragana, Perović, Ivana M., Šaponjić, Aleksandra, Babić, Biljana M., Pašti, Igor A., Marčeta Kaninski, Milica, "Investigation of tungsten carbide supported Pd or Pt as anode catalysts for PEM fuel cells" in International Journal of Hydrogen Energy, 38, no. 26 (2013):11340-11345,
https://doi.org/10.1016/j.ijhydene.2013.06.094 . .
1
27
23
26

Is platinum necessary for efficient hydrogen evolution? - DFT study of metal monolayers on tungsten carbide

Vasić Anićijević, Dragana D.; Nikolić, Vladimir M.; Marčeta Kaninski, Milica; Pašti, Igor A.

(2013)

TY  - JOUR
AU  - Vasić Anićijević, Dragana D.
AU  - Nikolić, Vladimir M.
AU  - Marčeta Kaninski, Milica
AU  - Pašti, Igor A.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5780
AB  - In this work WC-supported metal monolayers (Cu, Ru, Rh, Pd, Ag, Ir, Pt and Au) are investigated using Density Functional Theory in order to establish general trends regarding monolayer stability, electronic structure and reactivity. Using calculated hydrogen metal bond energies and available data on the exchange current densities (j(0)) for hydrogen evolution reaction (HER) volcano-type curve is obtained enabling prediction of HER j(0) for the entire series of M-ML/WC systems not considered so far as HER electrocatalysts. Among investigated surfaces, Cu-ML/WC(0001) and Rh-ML/WC(0001) are identified as promising HER electrocatalysts with (i) HER exchange current density matching the one of Pt and (ii) stability in electrochemical environment under HER conditions. Provided results point to a general conclusion that Pt might not be necessary for efficient catalysis of hydrogen electrode reactions superior catalysts can be obtained by rational design approach with suitable choice of overlayer/support system not involving Pt at all. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
T2  - International Journal of Hydrogen Energy
T1  - Is platinum necessary for efficient hydrogen evolution? - DFT study of metal monolayers on tungsten carbide
VL  - 38
IS  - 36
SP  - 16071
EP  - 16079
DO  - 10.1016/j.ijhydene.2013.09.079
ER  - 
@article{
author = "Vasić Anićijević, Dragana D. and Nikolić, Vladimir M. and Marčeta Kaninski, Milica and Pašti, Igor A.",
year = "2013",
abstract = "In this work WC-supported metal monolayers (Cu, Ru, Rh, Pd, Ag, Ir, Pt and Au) are investigated using Density Functional Theory in order to establish general trends regarding monolayer stability, electronic structure and reactivity. Using calculated hydrogen metal bond energies and available data on the exchange current densities (j(0)) for hydrogen evolution reaction (HER) volcano-type curve is obtained enabling prediction of HER j(0) for the entire series of M-ML/WC systems not considered so far as HER electrocatalysts. Among investigated surfaces, Cu-ML/WC(0001) and Rh-ML/WC(0001) are identified as promising HER electrocatalysts with (i) HER exchange current density matching the one of Pt and (ii) stability in electrochemical environment under HER conditions. Provided results point to a general conclusion that Pt might not be necessary for efficient catalysis of hydrogen electrode reactions superior catalysts can be obtained by rational design approach with suitable choice of overlayer/support system not involving Pt at all. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.",
journal = "International Journal of Hydrogen Energy",
title = "Is platinum necessary for efficient hydrogen evolution? - DFT study of metal monolayers on tungsten carbide",
volume = "38",
number = "36",
pages = "16071-16079",
doi = "10.1016/j.ijhydene.2013.09.079"
}
Vasić Anićijević, D. D., Nikolić, V. M., Marčeta Kaninski, M.,& Pašti, I. A.. (2013). Is platinum necessary for efficient hydrogen evolution? - DFT study of metal monolayers on tungsten carbide. in International Journal of Hydrogen Energy, 38(36), 16071-16079.
https://doi.org/10.1016/j.ijhydene.2013.09.079
Vasić Anićijević DD, Nikolić VM, Marčeta Kaninski M, Pašti IA. Is platinum necessary for efficient hydrogen evolution? - DFT study of metal monolayers on tungsten carbide. in International Journal of Hydrogen Energy. 2013;38(36):16071-16079.
doi:10.1016/j.ijhydene.2013.09.079 .
Vasić Anićijević, Dragana D., Nikolić, Vladimir M., Marčeta Kaninski, Milica, Pašti, Igor A., "Is platinum necessary for efficient hydrogen evolution? - DFT study of metal monolayers on tungsten carbide" in International Journal of Hydrogen Energy, 38, no. 36 (2013):16071-16079,
https://doi.org/10.1016/j.ijhydene.2013.09.079 . .
59
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Kopolimeri dobijeni kalemljenjem vinilnih monomera na skrob - uticaj amina na sintezu i procesi degradacije u životnoj sredini

Nikolić, Vladimir M.

(Универзитет у Београду, Хемијски факултет, 2013)

TY  - THES
AU  - Nikolić, Vladimir M.
PY  - 2013
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=906
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:7424/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=44745743
UR  - http://nardus.mpn.gov.rs/123456789/3478
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7269
AB  - U prvom delu ove doktorske disertacije sintetisani su kalemljeni kopolimeri polistirena i skroba emulzionom polimerizacijom u vodi uz korišćenje natrijum-laurilsulfata kao emulgatora. Ispitivan je uticaj različitih amina kao aktivatora polimerizacije na stepen kalemljenja polistirena na skrob, a ispitivanje ovog uticaj do sada nije zabeleţeno u literaturi. Promenom reakcione temperature, koncentracije monomera i inicijatora, pH vrednosti, vremena i količine aktivatora teţilo se dobijanju maksimalnih vrednosti stepena kalemljenja, a maksimalna dobijena vrednost iznosila je 32,55 %, što je za oko 8,5 % veće od najviše literaturne vrednosti.U drugom delu ovog rada sintetisani su kalemljeni kopolimeri poli(metakrilne kiseline) i skroba u vodi kao rastvaraču uz korišćenje različitih amina kao aktivatora polimerizacije (ovaj uticaj do sada nije ispitan u literaturi), sa ciljem dobijanja što većeg stepena kalemljenja. Da bi se dobile maksimalne vrednosti za stepen kalemljenja, praćen je uticaj promene reakcione temperature, reakcionog vremena, koncentracije monomera, količine inicijatora, količine aktivatora i pH vrednosti. Dobijene vrednosti za stepen kalemljenja kod kalemljenih kopolimera skroba i poli(metakrilne kiseline) su najveće do sada publikovane u literaturi. Maksimalna vrednost stepena kalemljenja iznosila je 40,92 %, što je za oko 10 % veće od najviše literaturne vrednosti.Dobijeni kopolimeri ispitivani su infracrvenom spektroskopijom sa Furijevom transformacijom i skenirajućom elektronskom mikroskopijom.U trećem delu doktorske teze praćeni su procesi degradacije dobijenih kopolimera u ţivotnoj sredini. Degradacija kopolimera u zemljištu, tj. u tri različita tipa zemljišta, trajala je 6 meseci, a za ovu namenu korišćeni su sledeći tipovi zemljišta: zemljište bogato humusom, zemljište za uzgajanje kaktusa i zemljište za uzgajanjeorhideja. TakoĎe, ispitivana je degradcija kalemljenih kopolimera u veštačkoj otpadnoj vodi, dobijenoj iz reke Save. Prilikom degradacije u vodi korišćen je kontinualni protočni sistem. Gubitak mase kopolimera tokom procesa degradacije korišćen je kod obe metode za odreĎivanje vrednosti stepena degradacije. Degradacija kalemljenih kopolimera skroba i poli(metakrilne kiseline) u zemljištu i degradacija obe vrste kopolimera u veštačkoj otpadnoj vodi do sada nije zabeleţena u literaturi.Ispitivanjem je utvrĎeno da je degradacija svih uzoraka kopolimera znatno brţa u veštačkoj otpadnoj vodi, gde ceo proces degradacije traje manje od mesec dana, nego u zemljištu. Rezultati degradacije u zemljištu pokazuju da je degradacija najbrţa u zemljištu za uzgajanje kaktusa (kod kalemljenih kopolimera polistirena i skroba), a kod kalemljenih kopolimera skroba i poli(metakrilne kiseline) u zemljištu za uzgajanje orhideja. Statističkom obradom podataka, utvrĎeno je postojanje značajne korelacije izmeĎu stepena degradacije i stepena kalemljenja kod kalemljenih kopolimera skroba i polistirena, kao i udeo skroba u kopolimerima koji je neophodan da bi došlo do biodegradacije, kao i udeo polistirena u kopolimerima koji bi doveo do sprečavanja biodegradacije.
AB  - In the first part of this doctoral dissertation graft copolymers of polystyrene and starch were synthesized by emulsion polymerization in water with sodium dodecyl sulfate as an emulsifier. Influence of different amines, as activators of polymerization, on the percentage of grafting of polystyrene on starch was investigated and investigation of this influence has not been noted in the literature. Changes in reaction temperature, concentration of the monomer and initiator, pH value, time and amount of activator strive to obtain maximum value of percentage of grafting and maximal obtained value was 32.55 % which was about 8.5 % higher than maximal literature value.In the second part of this study, graft copolymers of poly(methacrylic acid) and starch were synthesized in aqueous media using different amines as activator of polymerization (there is no literature data about this influence) with the aim to obtaining a higher percentage of grafting. Influence of temperature, reaction time, monomer concentration, amount of initiator, amount of activator and pH value were monitored to obtain maximum values for percentage of grafting. Obtained values for percentage of grafting of starch and poly(methacrylic acid) grafted copolymers were the highest ever obtained in literature. The maximum value for percentage of grafting was 40.92 % which was about 10 % higher than maximal literatue value.The obtained copolymers were characterized by Fourier transformed infrared spectroscopy and by scanning electron microscopy.At the third part of this doctoral dissertation, the degradation processes of copolymers were monitored in environment. Degradation of copolymers in soil, i.e. inthree different type of soil, lasted for six months and for this study the following soil types were used: soil rich in humus, soil for cactus growing and soil for orchid growing. Also, degradation of graft copolymers in artificial wastewater obtaines from River Sava was monitored. During degradation in water, the continuous flow system was used. Mass loss of copolymers during degradation was used in both methods for obtaining values for measuring the degree of degradation. Degradation of poly(methacrylic acid) and starch grafted copolymers in soils and degradation of both types of copolymers in the artificial waste water have not been noted in the literature.Investigation has shown that the degradation of all samples of copolymers in artificial waste water was much faster, where all degradation processes lasted less than a month, than in soil. The results of degradation in soil show that degradation was fastest in soil for cactus growing (for grafted copolymers of polystyrene and starch) and for grafted copolymers of poly(methacrylic acid) and starch in soil for orchid growing. Statistical analysis of data show excellent correlation between degree of degradation and percentage of grafting for graft copolymers of polystyrene and starch and share of starch in copolymers which is necessary to biodegradation started and share of polystyrene in copolymers that prevented biodegradation.
PB  - Универзитет у Београду, Хемијски факултет
T2  - Универзитет у Београду
T1  - Kopolimeri dobijeni kalemljenjem vinilnih monomera na skrob - uticaj amina na sintezu i procesi degradacije u životnoj sredini
T1  - Copolumers obtained by grafting of vinyl monomers on starch - influence of amines on synthesis and degradation processes in environment
UR  - https://hdl.handle.net/21.15107/rcub_nardus_3478
ER  - 
@phdthesis{
author = "Nikolić, Vladimir M.",
year = "2013",
abstract = "U prvom delu ove doktorske disertacije sintetisani su kalemljeni kopolimeri polistirena i skroba emulzionom polimerizacijom u vodi uz korišćenje natrijum-laurilsulfata kao emulgatora. Ispitivan je uticaj različitih amina kao aktivatora polimerizacije na stepen kalemljenja polistirena na skrob, a ispitivanje ovog uticaj do sada nije zabeleţeno u literaturi. Promenom reakcione temperature, koncentracije monomera i inicijatora, pH vrednosti, vremena i količine aktivatora teţilo se dobijanju maksimalnih vrednosti stepena kalemljenja, a maksimalna dobijena vrednost iznosila je 32,55 %, što je za oko 8,5 % veće od najviše literaturne vrednosti.U drugom delu ovog rada sintetisani su kalemljeni kopolimeri poli(metakrilne kiseline) i skroba u vodi kao rastvaraču uz korišćenje različitih amina kao aktivatora polimerizacije (ovaj uticaj do sada nije ispitan u literaturi), sa ciljem dobijanja što većeg stepena kalemljenja. Da bi se dobile maksimalne vrednosti za stepen kalemljenja, praćen je uticaj promene reakcione temperature, reakcionog vremena, koncentracije monomera, količine inicijatora, količine aktivatora i pH vrednosti. Dobijene vrednosti za stepen kalemljenja kod kalemljenih kopolimera skroba i poli(metakrilne kiseline) su najveće do sada publikovane u literaturi. Maksimalna vrednost stepena kalemljenja iznosila je 40,92 %, što je za oko 10 % veće od najviše literaturne vrednosti.Dobijeni kopolimeri ispitivani su infracrvenom spektroskopijom sa Furijevom transformacijom i skenirajućom elektronskom mikroskopijom.U trećem delu doktorske teze praćeni su procesi degradacije dobijenih kopolimera u ţivotnoj sredini. Degradacija kopolimera u zemljištu, tj. u tri različita tipa zemljišta, trajala je 6 meseci, a za ovu namenu korišćeni su sledeći tipovi zemljišta: zemljište bogato humusom, zemljište za uzgajanje kaktusa i zemljište za uzgajanjeorhideja. TakoĎe, ispitivana je degradcija kalemljenih kopolimera u veštačkoj otpadnoj vodi, dobijenoj iz reke Save. Prilikom degradacije u vodi korišćen je kontinualni protočni sistem. Gubitak mase kopolimera tokom procesa degradacije korišćen je kod obe metode za odreĎivanje vrednosti stepena degradacije. Degradacija kalemljenih kopolimera skroba i poli(metakrilne kiseline) u zemljištu i degradacija obe vrste kopolimera u veštačkoj otpadnoj vodi do sada nije zabeleţena u literaturi.Ispitivanjem je utvrĎeno da je degradacija svih uzoraka kopolimera znatno brţa u veštačkoj otpadnoj vodi, gde ceo proces degradacije traje manje od mesec dana, nego u zemljištu. Rezultati degradacije u zemljištu pokazuju da je degradacija najbrţa u zemljištu za uzgajanje kaktusa (kod kalemljenih kopolimera polistirena i skroba), a kod kalemljenih kopolimera skroba i poli(metakrilne kiseline) u zemljištu za uzgajanje orhideja. Statističkom obradom podataka, utvrĎeno je postojanje značajne korelacije izmeĎu stepena degradacije i stepena kalemljenja kod kalemljenih kopolimera skroba i polistirena, kao i udeo skroba u kopolimerima koji je neophodan da bi došlo do biodegradacije, kao i udeo polistirena u kopolimerima koji bi doveo do sprečavanja biodegradacije., In the first part of this doctoral dissertation graft copolymers of polystyrene and starch were synthesized by emulsion polymerization in water with sodium dodecyl sulfate as an emulsifier. Influence of different amines, as activators of polymerization, on the percentage of grafting of polystyrene on starch was investigated and investigation of this influence has not been noted in the literature. Changes in reaction temperature, concentration of the monomer and initiator, pH value, time and amount of activator strive to obtain maximum value of percentage of grafting and maximal obtained value was 32.55 % which was about 8.5 % higher than maximal literature value.In the second part of this study, graft copolymers of poly(methacrylic acid) and starch were synthesized in aqueous media using different amines as activator of polymerization (there is no literature data about this influence) with the aim to obtaining a higher percentage of grafting. Influence of temperature, reaction time, monomer concentration, amount of initiator, amount of activator and pH value were monitored to obtain maximum values for percentage of grafting. Obtained values for percentage of grafting of starch and poly(methacrylic acid) grafted copolymers were the highest ever obtained in literature. The maximum value for percentage of grafting was 40.92 % which was about 10 % higher than maximal literatue value.The obtained copolymers were characterized by Fourier transformed infrared spectroscopy and by scanning electron microscopy.At the third part of this doctoral dissertation, the degradation processes of copolymers were monitored in environment. Degradation of copolymers in soil, i.e. inthree different type of soil, lasted for six months and for this study the following soil types were used: soil rich in humus, soil for cactus growing and soil for orchid growing. Also, degradation of graft copolymers in artificial wastewater obtaines from River Sava was monitored. During degradation in water, the continuous flow system was used. Mass loss of copolymers during degradation was used in both methods for obtaining values for measuring the degree of degradation. Degradation of poly(methacrylic acid) and starch grafted copolymers in soils and degradation of both types of copolymers in the artificial waste water have not been noted in the literature.Investigation has shown that the degradation of all samples of copolymers in artificial waste water was much faster, where all degradation processes lasted less than a month, than in soil. The results of degradation in soil show that degradation was fastest in soil for cactus growing (for grafted copolymers of polystyrene and starch) and for grafted copolymers of poly(methacrylic acid) and starch in soil for orchid growing. Statistical analysis of data show excellent correlation between degree of degradation and percentage of grafting for graft copolymers of polystyrene and starch and share of starch in copolymers which is necessary to biodegradation started and share of polystyrene in copolymers that prevented biodegradation.",
publisher = "Универзитет у Београду, Хемијски факултет",
journal = "Универзитет у Београду",
title = "Kopolimeri dobijeni kalemljenjem vinilnih monomera na skrob - uticaj amina na sintezu i procesi degradacije u životnoj sredini, Copolumers obtained by grafting of vinyl monomers on starch - influence of amines on synthesis and degradation processes in environment",
url = "https://hdl.handle.net/21.15107/rcub_nardus_3478"
}
Nikolić, V. M.. (2013). Kopolimeri dobijeni kalemljenjem vinilnih monomera na skrob - uticaj amina na sintezu i procesi degradacije u životnoj sredini. in Универзитет у Београду
Универзитет у Београду, Хемијски факултет..
https://hdl.handle.net/21.15107/rcub_nardus_3478
Nikolić VM. Kopolimeri dobijeni kalemljenjem vinilnih monomera na skrob - uticaj amina na sintezu i procesi degradacije u životnoj sredini. in Универзитет у Београду. 2013;.
https://hdl.handle.net/21.15107/rcub_nardus_3478 .
Nikolić, Vladimir M., "Kopolimeri dobijeni kalemljenjem vinilnih monomera na skrob - uticaj amina na sintezu i procesi degradacije u životnoj sredini" in Универзитет у Београду (2013),
https://hdl.handle.net/21.15107/rcub_nardus_3478 .