TY  - JOUR
AU  - Obradović, Maja
AU  - Lačnjevac, Uroš
AU  - Radmilović, Vuk
AU  - Gavrilović-Wohlmuther, Aleksandra
AU  - Kovač, Janez
AU  - Rogan, Jelena
AU  - Radmilović, Velimir
AU  - Gojković, Snežana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7178
AB  - Two types of Cu-modified Pd catalysts supported on high area carbon were prepared: Pd nanoparticles modified with a sub-monolayer of underpotentially deposited Cu (Cu@Pd/C) and Pd-Cu alloy nanoparticles (Pd-Cu/C), and examined for the ethanol oxidation reaction (EOR) in alkaline solution. The catalysts were characterized by energy-dispersive X-ray spectroscopy, X-ray diffraction, transmission electron microscopy and X-ray photoelectron spectroscopy, as well as cyclic voltammetry. As reference catalysts, Pd/C and Pt/C were used. The electrochemically active surface area of all samples was determined from COads and Cuupd desorption and Pd oxide reduction, and used to assess their intrinsic activity for EOR. Intimate contact of Pd with Cu atoms enhanced its activity, regardless of the type of bimetal catalyst. The atomic Pd:Cu ratio between 2:1 and 4:1 appears to be optimal for high activity. The most active catalyst under the potentiodynamic conditions was Cu@Pd/C with θ(Cu) = 0.21,although Pd-Cu/C was superior during the potentiostatic test. All bimetallic catalysts surpassed Pd/C in mass activity. The EOR activity of Pt/C was higher compared to Pd-based catalysts at low potentials, both in terms of specific and mass activity, but with a significant decline over a 30-min potentiostatic stability test.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Palladium-copper bimetallic surfaces as electrocatalysts for the ethanol oxidation in an alkaline medium
VL  - 944
SP  - 117673
DO  - 10.1016/j.jelechem.2023.117673
ER  - 

@article{
author = "Obradović, Maja and Lačnjevac, Uroš and Radmilović, Vuk and Gavrilović-Wohlmuther, Aleksandra and Kovač, Janez and Rogan, Jelena and Radmilović, Velimir and Gojković, Snežana",
year = "2023",
abstract = "Two types of Cu-modified Pd catalysts supported on high area carbon were prepared: Pd nanoparticles modified with a sub-monolayer of underpotentially deposited Cu (Cu@Pd/C) and Pd-Cu alloy nanoparticles (Pd-Cu/C), and examined for the ethanol oxidation reaction (EOR) in alkaline solution. The catalysts were characterized by energy-dispersive X-ray spectroscopy, X-ray diffraction, transmission electron microscopy and X-ray photoelectron spectroscopy, as well as cyclic voltammetry. As reference catalysts, Pd/C and Pt/C were used. The electrochemically active surface area of all samples was determined from COads and Cuupd desorption and Pd oxide reduction, and used to assess their intrinsic activity for EOR. Intimate contact of Pd with Cu atoms enhanced its activity, regardless of the type of bimetal catalyst. The atomic Pd:Cu ratio between 2:1 and 4:1 appears to be optimal for high activity. The most active catalyst under the potentiodynamic conditions was Cu@Pd/C with θ(Cu) = 0.21,although Pd-Cu/C was superior during the potentiostatic test. All bimetallic catalysts surpassed Pd/C in mass activity. The EOR activity of Pt/C was higher compared to Pd-based catalysts at low potentials, both in terms of specific and mass activity, but with a significant decline over a 30-min potentiostatic stability test.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Palladium-copper bimetallic surfaces as electrocatalysts for the ethanol oxidation in an alkaline medium",
volume = "944",
pages = "117673",
doi = "10.1016/j.jelechem.2023.117673"
}

Obradović, M., Lačnjevac, U., Radmilović, V., Gavrilović-Wohlmuther, A., Kovač, J., Rogan, J., Radmilović, V.,& Gojković, S.. (2023). Palladium-copper bimetallic surfaces as electrocatalysts for the ethanol oxidation in an alkaline medium. in Journal of Electroanalytical Chemistry
Elsevier., 944, 117673.
https://doi.org/10.1016/j.jelechem.2023.117673

Obradović M, Lačnjevac U, Radmilović V, Gavrilović-Wohlmuther A, Kovač J, Rogan J, Radmilović V, Gojković S. Palladium-copper bimetallic surfaces as electrocatalysts for the ethanol oxidation in an alkaline medium. in Journal of Electroanalytical Chemistry. 2023;944:117673.
doi:10.1016/j.jelechem.2023.117673 .

Obradović, Maja, Lačnjevac, Uroš, Radmilović, Vuk, Gavrilović-Wohlmuther, Aleksandra, Kovač, Janez, Rogan, Jelena, Radmilović, Velimir, Gojković, Snežana, "Palladium-copper bimetallic surfaces as electrocatalysts for the ethanol oxidation in an alkaline medium" in Journal of Electroanalytical Chemistry, 944 (2023):117673,
https://doi.org/10.1016/j.jelechem.2023.117673 . .

TY  - CONF
AU  - Obradović, Maja
AU  - Rogan, Jelena
AU  - Lačnjevac, Uroš
AU  - Gavrilović-Wohlmuther, Aleksandra
AU  - Radmilović, Vuk V.
AU  - Radmilović, Velimir R.
AU  - Gojković, Snežana
PY  - 2022
UR  - http://elmina.tmf.bg.ac.rs
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5942
AB  - Nanocatalysts Pd/C and Pd-Cu/C were synthesized by a borohydride reduction method and 
characterized by thermogravimetric analysis (TGA), X-ray diffraction (XRD) and transmission 
electron microscopy (TEM). In addition, the Pd/C catalyst was decorated by Cuupd in an acid solution with various surface coverages (up to 0.5). The catalysts were electrochemically characterized by cyclic voltammetry (CV) and COads stripping in acid and alkaline solutions.  The electrochemically active surface area (ECSA) was estimated from the charge under the CO desorption peak in the alkaline solution and used for determining specific and mass activity for the EOR.
PB  - Belgrade : Serbian Academy of Sciences and Arts
PB  - Belgrade : Faculty of Technology and Metallurgy, University of Belgrade
C3  - Program and Book of Abstracts - Second International Conference on Electron Microscopy of Nanostructures, ELMINA 2022, August 22nd-26th, 2022, Belgrade, Serbia
T1  - Cuupd@Pd/C and Pd-Cu/C Nanocatalysts for Electrochemical Ethanol Oxidation in Alkaline Solution
SP  - 182
EP  - 183
UR  - https://hdl.handle.net/21.15107/rcub_cer_5942
ER  - 

@conference{
author = "Obradović, Maja and Rogan, Jelena and Lačnjevac, Uroš and Gavrilović-Wohlmuther, Aleksandra and Radmilović, Vuk V. and Radmilović, Velimir R. and Gojković, Snežana",
year = "2022",
abstract = "Nanocatalysts Pd/C and Pd-Cu/C were synthesized by a borohydride reduction method and 
characterized by thermogravimetric analysis (TGA), X-ray diffraction (XRD) and transmission 
electron microscopy (TEM). In addition, the Pd/C catalyst was decorated by Cuupd in an acid solution with various surface coverages (up to 0.5). The catalysts were electrochemically characterized by cyclic voltammetry (CV) and COads stripping in acid and alkaline solutions.  The electrochemically active surface area (ECSA) was estimated from the charge under the CO desorption peak in the alkaline solution and used for determining specific and mass activity for the EOR.",
publisher = "Belgrade : Serbian Academy of Sciences and Arts, Belgrade : Faculty of Technology and Metallurgy, University of Belgrade",
journal = "Program and Book of Abstracts - Second International Conference on Electron Microscopy of Nanostructures, ELMINA 2022, August 22nd-26th, 2022, Belgrade, Serbia",
title = "Cuupd@Pd/C and Pd-Cu/C Nanocatalysts for Electrochemical Ethanol Oxidation in Alkaline Solution",
pages = "182-183",
url = "https://hdl.handle.net/21.15107/rcub_cer_5942"
}

Obradović, M., Rogan, J., Lačnjevac, U., Gavrilović-Wohlmuther, A., Radmilović, V. V., Radmilović, V. R.,& Gojković, S.. (2022). Cuupd@Pd/C and Pd-Cu/C Nanocatalysts for Electrochemical Ethanol Oxidation in Alkaline Solution. in Program and Book of Abstracts - Second International Conference on Electron Microscopy of Nanostructures, ELMINA 2022, August 22nd-26th, 2022, Belgrade, Serbia
Belgrade : Serbian Academy of Sciences and Arts., 182-183.
https://hdl.handle.net/21.15107/rcub_cer_5942

Obradović M, Rogan J, Lačnjevac U, Gavrilović-Wohlmuther A, Radmilović VV, Radmilović VR, Gojković S. Cuupd@Pd/C and Pd-Cu/C Nanocatalysts for Electrochemical Ethanol Oxidation in Alkaline Solution. in Program and Book of Abstracts - Second International Conference on Electron Microscopy of Nanostructures, ELMINA 2022, August 22nd-26th, 2022, Belgrade, Serbia. 2022;:182-183.
https://hdl.handle.net/21.15107/rcub_cer_5942 .

Obradović, Maja, Rogan, Jelena, Lačnjevac, Uroš, Gavrilović-Wohlmuther, Aleksandra, Radmilović, Vuk V., Radmilović, Velimir R., Gojković, Snežana, "Cuupd@Pd/C and Pd-Cu/C Nanocatalysts for Electrochemical Ethanol Oxidation in Alkaline Solution" in Program and Book of Abstracts - Second International Conference on Electron Microscopy of Nanostructures, ELMINA 2022, August 22nd-26th, 2022, Belgrade, Serbia (2022):182-183,
https://hdl.handle.net/21.15107/rcub_cer_5942 .

TY  - JOUR
AU  - Stevanović, Sanja
AU  - Tripković, Dušan
AU  - Gavrilović-Wohlmuther, Aleksandra
AU  - Rogan, Jelena R.
AU  - Lačnjevac, Uroš
AU  - Jovanović, Vladislava M.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4821
AB  - Pt, PtSn and PtSnO2 catalysts supported on high surface area carbon synthesized by microwave assisted polyol procedure were tested for methanol oxidation. Based on TGA, EDX and XRD analysis, PtSn/C is composed of Pt and Pt3Sn phase while the rest of Sn is present in a form of very small tin oxide particles. This paper focuses on structure-activity relationships for CO tolerance and methanol oxidation reactions after addition of Sn to Pt catalysts. Alloying of Sn with Pt improves the rate of CO oxidation despite the fact that the pure Sn does not react with CO and therefore activity for methanol oxidation increases ~ 2 times in comparison to Pt/C catalyst. PtSn/C catalyst shows small advantage in comparison with PtSnO2/C catalyst due to the alloyed Sn and its electronic effect. Long term stability tests also confirmed that PtSn/C catalyst is somewhat better in comparison to PtSnO2/C.
PB  - Serbia : Electrochemical Science Group
T2  - International Journal of Electrochemical Science
T1  - Carbon Supported PtSn versus PtSnO2 Catalysts in Methanol Oxidation
VL  - 16
VL  - 2
SP  - 1
SP  - 16
DO  - 10.20964/2021.02.55
ER  - 

@article{
author = "Stevanović, Sanja and Tripković, Dušan and Gavrilović-Wohlmuther, Aleksandra and Rogan, Jelena R. and Lačnjevac, Uroš and Jovanović, Vladislava M.",
year = "2021",
abstract = "Pt, PtSn and PtSnO2 catalysts supported on high surface area carbon synthesized by microwave assisted polyol procedure were tested for methanol oxidation. Based on TGA, EDX and XRD analysis, PtSn/C is composed of Pt and Pt3Sn phase while the rest of Sn is present in a form of very small tin oxide particles. This paper focuses on structure-activity relationships for CO tolerance and methanol oxidation reactions after addition of Sn to Pt catalysts. Alloying of Sn with Pt improves the rate of CO oxidation despite the fact that the pure Sn does not react with CO and therefore activity for methanol oxidation increases ~ 2 times in comparison to Pt/C catalyst. PtSn/C catalyst shows small advantage in comparison with PtSnO2/C catalyst due to the alloyed Sn and its electronic effect. Long term stability tests also confirmed that PtSn/C catalyst is somewhat better in comparison to PtSnO2/C.",
publisher = "Serbia : Electrochemical Science Group",
journal = "International Journal of Electrochemical Science",
title = "Carbon Supported PtSn versus PtSnO2 Catalysts in Methanol Oxidation",
volume = "16, 2",
pages = "1-16",
doi = "10.20964/2021.02.55"
}

Stevanović, S., Tripković, D., Gavrilović-Wohlmuther, A., Rogan, J. R., Lačnjevac, U.,& Jovanović, V. M.. (2021). Carbon Supported PtSn versus PtSnO2 Catalysts in Methanol Oxidation. in International Journal of Electrochemical Science
Serbia : Electrochemical Science Group., 16, 1.
https://doi.org/10.20964/2021.02.55

Stevanović S, Tripković D, Gavrilović-Wohlmuther A, Rogan JR, Lačnjevac U, Jovanović VM. Carbon Supported PtSn versus PtSnO2 Catalysts in Methanol Oxidation. in International Journal of Electrochemical Science. 2021;16:1.
doi:10.20964/2021.02.55 .

Stevanović, Sanja, Tripković, Dušan, Gavrilović-Wohlmuther, Aleksandra, Rogan, Jelena R., Lačnjevac, Uroš, Jovanović, Vladislava M., "Carbon Supported PtSn versus PtSnO2 Catalysts in Methanol Oxidation" in International Journal of Electrochemical Science, 16 (2021):1,
https://doi.org/10.20964/2021.02.55 . .

TY  - JOUR
AU  - Obradović, Maja
AU  - Balanč, Bojana
AU  - Lačnjevac, Uroš
AU  - Gojković, Snežana Lj.
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4234
AB  - Hydrated iridium oxyhydroxide (IrOx) films were electrochemically deposited from an alkaline oxalic solution at constant anodic potentials and by applying a potential cycling protocol, in both cases with variation of the electrodeposition time. From UV–vis spetroscopy of the solution for the deposition and their characterization it was concluded that a mixture of Ir(III)/Ir(IV) monomers participates in the deposition of IrOx film. X-ray photoelectron spectroscopy (XPS) of IrOx films indicated that both types of films contained hydrated Ir(IV) hydroxide as the dominant species, but in the film deposited by potential cycling the presence of the additional Ir(III) species was evident. The scanning electon microscopy (SEM) analysis of the surface morphology revealed that films deposited by potential cycling were more uniform than the films deposited at a constant potential. The amount of electrochemically active Ir-species on the surface of deposited IrOx films was estimated from the voltammetric charge of the Ir(III)/Ir(IV) transition. Depending on the film electrodeposition parameters, the values between 15 and 1080 nmol cm−2 were obtained. The electrochemically active surface area (ECSA) of IrOx films was calculated from cyclic voltammetry and electrochemical impedance spectroscopy (EIS) measurements and ranged from 3 to 131 cm2 per 1 cm2 of geometric surface area for various films. The activity and stability of IrOx films toward oxygen evolution reaction (OER) was investigated in 0.5 M H2SO4 solution under potentiostatic conditions. The intrinsic activity, stated as turnover frequency and specific current density normalized per ECSA, showed that the OER activity of IrOx films deposited by potential cycling are up to two and a half times higher than the activity of films deposited at a constant anodic potential. Potentiostatic stability test showed a decrease in OER current over time for both type of the films. Determination of ECSA, the amount of electroactive Ir species, XPS spectrum and SEM imaging after the test indicated that the decrease in OER activity was caused by partial dissolution and delamination of the film as well as by oxidation of highly active hydroxide Ir(III) species.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Electrochemically deposited iridium-oxide: Estimation of intrinsic activity and stability in oxygen evolution in acid solution
VL  - 881
SP  - 114944
DO  - 10.1016/j.jelechem.2020.114944
ER  - 

@article{
author = "Obradović, Maja and Balanč, Bojana and Lačnjevac, Uroš and Gojković, Snežana Lj.",
year = "2021",
abstract = "Hydrated iridium oxyhydroxide (IrOx) films were electrochemically deposited from an alkaline oxalic solution at constant anodic potentials and by applying a potential cycling protocol, in both cases with variation of the electrodeposition time. From UV–vis spetroscopy of the solution for the deposition and their characterization it was concluded that a mixture of Ir(III)/Ir(IV) monomers participates in the deposition of IrOx film. X-ray photoelectron spectroscopy (XPS) of IrOx films indicated that both types of films contained hydrated Ir(IV) hydroxide as the dominant species, but in the film deposited by potential cycling the presence of the additional Ir(III) species was evident. The scanning electon microscopy (SEM) analysis of the surface morphology revealed that films deposited by potential cycling were more uniform than the films deposited at a constant potential. The amount of electrochemically active Ir-species on the surface of deposited IrOx films was estimated from the voltammetric charge of the Ir(III)/Ir(IV) transition. Depending on the film electrodeposition parameters, the values between 15 and 1080 nmol cm−2 were obtained. The electrochemically active surface area (ECSA) of IrOx films was calculated from cyclic voltammetry and electrochemical impedance spectroscopy (EIS) measurements and ranged from 3 to 131 cm2 per 1 cm2 of geometric surface area for various films. The activity and stability of IrOx films toward oxygen evolution reaction (OER) was investigated in 0.5 M H2SO4 solution under potentiostatic conditions. The intrinsic activity, stated as turnover frequency and specific current density normalized per ECSA, showed that the OER activity of IrOx films deposited by potential cycling are up to two and a half times higher than the activity of films deposited at a constant anodic potential. Potentiostatic stability test showed a decrease in OER current over time for both type of the films. Determination of ECSA, the amount of electroactive Ir species, XPS spectrum and SEM imaging after the test indicated that the decrease in OER activity was caused by partial dissolution and delamination of the film as well as by oxidation of highly active hydroxide Ir(III) species.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Electrochemically deposited iridium-oxide: Estimation of intrinsic activity and stability in oxygen evolution in acid solution",
volume = "881",
pages = "114944",
doi = "10.1016/j.jelechem.2020.114944"
}

Obradović, M., Balanč, B., Lačnjevac, U.,& Gojković, S. Lj.. (2021). Electrochemically deposited iridium-oxide: Estimation of intrinsic activity and stability in oxygen evolution in acid solution. in Journal of Electroanalytical Chemistry
Elsevier., 881, 114944.
https://doi.org/10.1016/j.jelechem.2020.114944

Obradović M, Balanč B, Lačnjevac U, Gojković SL. Electrochemically deposited iridium-oxide: Estimation of intrinsic activity and stability in oxygen evolution in acid solution. in Journal of Electroanalytical Chemistry. 2021;881:114944.
doi:10.1016/j.jelechem.2020.114944 .

Obradović, Maja, Balanč, Bojana, Lačnjevac, Uroš, Gojković, Snežana Lj., "Electrochemically deposited iridium-oxide: Estimation of intrinsic activity and stability in oxygen evolution in acid solution" in Journal of Electroanalytical Chemistry, 881 (2021):114944,
https://doi.org/10.1016/j.jelechem.2020.114944 . .

TY  - CONF
AU  - Cvetanović Zobenica, Katarina
AU  - Tadić, Nenad
AU  - Lačnjevac, Uroš
AU  - Milinković, Evgenija
AU  - Rašljić Rafajilović, Milena
AU  - Smiljanić, Milče M.
AU  - Vasiljević-Radović, Dana
AU  - Stanisavljev, Dragomir
PY  - 2020
UR  - https://www.etran.rs/2020/IcETRAN/About_Conference/
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4001
AB  - Dye Sensitized Solar cells (DSSC) are very attractive due to their low cost fabricating methods and used materials. One of the most important parts of the cells is the photoanode. Many semiconducting materials are used for this purpose, but most common one is titanium dioxide (TiO2). Optimal sintering temperature of anode plays important role in performance of TiO2 layer in DSSC, since it provides good electrical contact between particles, which consequently leads to better electron transfer through the cell, but still restricts unfavorable phase transformation. In this paper two identical cells with natural pigment hypericin as sensitizer were assembled with anodes sintered on two different temperatures (500 °C and 600 °C), so their performance parameters could be compared. The ratios between the maximal power densities (Pmax) and solar to electrical energy conversion efficiencies (η) for the two measured cells are 5 times in favor for the cell sintered at 600 °C, which shows the importance of temperature treatment of TiO2 electrodes for better performance of solar cells.
PB  - Belgrade : ETRAN Society
C3  - Proccedings - 7th International Conference on Electrical, Electronic and Computing Engineering, IcETRAN 2020
T1  - Influence of sintering temperature on the performance of titanium dioxide anode in Dye Sensitized Solar Cells with natural pigment hypericin
UR  - https://hdl.handle.net/21.15107/rcub_cer_4001
ER  - 

@conference{
author = "Cvetanović Zobenica, Katarina and Tadić, Nenad and Lačnjevac, Uroš and Milinković, Evgenija and Rašljić Rafajilović, Milena and Smiljanić, Milče M. and Vasiljević-Radović, Dana and Stanisavljev, Dragomir",
year = "2020",
abstract = "Dye Sensitized Solar cells (DSSC) are very attractive due to their low cost fabricating methods and used materials. One of the most important parts of the cells is the photoanode. Many semiconducting materials are used for this purpose, but most common one is titanium dioxide (TiO2). Optimal sintering temperature of anode plays important role in performance of TiO2 layer in DSSC, since it provides good electrical contact between particles, which consequently leads to better electron transfer through the cell, but still restricts unfavorable phase transformation. In this paper two identical cells with natural pigment hypericin as sensitizer were assembled with anodes sintered on two different temperatures (500 °C and 600 °C), so their performance parameters could be compared. The ratios between the maximal power densities (Pmax) and solar to electrical energy conversion efficiencies (η) for the two measured cells are 5 times in favor for the cell sintered at 600 °C, which shows the importance of temperature treatment of TiO2 electrodes for better performance of solar cells.",
publisher = "Belgrade : ETRAN Society",
journal = "Proccedings - 7th International Conference on Electrical, Electronic and Computing Engineering, IcETRAN 2020",
title = "Influence of sintering temperature on the performance of titanium dioxide anode in Dye Sensitized Solar Cells with natural pigment hypericin",
url = "https://hdl.handle.net/21.15107/rcub_cer_4001"
}

Cvetanović Zobenica, K., Tadić, N., Lačnjevac, U., Milinković, E., Rašljić Rafajilović, M., Smiljanić, M. M., Vasiljević-Radović, D.,& Stanisavljev, D.. (2020). Influence of sintering temperature on the performance of titanium dioxide anode in Dye Sensitized Solar Cells with natural pigment hypericin. in Proccedings - 7th International Conference on Electrical, Electronic and Computing Engineering, IcETRAN 2020
Belgrade : ETRAN Society..
https://hdl.handle.net/21.15107/rcub_cer_4001

Cvetanović Zobenica K, Tadić N, Lačnjevac U, Milinković E, Rašljić Rafajilović M, Smiljanić MM, Vasiljević-Radović D, Stanisavljev D. Influence of sintering temperature on the performance of titanium dioxide anode in Dye Sensitized Solar Cells with natural pigment hypericin. in Proccedings - 7th International Conference on Electrical, Electronic and Computing Engineering, IcETRAN 2020. 2020;.
https://hdl.handle.net/21.15107/rcub_cer_4001 .

Cvetanović Zobenica, Katarina, Tadić, Nenad, Lačnjevac, Uroš, Milinković, Evgenija, Rašljić Rafajilović, Milena, Smiljanić, Milče M., Vasiljević-Radović, Dana, Stanisavljev, Dragomir, "Influence of sintering temperature on the performance of titanium dioxide anode in Dye Sensitized Solar Cells with natural pigment hypericin" in Proccedings - 7th International Conference on Electrical, Electronic and Computing Engineering, IcETRAN 2020 (2020),
https://hdl.handle.net/21.15107/rcub_cer_4001 .

TY  - JOUR
AU  - Nikolić, Nebojša D.
AU  - Živković, Predrag M.
AU  - Elezović, Nevenka
AU  - Lačnjevac, Uroš
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3588
AB  - Formation of the honeycomb-like electrodes of copper by the regime of reversing current (RC) in the second range has been
investigated. Morphological and structural characteristics of this electrode type obtained by various parameters of RC regimes
were examined by the techniques of scanning electron and optical microscopies, while the amount of hydrogen produced during
electrodeposition process was quantified by determination of the average current efficiency for hydrogen evolution reaction. To
optimize the process of formation of the honeycomb-like electrodes, the following parameters of square wave RC regimes were
analyzed: the cathodic current density, the same anodic to cathodic time ratios but various durations of the cathodic and the
anodic pulses, and the various values of the anodic to cathodic time ratios. The minimal amount of hydrogen spent for formation
of the honeycomb-like electrodes with maximal number of holes formed from detached hydrogen bubbles is obtained with the
anodic to cathodic time ratio of 0.50 and duration of the cathodic and anodic pulses of 2 and 1 s, respectively. To explain
formation of the honeycomb-like electrodes of optimal morphological and structural characteristics, the upgraded mathematical
model defining the RC regime in the second range was proposed and discussed.
PB  - Springer-Verlag
T2  - Journal of Solid State Electrochemistry
T1  - Optimization of process of the honeycomb-like structure formation by the regime of reversing current (RC) in the second range
VL  - 24
IS  - 7
SP  - 1615
EP  - 1624
DO  - 10.1007/s10008-020-04658-3
ER  - 

@article{
author = "Nikolić, Nebojša D. and Živković, Predrag M. and Elezović, Nevenka and Lačnjevac, Uroš",
year = "2020",
abstract = "Formation of the honeycomb-like electrodes of copper by the regime of reversing current (RC) in the second range has been
investigated. Morphological and structural characteristics of this electrode type obtained by various parameters of RC regimes
were examined by the techniques of scanning electron and optical microscopies, while the amount of hydrogen produced during
electrodeposition process was quantified by determination of the average current efficiency for hydrogen evolution reaction. To
optimize the process of formation of the honeycomb-like electrodes, the following parameters of square wave RC regimes were
analyzed: the cathodic current density, the same anodic to cathodic time ratios but various durations of the cathodic and the
anodic pulses, and the various values of the anodic to cathodic time ratios. The minimal amount of hydrogen spent for formation
of the honeycomb-like electrodes with maximal number of holes formed from detached hydrogen bubbles is obtained with the
anodic to cathodic time ratio of 0.50 and duration of the cathodic and anodic pulses of 2 and 1 s, respectively. To explain
formation of the honeycomb-like electrodes of optimal morphological and structural characteristics, the upgraded mathematical
model defining the RC regime in the second range was proposed and discussed.",
publisher = "Springer-Verlag",
journal = "Journal of Solid State Electrochemistry",
title = "Optimization of process of the honeycomb-like structure formation by the regime of reversing current (RC) in the second range",
volume = "24",
number = "7",
pages = "1615-1624",
doi = "10.1007/s10008-020-04658-3"
}

Nikolić, N. D., Živković, P. M., Elezović, N.,& Lačnjevac, U.. (2020). Optimization of process of the honeycomb-like structure formation by the regime of reversing current (RC) in the second range. in Journal of Solid State Electrochemistry
Springer-Verlag., 24(7), 1615-1624.
https://doi.org/10.1007/s10008-020-04658-3

Nikolić ND, Živković PM, Elezović N, Lačnjevac U. Optimization of process of the honeycomb-like structure formation by the regime of reversing current (RC) in the second range. in Journal of Solid State Electrochemistry. 2020;24(7):1615-1624.
doi:10.1007/s10008-020-04658-3 .

Nikolić, Nebojša D., Živković, Predrag M., Elezović, Nevenka, Lačnjevac, Uroš, "Optimization of process of the honeycomb-like structure formation by the regime of reversing current (RC) in the second range" in Journal of Solid State Electrochemistry, 24, no. 7 (2020):1615-1624,
https://doi.org/10.1007/s10008-020-04658-3 . .

TY  - JOUR
AU  - Cvetanović Zobenica, Katarina
AU  - Lačnjevac, Uroš
AU  - Etinski, Mihajlo
AU  - Vasiljević-Radović, Dana
AU  - Stanisavljev, Dragomir
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3213
AB  - Rising demands for renewable energy sources have led to the development of dye sensitized solar cells. It
is a challenge to find a good and low cost sensitizer, which has a low environmental impact. In this work,
we conducted spectroscopic and electrochemical experiments, as well as quantum-chemical calculations of the natural pigment hypericin, in order to provide insight into its sensitizing efficiency. To this
end, three identical cells were made and characterized. Although this pigment exhibited good adsorption
onto a semiconductor surface, a high molar absorption coefficient (43 700 L mol−1 cm−1
) and favorable
alignment of energy levels and provided a long lifetime of electrons (17.8 ms) in the TiO2 photoanode, it
was found that the efficiency of hypericin-sensitized solar cells was very low, only 0.0245%. We suggest
that this inefficiency originated from a low injection of electrons into the conduction band of TiO2.
This conclusion is supported by the density functional theory calculations which revealed a low electron
density in the anchoring groups of electronically excited hypericin. The results of this work could be valuable not only in the photovoltaic aspect, but also for application of hypericin in medicine in photodynamic
therapy
PB  - Royal Society of Chemistry
T2  - Photochemical & Photobiological Sciences
T1  - Influence of the electron donor properties of hypericin on its sensitizing ability in DSSCs
VL  - 18
IS  - 8
SP  - 2023
EP  - 2030
DO  - 10.1039/c9pp00118b
ER  - 

@article{
author = "Cvetanović Zobenica, Katarina and Lačnjevac, Uroš and Etinski, Mihajlo and Vasiljević-Radović, Dana and Stanisavljev, Dragomir",
year = "2019",
abstract = "Rising demands for renewable energy sources have led to the development of dye sensitized solar cells. It
is a challenge to find a good and low cost sensitizer, which has a low environmental impact. In this work,
we conducted spectroscopic and electrochemical experiments, as well as quantum-chemical calculations of the natural pigment hypericin, in order to provide insight into its sensitizing efficiency. To this
end, three identical cells were made and characterized. Although this pigment exhibited good adsorption
onto a semiconductor surface, a high molar absorption coefficient (43 700 L mol−1 cm−1
) and favorable
alignment of energy levels and provided a long lifetime of electrons (17.8 ms) in the TiO2 photoanode, it
was found that the efficiency of hypericin-sensitized solar cells was very low, only 0.0245%. We suggest
that this inefficiency originated from a low injection of electrons into the conduction band of TiO2.
This conclusion is supported by the density functional theory calculations which revealed a low electron
density in the anchoring groups of electronically excited hypericin. The results of this work could be valuable not only in the photovoltaic aspect, but also for application of hypericin in medicine in photodynamic
therapy",
publisher = "Royal Society of Chemistry",
journal = "Photochemical & Photobiological Sciences",
title = "Influence of the electron donor properties of hypericin on its sensitizing ability in DSSCs",
volume = "18",
number = "8",
pages = "2023-2030",
doi = "10.1039/c9pp00118b"
}

Cvetanović Zobenica, K., Lačnjevac, U., Etinski, M., Vasiljević-Radović, D.,& Stanisavljev, D.. (2019). Influence of the electron donor properties of hypericin on its sensitizing ability in DSSCs. in Photochemical & Photobiological Sciences
Royal Society of Chemistry., 18(8), 2023-2030.
https://doi.org/10.1039/c9pp00118b

Cvetanović Zobenica K, Lačnjevac U, Etinski M, Vasiljević-Radović D, Stanisavljev D. Influence of the electron donor properties of hypericin on its sensitizing ability in DSSCs. in Photochemical & Photobiological Sciences. 2019;18(8):2023-2030.
doi:10.1039/c9pp00118b .

Cvetanović Zobenica, Katarina, Lačnjevac, Uroš, Etinski, Mihajlo, Vasiljević-Radović, Dana, Stanisavljev, Dragomir, "Influence of the electron donor properties of hypericin on its sensitizing ability in DSSCs" in Photochemical & Photobiological Sciences, 18, no. 8 (2019):2023-2030,
https://doi.org/10.1039/c9pp00118b . .

TY  - JOUR
AU  - Berkesi, Kata
AU  - Živković, Predrag M.
AU  - Elezović, Nevenka
AU  - Lačnjevac, Uroš
AU  - Hristoforou, Evangelos
AU  - Nikolić, Nebojša D.
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2986
AB  - Electrodeposition of copper in the hydrogen co-deposition range by the regime of reversing current (RC) in the second range has been investigated by determination of the average current efficiency for hydrogen evolution reaction and by scanning electron (SEM) and optical (OM) microscopic analysis of the obtained deposits. Keeping the cathodic current density, the cathodic and the anodic pulses constant in all experiments, the anodic current density (ja) values were varied: 40, 80, 160, 240 and 320 mA cm−2. The Cu deposits produced by the RC regimes with different anodic current density values were compared with that obtained in a constant galvanostatic regime (DC) at the current density equal to the cathodic current density in the RC regimes. The honeycomb-like structures were formed in the DC regime and by the RC regimes with ja of 40 and 80 mA cm−2. The hole size in them was in the 60–70 μm range. Due to the decrease of quantity of evolved hydrogen with increasing anodic current density, the larger dish-like holes with dendrites at their bottom and shoulder were formed with ja values of 160, 240 and 320 mA cm−2. The maximum number of holes, and hence, the largest specific surface area of the honeycomb-like electrodes was obtained with ja = 80 mA cm−2, that can be ascribed to a suppression of coalescence of neighboring hydrogen bubbles. Application of the RC regime also led to the increase of uniformity of structures, what is concluded by cross section analysis of the formed honeycomb-like electrodes. For the first time, mechanism of Cu electrodeposition in the hydrogen co-deposition range by the RC regime in the second range was proposed and discussed.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Mechanism of formation of the honeycomb-like structures by the regime of the reversing current (RC) in the second range
VL  - 833
SP  - 401
EP  - 410
DO  - 10.1016/j.jelechem.2018.12.021
ER  - 

@article{
author = "Berkesi, Kata and Živković, Predrag M. and Elezović, Nevenka and Lačnjevac, Uroš and Hristoforou, Evangelos and Nikolić, Nebojša D.",
year = "2019",
abstract = "Electrodeposition of copper in the hydrogen co-deposition range by the regime of reversing current (RC) in the second range has been investigated by determination of the average current efficiency for hydrogen evolution reaction and by scanning electron (SEM) and optical (OM) microscopic analysis of the obtained deposits. Keeping the cathodic current density, the cathodic and the anodic pulses constant in all experiments, the anodic current density (ja) values were varied: 40, 80, 160, 240 and 320 mA cm−2. The Cu deposits produced by the RC regimes with different anodic current density values were compared with that obtained in a constant galvanostatic regime (DC) at the current density equal to the cathodic current density in the RC regimes. The honeycomb-like structures were formed in the DC regime and by the RC regimes with ja of 40 and 80 mA cm−2. The hole size in them was in the 60–70 μm range. Due to the decrease of quantity of evolved hydrogen with increasing anodic current density, the larger dish-like holes with dendrites at their bottom and shoulder were formed with ja values of 160, 240 and 320 mA cm−2. The maximum number of holes, and hence, the largest specific surface area of the honeycomb-like electrodes was obtained with ja = 80 mA cm−2, that can be ascribed to a suppression of coalescence of neighboring hydrogen bubbles. Application of the RC regime also led to the increase of uniformity of structures, what is concluded by cross section analysis of the formed honeycomb-like electrodes. For the first time, mechanism of Cu electrodeposition in the hydrogen co-deposition range by the RC regime in the second range was proposed and discussed.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Mechanism of formation of the honeycomb-like structures by the regime of the reversing current (RC) in the second range",
volume = "833",
pages = "401-410",
doi = "10.1016/j.jelechem.2018.12.021"
}

Berkesi, K., Živković, P. M., Elezović, N., Lačnjevac, U., Hristoforou, E.,& Nikolić, N. D.. (2019). Mechanism of formation of the honeycomb-like structures by the regime of the reversing current (RC) in the second range. in Journal of Electroanalytical Chemistry
Elsevier., 833, 401-410.
https://doi.org/10.1016/j.jelechem.2018.12.021

Berkesi K, Živković PM, Elezović N, Lačnjevac U, Hristoforou E, Nikolić ND. Mechanism of formation of the honeycomb-like structures by the regime of the reversing current (RC) in the second range. in Journal of Electroanalytical Chemistry. 2019;833:401-410.
doi:10.1016/j.jelechem.2018.12.021 .

Berkesi, Kata, Živković, Predrag M., Elezović, Nevenka, Lačnjevac, Uroš, Hristoforou, Evangelos, Nikolić, Nebojša D., "Mechanism of formation of the honeycomb-like structures by the regime of the reversing current (RC) in the second range" in Journal of Electroanalytical Chemistry, 833 (2019):401-410,
https://doi.org/10.1016/j.jelechem.2018.12.021 . .

TY  - JOUR
AU  - Berkesi, Kata
AU  - Živković, Predrag M.
AU  - Elezović, Nevenka
AU  - Lačnjevac, Uroš
AU  - Hristoforou, Evangelos
AU  - Nikolić, Nebojša D.
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2987
AB  - Electrodeposition of copper in the hydrogen co-deposition range by the regime of reversing current (RC) in the second range has been investigated by determination of the average current efficiency for hydrogen evolution reaction and by scanning electron (SEM) and optical (OM) microscopic analysis of the obtained deposits. Keeping the cathodic current density, the cathodic and the anodic pulses constant in all experiments, the anodic current density (ja) values were varied: 40, 80, 160, 240 and 320 mA cm−2. The Cu deposits produced by the RC regimes with different anodic current density values were compared with that obtained in a constant galvanostatic regime (DC) at the current density equal to the cathodic current density in the RC regimes. The honeycomb-like structures were formed in the DC regime and by the RC regimes with ja of 40 and 80 mA cm−2. The hole size in them was in the 60–70 μm range. Due to the decrease of quantity of evolved hydrogen with increasing anodic current density, the larger dish-like holes with dendrites at their bottom and shoulder were formed with ja values of 160, 240 and 320 mA cm−2. The maximum number of holes, and hence, the largest specific surface area of the honeycomb-like electrodes was obtained with ja = 80 mA cm−2, that can be ascribed to a suppression of coalescence of neighboring hydrogen bubbles. Application of the RC regime also led to the increase of uniformity of structures, what is concluded by cross section analysis of the formed honeycomb-like electrodes. For the first time, mechanism of Cu electrodeposition in the hydrogen co-deposition range by the RC regime in the second range was proposed and discussed.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Mechanism of formation of the honeycomb-like structures by the regime of the reversing current (RC) in the second range
VL  - 833
SP  - 401
EP  - 410
DO  - 10.1016/j.jelechem.2018.12.021
ER  - 

@article{
author = "Berkesi, Kata and Živković, Predrag M. and Elezović, Nevenka and Lačnjevac, Uroš and Hristoforou, Evangelos and Nikolić, Nebojša D.",
year = "2019",
abstract = "Electrodeposition of copper in the hydrogen co-deposition range by the regime of reversing current (RC) in the second range has been investigated by determination of the average current efficiency for hydrogen evolution reaction and by scanning electron (SEM) and optical (OM) microscopic analysis of the obtained deposits. Keeping the cathodic current density, the cathodic and the anodic pulses constant in all experiments, the anodic current density (ja) values were varied: 40, 80, 160, 240 and 320 mA cm−2. The Cu deposits produced by the RC regimes with different anodic current density values were compared with that obtained in a constant galvanostatic regime (DC) at the current density equal to the cathodic current density in the RC regimes. The honeycomb-like structures were formed in the DC regime and by the RC regimes with ja of 40 and 80 mA cm−2. The hole size in them was in the 60–70 μm range. Due to the decrease of quantity of evolved hydrogen with increasing anodic current density, the larger dish-like holes with dendrites at their bottom and shoulder were formed with ja values of 160, 240 and 320 mA cm−2. The maximum number of holes, and hence, the largest specific surface area of the honeycomb-like electrodes was obtained with ja = 80 mA cm−2, that can be ascribed to a suppression of coalescence of neighboring hydrogen bubbles. Application of the RC regime also led to the increase of uniformity of structures, what is concluded by cross section analysis of the formed honeycomb-like electrodes. For the first time, mechanism of Cu electrodeposition in the hydrogen co-deposition range by the RC regime in the second range was proposed and discussed.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Mechanism of formation of the honeycomb-like structures by the regime of the reversing current (RC) in the second range",
volume = "833",
pages = "401-410",
doi = "10.1016/j.jelechem.2018.12.021"
}

Berkesi, K., Živković, P. M., Elezović, N., Lačnjevac, U., Hristoforou, E.,& Nikolić, N. D.. (2019). Mechanism of formation of the honeycomb-like structures by the regime of the reversing current (RC) in the second range. in Journal of Electroanalytical Chemistry
Elsevier., 833, 401-410.
https://doi.org/10.1016/j.jelechem.2018.12.021

Berkesi K, Živković PM, Elezović N, Lačnjevac U, Hristoforou E, Nikolić ND. Mechanism of formation of the honeycomb-like structures by the regime of the reversing current (RC) in the second range. in Journal of Electroanalytical Chemistry. 2019;833:401-410.
doi:10.1016/j.jelechem.2018.12.021 .

Berkesi, Kata, Živković, Predrag M., Elezović, Nevenka, Lačnjevac, Uroš, Hristoforou, Evangelos, Nikolić, Nebojša D., "Mechanism of formation of the honeycomb-like structures by the regime of the reversing current (RC) in the second range" in Journal of Electroanalytical Chemistry, 833 (2019):401-410,
https://doi.org/10.1016/j.jelechem.2018.12.021 . .

TY  - JOUR
AU  - Tripković, Dušan
AU  - Stevanović, Sanja
AU  - Gavrilović, Aleksandra
AU  - Rogan, Jelena R.
AU  - Lačnjevac, Uroš
AU  - Kravić, Tamara
AU  - Jovanović, Vladislava M.
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2465
AB  - In our previous paper, we described in detail studies of Sn influence on electrocatalytic activity of PtSn catalyst for CO and formic acid oxidation (StevanoviAc et al., J. Phys. Chem. C, 118 (2014) 278-289). The catalyst was composed of a Pt phase, Pt3Sn alloy and very small SnO2 particles. Different electrochemical treatment enabled studies of PtSn/C having Sn both in surface and subsurface layers and skeleton structure of this catalyst with Sn only in subsurface layers. The results obtained revealed the promotional effect of surface Sn whether alloyed or as oxide above all in preventing accumulation of CO and blocking the surface Pt atoms. As a consequence, in formic acid oxidation, the currents are not entering the plateau but increasing constantly until reaching a maximum. It was concluded that at lower potentials the effect of Sn on formic acid oxidation was predominantly electronic but with increasing the potential bi-functional mechanism prevailed due to the leading role of SnO2. This role of SnO2 is restated in the present study. Therefore, CO and formic acid oxidation were examined at PtSnO2/C catalyst. The catalyst was synthesised by the same microwave-assisted polyol procedure. According to XRD analysis, the catalyst is composed of a Pt phase and SnO2 phase. The reactions were examined on PtSnO2/C catalyst treated on the same way as PtSn/C. Comparing the results obtained, the role of SnO2 is confirmed and at the same time the significance of alloyed Sn and its electronic effect is revealed.
PB  - Springer, New York
T2  - Electrocatalysis
T1  - The Role of SnO2 on Electrocatalytic Activity of PtSn Catalysts
VL  - 9
IS  - 1
SP  - 76
EP  - 85
DO  - 10.1007/s12678-017-0424-4
ER  - 

@article{
author = "Tripković, Dušan and Stevanović, Sanja and Gavrilović, Aleksandra and Rogan, Jelena R. and Lačnjevac, Uroš and Kravić, Tamara and Jovanović, Vladislava M.",
year = "2018",
abstract = "In our previous paper, we described in detail studies of Sn influence on electrocatalytic activity of PtSn catalyst for CO and formic acid oxidation (StevanoviAc et al., J. Phys. Chem. C, 118 (2014) 278-289). The catalyst was composed of a Pt phase, Pt3Sn alloy and very small SnO2 particles. Different electrochemical treatment enabled studies of PtSn/C having Sn both in surface and subsurface layers and skeleton structure of this catalyst with Sn only in subsurface layers. The results obtained revealed the promotional effect of surface Sn whether alloyed or as oxide above all in preventing accumulation of CO and blocking the surface Pt atoms. As a consequence, in formic acid oxidation, the currents are not entering the plateau but increasing constantly until reaching a maximum. It was concluded that at lower potentials the effect of Sn on formic acid oxidation was predominantly electronic but with increasing the potential bi-functional mechanism prevailed due to the leading role of SnO2. This role of SnO2 is restated in the present study. Therefore, CO and formic acid oxidation were examined at PtSnO2/C catalyst. The catalyst was synthesised by the same microwave-assisted polyol procedure. According to XRD analysis, the catalyst is composed of a Pt phase and SnO2 phase. The reactions were examined on PtSnO2/C catalyst treated on the same way as PtSn/C. Comparing the results obtained, the role of SnO2 is confirmed and at the same time the significance of alloyed Sn and its electronic effect is revealed.",
publisher = "Springer, New York",
journal = "Electrocatalysis",
title = "The Role of SnO2 on Electrocatalytic Activity of PtSn Catalysts",
volume = "9",
number = "1",
pages = "76-85",
doi = "10.1007/s12678-017-0424-4"
}

Tripković, D., Stevanović, S., Gavrilović, A., Rogan, J. R., Lačnjevac, U., Kravić, T.,& Jovanović, V. M.. (2018). The Role of SnO2 on Electrocatalytic Activity of PtSn Catalysts. in Electrocatalysis
Springer, New York., 9(1), 76-85.
https://doi.org/10.1007/s12678-017-0424-4

Tripković D, Stevanović S, Gavrilović A, Rogan JR, Lačnjevac U, Kravić T, Jovanović VM. The Role of SnO2 on Electrocatalytic Activity of PtSn Catalysts. in Electrocatalysis. 2018;9(1):76-85.
doi:10.1007/s12678-017-0424-4 .

Tripković, Dušan, Stevanović, Sanja, Gavrilović, Aleksandra, Rogan, Jelena R., Lačnjevac, Uroš, Kravić, Tamara, Jovanović, Vladislava M., "The Role of SnO2 on Electrocatalytic Activity of PtSn Catalysts" in Electrocatalysis, 9, no. 1 (2018):76-85,
https://doi.org/10.1007/s12678-017-0424-4 . .

TY  - JOUR
AU  - Tasić, Nikola
AU  - Marinković Stanojević, Zorica
AU  - Branković, Zorica
AU  - Žunić, Milan
AU  - Lačnjevac, Uroš
AU  - Gilić, Martina
AU  - Novaković, Tatjana
AU  - Branković, Goran
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3959
AB  - Mesoporous TiO2 films with spherical architectures and promising performance in dye-sensitized solar cells
(DSSCs) were prepared. The morphology of the films was investigated by scanning electron microscopy. Transmission
electron microscopy analysis of the spheres disclosed the elongated shape of sub-20 nm primary particles,
while BET analysis revealed their high surface area of 135m2/g. Anatase presence was observed in
the films based on X-ray diffractometry, selected-area electron diffraction analysis and Raman spectroscopy
analyses. Increased light scattering of the spheres in visible region was observed by UV-VIS-NIR spectroscopy.
Photovoltaic performance of the operating N719-sensitized cells was tested using electrochemical impedance
spectroscopy and current density-voltage (J-V) curves under simulated AM1.5 spectrum. The 0.25 cm2 cells exhibited
photo-to-electric power efficiency of 4.9%, which is among noteworthy values for DSSCs with similar
photoanodic structures
PB  - Novi Sad : Faculty of Technology, University of Novi Sad
T2  - Processing and Application of Ceramics
T1  - Mesoporous TiO2 spheres as a photoanodic material in dye-sensitized solar cells
VL  - 12
IS  - 4
SP  - 374
EP  - 382
DO  - 10.2298/PAC1804374T
ER  - 

@article{
author = "Tasić, Nikola and Marinković Stanojević, Zorica and Branković, Zorica and Žunić, Milan and Lačnjevac, Uroš and Gilić, Martina and Novaković, Tatjana and Branković, Goran",
year = "2018",
abstract = "Mesoporous TiO2 films with spherical architectures and promising performance in dye-sensitized solar cells
(DSSCs) were prepared. The morphology of the films was investigated by scanning electron microscopy. Transmission
electron microscopy analysis of the spheres disclosed the elongated shape of sub-20 nm primary particles,
while BET analysis revealed their high surface area of 135m2/g. Anatase presence was observed in
the films based on X-ray diffractometry, selected-area electron diffraction analysis and Raman spectroscopy
analyses. Increased light scattering of the spheres in visible region was observed by UV-VIS-NIR spectroscopy.
Photovoltaic performance of the operating N719-sensitized cells was tested using electrochemical impedance
spectroscopy and current density-voltage (J-V) curves under simulated AM1.5 spectrum. The 0.25 cm2 cells exhibited
photo-to-electric power efficiency of 4.9%, which is among noteworthy values for DSSCs with similar
photoanodic structures",
publisher = "Novi Sad : Faculty of Technology, University of Novi Sad",
journal = "Processing and Application of Ceramics",
title = "Mesoporous TiO2 spheres as a photoanodic material in dye-sensitized solar cells",
volume = "12",
number = "4",
pages = "374-382",
doi = "10.2298/PAC1804374T"
}

Tasić, N., Marinković Stanojević, Z., Branković, Z., Žunić, M., Lačnjevac, U., Gilić, M., Novaković, T.,& Branković, G.. (2018). Mesoporous TiO2 spheres as a photoanodic material in dye-sensitized solar cells. in Processing and Application of Ceramics
Novi Sad : Faculty of Technology, University of Novi Sad., 12(4), 374-382.
https://doi.org/10.2298/PAC1804374T

Tasić N, Marinković Stanojević Z, Branković Z, Žunić M, Lačnjevac U, Gilić M, Novaković T, Branković G. Mesoporous TiO2 spheres as a photoanodic material in dye-sensitized solar cells. in Processing and Application of Ceramics. 2018;12(4):374-382.
doi:10.2298/PAC1804374T .

Tasić, Nikola, Marinković Stanojević, Zorica, Branković, Zorica, Žunić, Milan, Lačnjevac, Uroš, Gilić, Martina, Novaković, Tatjana, Branković, Goran, "Mesoporous TiO2 spheres as a photoanodic material in dye-sensitized solar cells" in Processing and Application of Ceramics, 12, no. 4 (2018):374-382,
https://doi.org/10.2298/PAC1804374T . .

TY  - JOUR
AU  - Jovic, B M
AU  - Jović, Vladimir D.
AU  - Lačnjevac, Uroš
AU  - Stevanović, Sanja
AU  - Kovac, J
AU  - Radovic, M
AU  - Krstajić, Nedeljko V.
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2012
AB  - In this work, the hydrogen evolution reaction (HER) was studied on Ru coated Ti2AlC electrodes in 1.0 mol dm(-3) H2SO4 at 25 degrees C. Ti2AlC was found to be a highly stable substrate in sulfuric acid solutions due to the formation of a passivating oxide layer on the surface, which was confirmed by the X-ray photoelectron spectroscopy (XPS) analysis of as-prepared and anodically treated Ti2AlC samples. Ru films were electrodeposited onto Ti2AlC substrates by cycling the potential of Ti2AlC in the solution containing 0.01 mol dm(-3) RuCl3 + 0.1 mol dm(-3) H2SO4 between -0.5 V and 0.4 V vs. a saturated calomel electrode (SCE) at the sweep rate of 20 mV s(-1). Four Ru/Ti2AlC samples were prepared, obtained at 5, 10, 15 and 20 cycles of Ru electrodeposition. Characterization of samples was performed by scanning electron microscopy (SEM) and cyclic voltammetry (CV), while the thickness of the electrodeposited Ru layers was determined by atomic force microscopy (AFM). It was found that the most compact sample with the thickness of about 0.42 mu m was obtained after 5 cycles. Electrochemical impedance spectroscopy (EIS) and steady-state polarization measurements showed that all Ru/Ti2AlC electrodes were exceptionally active for the HER. A Tafel slope of about -60 mV dec(-1) was observed on all polarization curves in the range of high cathodic current densities. Based on formal kinetics analysis, an appropriate mechanism for the HER on Ru/Ti2AlC was suggested.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Ru layers electrodeposited onto highly stable Ti2AlC substrates as cathodes for hydrogen evolution in sulfuric acid solutions
VL  - 766
SP  - 78
EP  - 86
DO  - 10.1016/j.jelechem.2016.01.038
ER  - 

@article{
author = "Jovic, B M and Jović, Vladimir D. and Lačnjevac, Uroš and Stevanović, Sanja and Kovac, J and Radovic, M and Krstajić, Nedeljko V.",
year = "2016",
abstract = "In this work, the hydrogen evolution reaction (HER) was studied on Ru coated Ti2AlC electrodes in 1.0 mol dm(-3) H2SO4 at 25 degrees C. Ti2AlC was found to be a highly stable substrate in sulfuric acid solutions due to the formation of a passivating oxide layer on the surface, which was confirmed by the X-ray photoelectron spectroscopy (XPS) analysis of as-prepared and anodically treated Ti2AlC samples. Ru films were electrodeposited onto Ti2AlC substrates by cycling the potential of Ti2AlC in the solution containing 0.01 mol dm(-3) RuCl3 + 0.1 mol dm(-3) H2SO4 between -0.5 V and 0.4 V vs. a saturated calomel electrode (SCE) at the sweep rate of 20 mV s(-1). Four Ru/Ti2AlC samples were prepared, obtained at 5, 10, 15 and 20 cycles of Ru electrodeposition. Characterization of samples was performed by scanning electron microscopy (SEM) and cyclic voltammetry (CV), while the thickness of the electrodeposited Ru layers was determined by atomic force microscopy (AFM). It was found that the most compact sample with the thickness of about 0.42 mu m was obtained after 5 cycles. Electrochemical impedance spectroscopy (EIS) and steady-state polarization measurements showed that all Ru/Ti2AlC electrodes were exceptionally active for the HER. A Tafel slope of about -60 mV dec(-1) was observed on all polarization curves in the range of high cathodic current densities. Based on formal kinetics analysis, an appropriate mechanism for the HER on Ru/Ti2AlC was suggested.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Ru layers electrodeposited onto highly stable Ti2AlC substrates as cathodes for hydrogen evolution in sulfuric acid solutions",
volume = "766",
pages = "78-86",
doi = "10.1016/j.jelechem.2016.01.038"
}

Jovic, B. M., Jović, V. D., Lačnjevac, U., Stevanović, S., Kovac, J., Radovic, M.,& Krstajić, N. V.. (2016). Ru layers electrodeposited onto highly stable Ti2AlC substrates as cathodes for hydrogen evolution in sulfuric acid solutions. in Journal of Electroanalytical Chemistry
Elsevier., 766, 78-86.
https://doi.org/10.1016/j.jelechem.2016.01.038

Jovic BM, Jović VD, Lačnjevac U, Stevanović S, Kovac J, Radovic M, Krstajić NV. Ru layers electrodeposited onto highly stable Ti2AlC substrates as cathodes for hydrogen evolution in sulfuric acid solutions. in Journal of Electroanalytical Chemistry. 2016;766:78-86.
doi:10.1016/j.jelechem.2016.01.038 .

Jovic, B M, Jović, Vladimir D., Lačnjevac, Uroš, Stevanović, Sanja, Kovac, J, Radovic, M, Krstajić, Nedeljko V., "Ru layers electrodeposited onto highly stable Ti2AlC substrates as cathodes for hydrogen evolution in sulfuric acid solutions" in Journal of Electroanalytical Chemistry, 766 (2016):78-86,
https://doi.org/10.1016/j.jelechem.2016.01.038 . .

TY  - JOUR
AU  - Jovic, B M
AU  - Jović, Vladimir D.
AU  - Lačnjevac, Uroš
AU  - Stevanović, Sanja
AU  - Kovac, J
AU  - Radovic, M
AU  - Krstajić, Nedeljko V.
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4297
AB  - In this work, the hydrogen evolution reaction (HER) was studied on Ru coated Ti2AlC electrodes in 1.0 mol dm(-3) H2SO4 at 25 degrees C. Ti2AlC was found to be a highly stable substrate in sulfuric acid solutions due to the formation of a passivating oxide layer on the surface, which was confirmed by the X-ray photoelectron spectroscopy (XPS) analysis of as-prepared and anodically treated Ti2AlC samples. Ru films were electrodeposited onto Ti2AlC substrates by cycling the potential of Ti2AlC in the solution containing 0.01 mol dm(-3) RuCl3 + 0.1 mol dm(-3) H2SO4 between -0.5 V and 0.4 V vs. a saturated calomel electrode (SCE) at the sweep rate of 20 mV s(-1). Four Ru/Ti2AlC samples were prepared, obtained at 5, 10, 15 and 20 cycles of Ru electrodeposition. Characterization of samples was performed by scanning electron microscopy (SEM) and cyclic voltammetry (CV), while the thickness of the electrodeposited Ru layers was determined by atomic force microscopy (AFM). It was found that the most compact sample with the thickness of about 0.42 mu m was obtained after 5 cycles. Electrochemical impedance spectroscopy (EIS) and steady-state polarization measurements showed that all Ru/Ti2AlC electrodes were exceptionally active for the HER. A Tafel slope of about -60 mV dec(-1) was observed on all polarization curves in the range of high cathodic current densities. Based on formal kinetics analysis, an appropriate mechanism for the HER on Ru/Ti2AlC was suggested.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Ru layers electrodeposited onto highly stable Ti2AlC substrates as cathodes for hydrogen evolution in sulfuric acid solutions
VL  - 766
SP  - 78
EP  - 86
DO  - 10.1016/j.jelechem.2016.01.038
ER  - 

@article{
author = "Jovic, B M and Jović, Vladimir D. and Lačnjevac, Uroš and Stevanović, Sanja and Kovac, J and Radovic, M and Krstajić, Nedeljko V.",
year = "2016",
abstract = "In this work, the hydrogen evolution reaction (HER) was studied on Ru coated Ti2AlC electrodes in 1.0 mol dm(-3) H2SO4 at 25 degrees C. Ti2AlC was found to be a highly stable substrate in sulfuric acid solutions due to the formation of a passivating oxide layer on the surface, which was confirmed by the X-ray photoelectron spectroscopy (XPS) analysis of as-prepared and anodically treated Ti2AlC samples. Ru films were electrodeposited onto Ti2AlC substrates by cycling the potential of Ti2AlC in the solution containing 0.01 mol dm(-3) RuCl3 + 0.1 mol dm(-3) H2SO4 between -0.5 V and 0.4 V vs. a saturated calomel electrode (SCE) at the sweep rate of 20 mV s(-1). Four Ru/Ti2AlC samples were prepared, obtained at 5, 10, 15 and 20 cycles of Ru electrodeposition. Characterization of samples was performed by scanning electron microscopy (SEM) and cyclic voltammetry (CV), while the thickness of the electrodeposited Ru layers was determined by atomic force microscopy (AFM). It was found that the most compact sample with the thickness of about 0.42 mu m was obtained after 5 cycles. Electrochemical impedance spectroscopy (EIS) and steady-state polarization measurements showed that all Ru/Ti2AlC electrodes were exceptionally active for the HER. A Tafel slope of about -60 mV dec(-1) was observed on all polarization curves in the range of high cathodic current densities. Based on formal kinetics analysis, an appropriate mechanism for the HER on Ru/Ti2AlC was suggested.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Ru layers electrodeposited onto highly stable Ti2AlC substrates as cathodes for hydrogen evolution in sulfuric acid solutions",
volume = "766",
pages = "78-86",
doi = "10.1016/j.jelechem.2016.01.038"
}

Jovic, B. M., Jović, V. D., Lačnjevac, U., Stevanović, S., Kovac, J., Radovic, M.,& Krstajić, N. V.. (2016). Ru layers electrodeposited onto highly stable Ti2AlC substrates as cathodes for hydrogen evolution in sulfuric acid solutions. in Journal of Electroanalytical Chemistry
Elsevier., 766, 78-86.
https://doi.org/10.1016/j.jelechem.2016.01.038

Jovic BM, Jović VD, Lačnjevac U, Stevanović S, Kovac J, Radovic M, Krstajić NV. Ru layers electrodeposited onto highly stable Ti2AlC substrates as cathodes for hydrogen evolution in sulfuric acid solutions. in Journal of Electroanalytical Chemistry. 2016;766:78-86.
doi:10.1016/j.jelechem.2016.01.038 .

Jovic, B M, Jović, Vladimir D., Lačnjevac, Uroš, Stevanović, Sanja, Kovac, J, Radovic, M, Krstajić, Nedeljko V., "Ru layers electrodeposited onto highly stable Ti2AlC substrates as cathodes for hydrogen evolution in sulfuric acid solutions" in Journal of Electroanalytical Chemistry, 766 (2016):78-86,
https://doi.org/10.1016/j.jelechem.2016.01.038 . .

TY  - JOUR
AU  - Obradović, Maja
AU  - Stancic, Z M
AU  - Lačnjevac, Uroš
AU  - Radmilović, Vuk V.
AU  - Gavrilović-Wohlmuther, Aleksandra
AU  - Radmilović, Velimir R.
AU  - Gojković, Snežana Lj.
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2001
AB  - Pd-Ni/C catalyst was synthesized employing a borohydride reduction method. The high area Ni was first dispersed on the carbon support and then modified by Pd nanoparticles. Transmission electron microscopy confirmed relatively even distribution of Ni across the carbon support with discrete palladium particles of about 3.3 nm mean diameter on it. Cyclic voltammetry confirmed the presence of Ni on the catalyst surface. The activity of the Pd-Ni/C catalysts for ethanol oxidation reaction (EOR) in alkaline solution was tested under the potentiodynamic and potentiostatic conditions and the results were compared to those obtained on the Pd/C catalyst. It was found that Pd-Ni/C is more active for the EOR compared to Pd/C by a factor up to 3, depending on the type of experiments and whether specific activity or mass activity are considered. During the potentiodynamic stability test an interesting phenomenon of activation of Pd-Ni/C catalyst was observed. It was found that maximum activity is attained after fifty cycles with the positive potential limit of 1.2 V, regardless of whether they were performed in the electrolyte with or without ethanol. It was postulated that potential cycling of the Pd-Ni surface causes reorganization of the catalyst surface bringing Pd and Ni sites to a more suitable arrangement for the efficient ethanol oxidation.
PB  - Elsevier
T2  - Applied Catalysis B-Environmental
T1  - Electrochemical oxidation of ethanol on palladium-nickel nanocatalyst in alkaline media
VL  - 189
SP  - 110
EP  - 118
DO  - 10.1016/j.apcatb.2016.02.039
ER  - 

@article{
author = "Obradović, Maja and Stancic, Z M and Lačnjevac, Uroš and Radmilović, Vuk V. and Gavrilović-Wohlmuther, Aleksandra and Radmilović, Velimir R. and Gojković, Snežana Lj.",
year = "2016",
abstract = "Pd-Ni/C catalyst was synthesized employing a borohydride reduction method. The high area Ni was first dispersed on the carbon support and then modified by Pd nanoparticles. Transmission electron microscopy confirmed relatively even distribution of Ni across the carbon support with discrete palladium particles of about 3.3 nm mean diameter on it. Cyclic voltammetry confirmed the presence of Ni on the catalyst surface. The activity of the Pd-Ni/C catalysts for ethanol oxidation reaction (EOR) in alkaline solution was tested under the potentiodynamic and potentiostatic conditions and the results were compared to those obtained on the Pd/C catalyst. It was found that Pd-Ni/C is more active for the EOR compared to Pd/C by a factor up to 3, depending on the type of experiments and whether specific activity or mass activity are considered. During the potentiodynamic stability test an interesting phenomenon of activation of Pd-Ni/C catalyst was observed. It was found that maximum activity is attained after fifty cycles with the positive potential limit of 1.2 V, regardless of whether they were performed in the electrolyte with or without ethanol. It was postulated that potential cycling of the Pd-Ni surface causes reorganization of the catalyst surface bringing Pd and Ni sites to a more suitable arrangement for the efficient ethanol oxidation.",
publisher = "Elsevier",
journal = "Applied Catalysis B-Environmental",
title = "Electrochemical oxidation of ethanol on palladium-nickel nanocatalyst in alkaline media",
volume = "189",
pages = "110-118",
doi = "10.1016/j.apcatb.2016.02.039"
}

Obradović, M., Stancic, Z. M., Lačnjevac, U., Radmilović, V. V., Gavrilović-Wohlmuther, A., Radmilović, V. R.,& Gojković, S. Lj.. (2016). Electrochemical oxidation of ethanol on palladium-nickel nanocatalyst in alkaline media. in Applied Catalysis B-Environmental
Elsevier., 189, 110-118.
https://doi.org/10.1016/j.apcatb.2016.02.039

Obradović M, Stancic ZM, Lačnjevac U, Radmilović VV, Gavrilović-Wohlmuther A, Radmilović VR, Gojković SL. Electrochemical oxidation of ethanol on palladium-nickel nanocatalyst in alkaline media. in Applied Catalysis B-Environmental. 2016;189:110-118.
doi:10.1016/j.apcatb.2016.02.039 .

Obradović, Maja, Stancic, Z M, Lačnjevac, Uroš, Radmilović, Vuk V., Gavrilović-Wohlmuther, Aleksandra, Radmilović, Velimir R., Gojković, Snežana Lj., "Electrochemical oxidation of ethanol on palladium-nickel nanocatalyst in alkaline media" in Applied Catalysis B-Environmental, 189 (2016):110-118,
https://doi.org/10.1016/j.apcatb.2016.02.039 . .

TY  - CONF
AU  - Gajić Krstajić, Ljiljana
AU  - Zabinski, Piotr
AU  - Radmilović, Velimir R.
AU  - Ercius, Peter
AU  - Krstajić Pajić, Mila N.
AU  - Lačnjevac, Uroš
AU  - Krstajić, Nedeljko
AU  - Elezović, Nevenka
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/895
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2862
AB  - Tungsten carbide was prepared by polycondensation of resorcinol and formaldehyde in the presence cetyltrimethylammonium bromide (CTABr) surfactant. Pd nanocatalyst at this support was synthesized by borohydride reduction method. The obtained materials were characterized by XRD, HRTEM, EELS, XPS and electrochemical measurements. TEM analysis revealed Pd nanoparticles size in the range of a few nanometers, even the clusters of Pd atoms. X-Ray Photoelectron Spectroscopy was applied to determine surface composition of the substrates. The presence of palladium based species was revealed. The catalytic activity for the hydrogen oxidation reaction and oxygen reduction were investigated in 0.5 M HClO4 by cyclic voltammetry and linear sweep voltammetry at the rotating disc electrode. The catalysts’ activities were compared to the carbon supported Pd nanoparticles (Vulcan XC 72). WC supported Pd nanoparticles have shown higher CO tolerance, compared even to Pt based catalyst. Acknowledgements: This work was financially supported by Ministry of Education, Science and Technological Development, Republic of Serbia, contract No. 172054.The authors would like to acknowledge networking support by the COST Action MP1407.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016
T1  - Synthesis and characterization of Pd nanocatalyst at tungsten carbide based support for fuel cells application
SP  - 71
EP  - 71
UR  - https://hdl.handle.net/21.15107/rcub_dais_895
ER  - 

@conference{
author = "Gajić Krstajić, Ljiljana and Zabinski, Piotr and Radmilović, Velimir R. and Ercius, Peter and Krstajić Pajić, Mila N. and Lačnjevac, Uroš and Krstajić, Nedeljko and Elezović, Nevenka",
year = "2016",
abstract = "Tungsten carbide was prepared by polycondensation of resorcinol and formaldehyde in the presence cetyltrimethylammonium bromide (CTABr) surfactant. Pd nanocatalyst at this support was synthesized by borohydride reduction method. The obtained materials were characterized by XRD, HRTEM, EELS, XPS and electrochemical measurements. TEM analysis revealed Pd nanoparticles size in the range of a few nanometers, even the clusters of Pd atoms. X-Ray Photoelectron Spectroscopy was applied to determine surface composition of the substrates. The presence of palladium based species was revealed. The catalytic activity for the hydrogen oxidation reaction and oxygen reduction were investigated in 0.5 M HClO4 by cyclic voltammetry and linear sweep voltammetry at the rotating disc electrode. The catalysts’ activities were compared to the carbon supported Pd nanoparticles (Vulcan XC 72). WC supported Pd nanoparticles have shown higher CO tolerance, compared even to Pt based catalyst. Acknowledgements: This work was financially supported by Ministry of Education, Science and Technological Development, Republic of Serbia, contract No. 172054.The authors would like to acknowledge networking support by the COST Action MP1407.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016",
title = "Synthesis and characterization of Pd nanocatalyst at tungsten carbide based support for fuel cells application",
pages = "71-71",
url = "https://hdl.handle.net/21.15107/rcub_dais_895"
}

Gajić Krstajić, L., Zabinski, P., Radmilović, V. R., Ercius, P., Krstajić Pajić, M. N., Lačnjevac, U., Krstajić, N.,& Elezović, N.. (2016). Synthesis and characterization of Pd nanocatalyst at tungsten carbide based support for fuel cells application. in Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016
Belgrade : Materials Research Society of Serbia., 71-71.
https://hdl.handle.net/21.15107/rcub_dais_895

Gajić Krstajić L, Zabinski P, Radmilović VR, Ercius P, Krstajić Pajić MN, Lačnjevac U, Krstajić N, Elezović N. Synthesis and characterization of Pd nanocatalyst at tungsten carbide based support for fuel cells application. in Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016. 2016;:71-71.
https://hdl.handle.net/21.15107/rcub_dais_895 .

Gajić Krstajić, Ljiljana, Zabinski, Piotr, Radmilović, Velimir R., Ercius, Peter, Krstajić Pajić, Mila N., Lačnjevac, Uroš, Krstajić, Nedeljko, Elezović, Nevenka, "Synthesis and characterization of Pd nanocatalyst at tungsten carbide based support for fuel cells application" in Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016 (2016):71-71,
https://hdl.handle.net/21.15107/rcub_dais_895 .

TY  - JOUR
AU  - Tasic, Nikola
AU  - Stanojević Marinković, Zorica
AU  - Branković, Zorica
AU  - Lačnjevac, Uroš
AU  - Ribić, Vesna
AU  - Žunić, Milan
AU  - Novaković, Tatjana
AU  - Podlogar, Matejka
AU  - Branković, Goran
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1882
AB  - In this paper, we propose a novel method for preparation of high surface area titania nanoparticles, and investigate their photovoltaic performance in dye sensitized solar cells (DSSCs). The precursor compound titanium(IV)-isopropoxide is hydrolyzed in the presence of nonionic surfactant (Triton X100) and ethylenediaminetetraacetic acid sodium salt (EDTA-Na-2) and thermally transformed into gel. The gel is autoclaved, resulting in submicronic micelles which are further processed into mesoporous films. The films are deposited from paste, composed of ultrasonically broken micelles and the organic ingredients. The crack-free film structures, composed of sub-25 nm pure anatase particles are observed using the appropriate instrumental techniques: scanning electron microscopy (SEM), field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), X-ray diffractometry (XRD), UV-VIS-NIR spectroscopy. The large surface area of 158 m(2) g (1) and mesoporosity are confirmed using the data obtained from the nitrogen adsorption-desorption isotherm. The photovoltaic performance of the operating N719-sensitized solar devices are tested using electrochemical impedance spectroscopy (EIS), open-circuit voltage decay (OCVD) and by recording current density-voltage (J-V) curves. The cell exhibits promising photocurrent density up to 11.7 mA cm (2), and the photo-to-electric power efficiency of 5.22%, for cell area of 0.24 cm(2), under 100 mW cm (2) halogen light source.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Electrochimica Acta
T1  - Mesoporous films prepared from synthesized TiO2 nanoparticles and their application in dye-sensitized solar cells (DSSCs)
VL  - 210
SP  - 606
EP  - 614
DO  - 10.1016/j.electacta.2016.05.179
ER  - 

@article{
author = "Tasic, Nikola and Stanojević Marinković, Zorica and Branković, Zorica and Lačnjevac, Uroš and Ribić, Vesna and Žunić, Milan and Novaković, Tatjana and Podlogar, Matejka and Branković, Goran",
year = "2016",
abstract = "In this paper, we propose a novel method for preparation of high surface area titania nanoparticles, and investigate their photovoltaic performance in dye sensitized solar cells (DSSCs). The precursor compound titanium(IV)-isopropoxide is hydrolyzed in the presence of nonionic surfactant (Triton X100) and ethylenediaminetetraacetic acid sodium salt (EDTA-Na-2) and thermally transformed into gel. The gel is autoclaved, resulting in submicronic micelles which are further processed into mesoporous films. The films are deposited from paste, composed of ultrasonically broken micelles and the organic ingredients. The crack-free film structures, composed of sub-25 nm pure anatase particles are observed using the appropriate instrumental techniques: scanning electron microscopy (SEM), field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), X-ray diffractometry (XRD), UV-VIS-NIR spectroscopy. The large surface area of 158 m(2) g (1) and mesoporosity are confirmed using the data obtained from the nitrogen adsorption-desorption isotherm. The photovoltaic performance of the operating N719-sensitized solar devices are tested using electrochemical impedance spectroscopy (EIS), open-circuit voltage decay (OCVD) and by recording current density-voltage (J-V) curves. The cell exhibits promising photocurrent density up to 11.7 mA cm (2), and the photo-to-electric power efficiency of 5.22%, for cell area of 0.24 cm(2), under 100 mW cm (2) halogen light source.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Electrochimica Acta",
title = "Mesoporous films prepared from synthesized TiO2 nanoparticles and their application in dye-sensitized solar cells (DSSCs)",
volume = "210",
pages = "606-614",
doi = "10.1016/j.electacta.2016.05.179"
}

Tasic, N., Stanojević Marinković, Z., Branković, Z., Lačnjevac, U., Ribić, V., Žunić, M., Novaković, T., Podlogar, M.,& Branković, G.. (2016). Mesoporous films prepared from synthesized TiO2 nanoparticles and their application in dye-sensitized solar cells (DSSCs). in Electrochimica Acta
Oxford : Pergamon-Elsevier Science Ltd., 210, 606-614.
https://doi.org/10.1016/j.electacta.2016.05.179

Tasic N, Stanojević Marinković Z, Branković Z, Lačnjevac U, Ribić V, Žunić M, Novaković T, Podlogar M, Branković G. Mesoporous films prepared from synthesized TiO2 nanoparticles and their application in dye-sensitized solar cells (DSSCs). in Electrochimica Acta. 2016;210:606-614.
doi:10.1016/j.electacta.2016.05.179 .

Tasic, Nikola, Stanojević Marinković, Zorica, Branković, Zorica, Lačnjevac, Uroš, Ribić, Vesna, Žunić, Milan, Novaković, Tatjana, Podlogar, Matejka, Branković, Goran, "Mesoporous films prepared from synthesized TiO2 nanoparticles and their application in dye-sensitized solar cells (DSSCs)" in Electrochimica Acta, 210 (2016):606-614,
https://doi.org/10.1016/j.electacta.2016.05.179 . .

TY  - JOUR
AU  - Obradović, Maja
AU  - Lačnjevac, Uroš
AU  - Babic, B M
AU  - Ercius, P
AU  - Radmilović, Velimir R.
AU  - Krstajić, Nedeljko V.
AU  - Gojković, Snežana Lj.
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1763
AB  - Two binary Ru-Ti oxides, Rum Ti0.9O2 and Ru0.7Ti0.3O2, were synthesized by the sol-gel method and used as an electrocatalyst support. The system was characterized by XRD, EDS, TEM and cyclic voltammetry. The Rum Ti0.9O2 and Ru0.7Ti0.3O2 consist of two phases of anatase and rutile structure. An average size of the Pt nanoparticles supported on them is similar to 3.5 nm and they are deposited on both Ru and Ti-rich domains. The supports exhibited good conductivity and electrochemical stability. The onset potentials of COads oxidation on the synthesized catalysts and on commercial PtRu/C are similar to each other and lower than that on Pt/C. This suggests that in Pt/Rum Ti0.9O2 and Pt/Ru0(.7)Ti(0.3)O(2) the Pt nanoparticles are in close contact with Ru atoms from the support, which enables the bifunctional mechanism. The activity and stability of the catalysts for methanol oxidation were examined under potentiodynamic and potentiostatic conditions. While the activity of Pt/Rum Ti0.9O2 is unsatisfactory, the performance of Pt/Ru0.7Ti0.3O2 is comparable to PtRu/C. For example, in the potentiostatic test at 0.5 V the activities after 25 min are 0.035 mA cm(-2) and 0.022 mA cm(-2) for Pt/Ru0.7Ti0.3O2 and PtRu/C, respectively. In potentiodynamic test the activities at 0.5V after 250 cycles are around 0.02 mA cm(-2) for both catalysts.
PB  - Elsevier
T2  - Applied Catalysis B-Environmental
T1  - RuxTi1-xO2 as the support for Pt nanoparticles: Electrocatalysis of methanol oxidation
VL  - 170
SP  - 144
EP  - 152
DO  - 10.1016/j.apcatb.2015.01.038
ER  - 

@article{
author = "Obradović, Maja and Lačnjevac, Uroš and Babic, B M and Ercius, P and Radmilović, Velimir R. and Krstajić, Nedeljko V. and Gojković, Snežana Lj.",
year = "2015",
abstract = "Two binary Ru-Ti oxides, Rum Ti0.9O2 and Ru0.7Ti0.3O2, were synthesized by the sol-gel method and used as an electrocatalyst support. The system was characterized by XRD, EDS, TEM and cyclic voltammetry. The Rum Ti0.9O2 and Ru0.7Ti0.3O2 consist of two phases of anatase and rutile structure. An average size of the Pt nanoparticles supported on them is similar to 3.5 nm and they are deposited on both Ru and Ti-rich domains. The supports exhibited good conductivity and electrochemical stability. The onset potentials of COads oxidation on the synthesized catalysts and on commercial PtRu/C are similar to each other and lower than that on Pt/C. This suggests that in Pt/Rum Ti0.9O2 and Pt/Ru0(.7)Ti(0.3)O(2) the Pt nanoparticles are in close contact with Ru atoms from the support, which enables the bifunctional mechanism. The activity and stability of the catalysts for methanol oxidation were examined under potentiodynamic and potentiostatic conditions. While the activity of Pt/Rum Ti0.9O2 is unsatisfactory, the performance of Pt/Ru0.7Ti0.3O2 is comparable to PtRu/C. For example, in the potentiostatic test at 0.5 V the activities after 25 min are 0.035 mA cm(-2) and 0.022 mA cm(-2) for Pt/Ru0.7Ti0.3O2 and PtRu/C, respectively. In potentiodynamic test the activities at 0.5V after 250 cycles are around 0.02 mA cm(-2) for both catalysts.",
publisher = "Elsevier",
journal = "Applied Catalysis B-Environmental",
title = "RuxTi1-xO2 as the support for Pt nanoparticles: Electrocatalysis of methanol oxidation",
volume = "170",
pages = "144-152",
doi = "10.1016/j.apcatb.2015.01.038"
}

Obradović, M., Lačnjevac, U., Babic, B. M., Ercius, P., Radmilović, V. R., Krstajić, N. V.,& Gojković, S. Lj.. (2015). RuxTi1-xO2 as the support for Pt nanoparticles: Electrocatalysis of methanol oxidation. in Applied Catalysis B-Environmental
Elsevier., 170, 144-152.
https://doi.org/10.1016/j.apcatb.2015.01.038

Obradović M, Lačnjevac U, Babic BM, Ercius P, Radmilović VR, Krstajić NV, Gojković SL. RuxTi1-xO2 as the support for Pt nanoparticles: Electrocatalysis of methanol oxidation. in Applied Catalysis B-Environmental. 2015;170:144-152.
doi:10.1016/j.apcatb.2015.01.038 .

Obradović, Maja, Lačnjevac, Uroš, Babic, B M, Ercius, P, Radmilović, Velimir R., Krstajić, Nedeljko V., Gojković, Snežana Lj., "RuxTi1-xO2 as the support for Pt nanoparticles: Electrocatalysis of methanol oxidation" in Applied Catalysis B-Environmental, 170 (2015):144-152,
https://doi.org/10.1016/j.apcatb.2015.01.038 . .

TY  - JOUR
AU  - Nikolić, Nebojša D.
AU  - Ivanović, Evica
AU  - Branković, Goran
AU  - Lačnjevac, Uroš
AU  - Stevanović, Sanja
AU  - Stevanović, Jasmina
AU  - Pavlović, Miomir
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1639
AB  - Lead granules synthesized by the potentiostatic regime of electrolysis were characterized by the scanning electron microscopy technique. Effect of the different parameters of electrolysis, such as solution composition, overpotential of electrodeposition, and quantity of the electricity, on lead granular growth has been systematically investigated. Aside from the electrochemical aspects of lead granular growth, crystallographic aspects of the obtained granules were also analyzed. In the dependence of the electrodeposition conditions, granules of various shapes were obtained. The granules, such as octahedrons and hexagons, as well as many various types of twinned particles: single-twinned, multiply-twinned, lamellar-twinned, and many other complicated shapes denoted as polyparticles, were synthesized through regulation of the parameters of electrolysis. Increasing both the concentration of Pb2+ ions and overpotential of the electrodeposition favored the formation of more complicated forms. Formation of granules of specified crystallographic characteristics was also correlated with the basic principle of metal electrocrystallization.
PB  - Springer, New York
T2  - Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science
T1  - Electrochemical and Crystallographic Aspects of Lead Granular Growth
VL  - 46
IS  - 4
SP  - 1760
EP  - 1774
DO  - 10.1007/s11663-015-0385-z
ER  - 

@article{
author = "Nikolić, Nebojša D. and Ivanović, Evica and Branković, Goran and Lačnjevac, Uroš and Stevanović, Sanja and Stevanović, Jasmina and Pavlović, Miomir",
year = "2015",
abstract = "Lead granules synthesized by the potentiostatic regime of electrolysis were characterized by the scanning electron microscopy technique. Effect of the different parameters of electrolysis, such as solution composition, overpotential of electrodeposition, and quantity of the electricity, on lead granular growth has been systematically investigated. Aside from the electrochemical aspects of lead granular growth, crystallographic aspects of the obtained granules were also analyzed. In the dependence of the electrodeposition conditions, granules of various shapes were obtained. The granules, such as octahedrons and hexagons, as well as many various types of twinned particles: single-twinned, multiply-twinned, lamellar-twinned, and many other complicated shapes denoted as polyparticles, were synthesized through regulation of the parameters of electrolysis. Increasing both the concentration of Pb2+ ions and overpotential of the electrodeposition favored the formation of more complicated forms. Formation of granules of specified crystallographic characteristics was also correlated with the basic principle of metal electrocrystallization.",
publisher = "Springer, New York",
journal = "Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science",
title = "Electrochemical and Crystallographic Aspects of Lead Granular Growth",
volume = "46",
number = "4",
pages = "1760-1774",
doi = "10.1007/s11663-015-0385-z"
}

Nikolić, N. D., Ivanović, E., Branković, G., Lačnjevac, U., Stevanović, S., Stevanović, J.,& Pavlović, M.. (2015). Electrochemical and Crystallographic Aspects of Lead Granular Growth. in Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science
Springer, New York., 46(4), 1760-1774.
https://doi.org/10.1007/s11663-015-0385-z

Nikolić ND, Ivanović E, Branković G, Lačnjevac U, Stevanović S, Stevanović J, Pavlović M. Electrochemical and Crystallographic Aspects of Lead Granular Growth. in Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science. 2015;46(4):1760-1774.
doi:10.1007/s11663-015-0385-z .

Nikolić, Nebojša D., Ivanović, Evica, Branković, Goran, Lačnjevac, Uroš, Stevanović, Sanja, Stevanović, Jasmina, Pavlović, Miomir, "Electrochemical and Crystallographic Aspects of Lead Granular Growth" in Metallurgical and Materials Transactions B-Process Metallurgy and Materials Processing Science, 46, no. 4 (2015):1760-1774,
https://doi.org/10.1007/s11663-015-0385-z . .

TY  - JOUR
AU  - Krstajić, Mila N.
AU  - Obradović, Maja
AU  - Babić, Biljana M.
AU  - Radmilović, Velimir R.
AU  - Lačnjevac, Uroš
AU  - Krstajić, Nedeljko V.
AU  - Gojković, Snežana Lj.
PY  - 2013
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1232
AB  - Ru-doped SnO2 powder, (RuxSn1-x)O2, with a Sn:Ru atomic ratio of 9:1 was synthesized and used as a support for Pt nanoparticles (30 mass % loading). The (RuxSn1-x)O2 support and the Pt/(RuxSn1-x)O2 catalyst were characterized by X-ray diffraction measurements, energy dispersive X-ray spectroscopy and transmission electron microscopy (TEM). The (RuxSn1-x)O2 was found to be a two-phase material consisting of probably a solid solution of RuO2 in SnO2 and pure RuO2. The average Pt particle size determined by TEM was 5.3 nm. Cyclic voltammetry of Pt/(RuxSn1-x)O2 indicated good conductivity of the support and displayed the usual features of Pt. The results of the electrochemical oxidation of COads and methanol on Pt/(RuxSn1-x)O2 were compared with those on commercial Pt/C and PtRu/C catalysts. Oxidation of COads on Pt/(RuxSn1-x)O2 starts at lower positive potentials than on PtRu/C and Pt/C. Potentiodynamic polarization curves and chronoamperometric curves of methanol oxidation indicated higher initial activity of the Pt/(RuxSn1-x)O2 catalyst compared to PtRu/C, but also a greater loss in current density over time. A potentiodynamic stability test of the catalysts revealed that deactivation of Pt/(RuxSn1-x)O2 and Pt/C was primarily caused by poisoning of the Pt surface by residues of methanol oxidation, which mostly occurred during the first potential cycle. In the case of PtRu/C, the poisoning of the surface was minor and deactivation was caused by surface area loss of the PtRu.
AB  - Sintetizovan je prah SnO2 dopovan rutenijumom, (RuxSn1-x)O2, sa atomskim odnosom Sn:Ru od 9:1, i korišćen kao nosač nanočestica platine. Udeo Pt u dobijenom katalizatoru, Pt/(RuxSn1-x)O2, bio je 30 mas. %. Nosač i katalizator su karakterisani difrakcijom X-zraka, energetski disperzivnom spektroskopijom X-zraka i transmisionom elektronskom mikroskopijom (TEM). Pokazano je da je (RuxSn1-x)O2 dvofazni materijal koji verovatno sadrži čvrst rastvor RuO2 u SnO2 i čist RuO2. Prosečna veličina zrna Pt, određena TEM analizom, iznosi 5,3 nm. Ciklična voltametrija Pt/(RuxSn1-x)O2 ukazala je na dobru provodnost nosača katalizatora i na uobičajene karakteristike Pt. Upoređeni su rezultati elektrohemijske oksidacije COads na Pt/(RuxSn1-x)O2, Pt/C i PtRu/C. Oksidacija COads na Pt/(RuxSn1-x)O2 počinje na negativnijim potencijalima u odnosu na PtRu/C i Pt/C. Potenciodinamičke polarizacione krive i hronoamperometrijske krive za oksidaciju metanola ukazuju na veću početnu aktivnost katalizatora Pt/(RuxSn1-x)O2 u odnosu na PtRu/C, ali i na veće smanjenje gustine struje tokom vremena. Test potenciodinamičke stabilnosti katalizatora je ukazao da je smanjenje aktivnosti Pt/(RuxSn1-x)O2 i Pt/C prvenstveno prouzrokovano trovanjem površine Pt proizvodima nepotpune oksidacije metanola, koje se uglavnom odigrava tokom prvog ciklusa. Kod PtRu/C trovanje površine je minimalno, a smanjenje aktivnosti je prouzrokovano smanjenjem elektrohemijski aktivne površine PtRu.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Electrochemical oxidation of methanol on Pt/(RuxSn1-x)O2 nanocatalyst
T1  - Elektrohemijska oksidacija metanola na katalizatoru Pt/(RuxSn1-x)O2
VL  - 78
IS  - 11
SP  - 1703
EP  - 1716
DO  - 10.2298/JSC130718091K
ER  - 

@article{
author = "Krstajić, Mila N. and Obradović, Maja and Babić, Biljana M. and Radmilović, Velimir R. and Lačnjevac, Uroš and Krstajić, Nedeljko V. and Gojković, Snežana Lj.",
year = "2013",
abstract = "Ru-doped SnO2 powder, (RuxSn1-x)O2, with a Sn:Ru atomic ratio of 9:1 was synthesized and used as a support for Pt nanoparticles (30 mass % loading). The (RuxSn1-x)O2 support and the Pt/(RuxSn1-x)O2 catalyst were characterized by X-ray diffraction measurements, energy dispersive X-ray spectroscopy and transmission electron microscopy (TEM). The (RuxSn1-x)O2 was found to be a two-phase material consisting of probably a solid solution of RuO2 in SnO2 and pure RuO2. The average Pt particle size determined by TEM was 5.3 nm. Cyclic voltammetry of Pt/(RuxSn1-x)O2 indicated good conductivity of the support and displayed the usual features of Pt. The results of the electrochemical oxidation of COads and methanol on Pt/(RuxSn1-x)O2 were compared with those on commercial Pt/C and PtRu/C catalysts. Oxidation of COads on Pt/(RuxSn1-x)O2 starts at lower positive potentials than on PtRu/C and Pt/C. Potentiodynamic polarization curves and chronoamperometric curves of methanol oxidation indicated higher initial activity of the Pt/(RuxSn1-x)O2 catalyst compared to PtRu/C, but also a greater loss in current density over time. A potentiodynamic stability test of the catalysts revealed that deactivation of Pt/(RuxSn1-x)O2 and Pt/C was primarily caused by poisoning of the Pt surface by residues of methanol oxidation, which mostly occurred during the first potential cycle. In the case of PtRu/C, the poisoning of the surface was minor and deactivation was caused by surface area loss of the PtRu., Sintetizovan je prah SnO2 dopovan rutenijumom, (RuxSn1-x)O2, sa atomskim odnosom Sn:Ru od 9:1, i korišćen kao nosač nanočestica platine. Udeo Pt u dobijenom katalizatoru, Pt/(RuxSn1-x)O2, bio je 30 mas. %. Nosač i katalizator su karakterisani difrakcijom X-zraka, energetski disperzivnom spektroskopijom X-zraka i transmisionom elektronskom mikroskopijom (TEM). Pokazano je da je (RuxSn1-x)O2 dvofazni materijal koji verovatno sadrži čvrst rastvor RuO2 u SnO2 i čist RuO2. Prosečna veličina zrna Pt, određena TEM analizom, iznosi 5,3 nm. Ciklična voltametrija Pt/(RuxSn1-x)O2 ukazala je na dobru provodnost nosača katalizatora i na uobičajene karakteristike Pt. Upoređeni su rezultati elektrohemijske oksidacije COads na Pt/(RuxSn1-x)O2, Pt/C i PtRu/C. Oksidacija COads na Pt/(RuxSn1-x)O2 počinje na negativnijim potencijalima u odnosu na PtRu/C i Pt/C. Potenciodinamičke polarizacione krive i hronoamperometrijske krive za oksidaciju metanola ukazuju na veću početnu aktivnost katalizatora Pt/(RuxSn1-x)O2 u odnosu na PtRu/C, ali i na veće smanjenje gustine struje tokom vremena. Test potenciodinamičke stabilnosti katalizatora je ukazao da je smanjenje aktivnosti Pt/(RuxSn1-x)O2 i Pt/C prvenstveno prouzrokovano trovanjem površine Pt proizvodima nepotpune oksidacije metanola, koje se uglavnom odigrava tokom prvog ciklusa. Kod PtRu/C trovanje površine je minimalno, a smanjenje aktivnosti je prouzrokovano smanjenjem elektrohemijski aktivne površine PtRu.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Electrochemical oxidation of methanol on Pt/(RuxSn1-x)O2 nanocatalyst, Elektrohemijska oksidacija metanola na katalizatoru Pt/(RuxSn1-x)O2",
volume = "78",
number = "11",
pages = "1703-1716",
doi = "10.2298/JSC130718091K"
}

Krstajić, M. N., Obradović, M., Babić, B. M., Radmilović, V. R., Lačnjevac, U., Krstajić, N. V.,& Gojković, S. Lj.. (2013). Electrochemical oxidation of methanol on Pt/(RuxSn1-x)O2 nanocatalyst. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 78(11), 1703-1716.
https://doi.org/10.2298/JSC130718091K

Krstajić MN, Obradović M, Babić BM, Radmilović VR, Lačnjevac U, Krstajić NV, Gojković SL. Electrochemical oxidation of methanol on Pt/(RuxSn1-x)O2 nanocatalyst. in Journal of the Serbian Chemical Society. 2013;78(11):1703-1716.
doi:10.2298/JSC130718091K .

Krstajić, Mila N., Obradović, Maja, Babić, Biljana M., Radmilović, Velimir R., Lačnjevac, Uroš, Krstajić, Nedeljko V., Gojković, Snežana Lj., "Electrochemical oxidation of methanol on Pt/(RuxSn1-x)O2 nanocatalyst" in Journal of the Serbian Chemical Society, 78, no. 11 (2013):1703-1716,
https://doi.org/10.2298/JSC130718091K . .

TY  - CHAP
AU  - Jović, Vladimir D.
AU  - Nikolić, Nebojša D.
AU  - Lačnjevac, Uroš
AU  - Jović, Borka M.
AU  - Popov, Konstantin I.
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4092
AB  - As mentioned in other chapters, metal powders obtained by electrolytic processes are mainly dendrites which can spontaneously fall off or can be removed from the electrode by tapping or other similar techniques [1]. Also, powder particles can have other morphological forms, such as flakes or needles, fibrous or spongy, and needle or cauliflower-like ones, and the shape of powder particles depends on the electrodeposition conditions and the nature of the metal.
PB  - Springer
T2  - Electrochemical Production of Metal Powders, Series: Modern Aspects of Electrochemistry
T1  - Morphology of Different Electrodeposited Pure Metal Powders
VL  - 54
SP  - 63
EP  - 123
DO  - 10.1007/978-1-4614-2380-5_2
ER  - 

@inbook{
author = "Jović, Vladimir D. and Nikolić, Nebojša D. and Lačnjevac, Uroš and Jović, Borka M. and Popov, Konstantin I.",
year = "2012",
abstract = "As mentioned in other chapters, metal powders obtained by electrolytic processes are mainly dendrites which can spontaneously fall off or can be removed from the electrode by tapping or other similar techniques [1]. Also, powder particles can have other morphological forms, such as flakes or needles, fibrous or spongy, and needle or cauliflower-like ones, and the shape of powder particles depends on the electrodeposition conditions and the nature of the metal.",
publisher = "Springer",
journal = "Electrochemical Production of Metal Powders, Series: Modern Aspects of Electrochemistry",
booktitle = "Morphology of Different Electrodeposited Pure Metal Powders",
volume = "54",
pages = "63-123",
doi = "10.1007/978-1-4614-2380-5_2"
}

Jović, V. D., Nikolić, N. D., Lačnjevac, U., Jović, B. M.,& Popov, K. I.. (2012). Morphology of Different Electrodeposited Pure Metal Powders. in Electrochemical Production of Metal Powders, Series: Modern Aspects of Electrochemistry
Springer., 54, 63-123.
https://doi.org/10.1007/978-1-4614-2380-5_2

Jović VD, Nikolić ND, Lačnjevac U, Jović BM, Popov KI. Morphology of Different Electrodeposited Pure Metal Powders. in Electrochemical Production of Metal Powders, Series: Modern Aspects of Electrochemistry. 2012;54:63-123.
doi:10.1007/978-1-4614-2380-5_2 .

Jović, Vladimir D., Nikolić, Nebojša D., Lačnjevac, Uroš, Jović, Borka M., Popov, Konstantin I., "Morphology of Different Electrodeposited Pure Metal Powders" in Electrochemical Production of Metal Powders, Series: Modern Aspects of Electrochemistry, 54 (2012):63-123,
https://doi.org/10.1007/978-1-4614-2380-5_2 . .

TY  - CHAP
AU  - Jović, Vladimir D.
AU  - Nikolić, Nebojša D.
AU  - Lačnjevac, Uroš
AU  - Jović, Borka M.
AU  - Popov, Konstantin I.
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4093
AB  - As mentioned in other chapters, metal powders obtained by electrolytic processes are mainly dendrites which can spontaneously fall off or can be removed from the electrode by tapping or other similar techniques [1]. Also, powder particles can have other morphological forms, such as flakes or needles, fibrous or spongy, and needle or cauliflower-like ones, and the shape of powder particles depends on the electrodeposition conditions and the nature of the metal.
PB  - Springer
T2  - Electrochemical Production of Metal Powders, Series: Modern Aspects of Electrochemistry
T1  - Morphology of Different Electrodeposited Pure Metal Powders
VL  - 54
SP  - 63
EP  - 123
DO  - 10.1007/978-1-4614-2380-5_2
ER  - 

@inbook{
author = "Jović, Vladimir D. and Nikolić, Nebojša D. and Lačnjevac, Uroš and Jović, Borka M. and Popov, Konstantin I.",
year = "2012",
abstract = "As mentioned in other chapters, metal powders obtained by electrolytic processes are mainly dendrites which can spontaneously fall off or can be removed from the electrode by tapping or other similar techniques [1]. Also, powder particles can have other morphological forms, such as flakes or needles, fibrous or spongy, and needle or cauliflower-like ones, and the shape of powder particles depends on the electrodeposition conditions and the nature of the metal.",
publisher = "Springer",
journal = "Electrochemical Production of Metal Powders, Series: Modern Aspects of Electrochemistry",
booktitle = "Morphology of Different Electrodeposited Pure Metal Powders",
volume = "54",
pages = "63-123",
doi = "10.1007/978-1-4614-2380-5_2"
}

Jović, V. D., Nikolić, N. D., Lačnjevac, U., Jović, B. M.,& Popov, K. I.. (2012). Morphology of Different Electrodeposited Pure Metal Powders. in Electrochemical Production of Metal Powders, Series: Modern Aspects of Electrochemistry
Springer., 54, 63-123.
https://doi.org/10.1007/978-1-4614-2380-5_2

Jović VD, Nikolić ND, Lačnjevac U, Jović BM, Popov KI. Morphology of Different Electrodeposited Pure Metal Powders. in Electrochemical Production of Metal Powders, Series: Modern Aspects of Electrochemistry. 2012;54:63-123.
doi:10.1007/978-1-4614-2380-5_2 .

Jović, Vladimir D., Nikolić, Nebojša D., Lačnjevac, Uroš, Jović, Borka M., Popov, Konstantin I., "Morphology of Different Electrodeposited Pure Metal Powders" in Electrochemical Production of Metal Powders, Series: Modern Aspects of Electrochemistry, 54 (2012):63-123,
https://doi.org/10.1007/978-1-4614-2380-5_2 . .

TY  - JOUR
AU  - Nikolić, Nebojša D.
AU  - Branković, Goran
AU  - Lačnjevac, Uroš
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/986
AB  - Electrodeposition of lead from nitrate electrolyte in constant regimes of electrolysis was analyzed and the obtained powder lead deposits were examined by scanning electron microscopy. Polarization curve for lead electrodeposition consisted of two parts separated by an inflection point. The first part of the polarization curve was characterized by a linear dependence of the current density on overpotential. The linear part of the polarization curve corresponded to ohmic-controlled electrodeposition and single lead crystals were formed in this range of overpotentials. A rapid increase in the current density with increasing overpotential was observed after the inflection point (the second part of the polarization curve). Two-dimensional dendrites were the dominant morphological forms obtained at overpotentials and current densities belonging to the second part of the polarization curve, indicating that the rapid increase of the current density with increasing overpotential corresponded to activation controlled electrodeposition at the tips of the formed dendrites. Comparing the morphologies of the obtained lead deposits with those belonging to the same group of metals (metals characterized by a high exchange current density), such as silver, cadmium, and tin, a strong dependence between the nucleation type and the shape of dendrites for the metals belonging to the same group was established.
PB  - Springer, New York
T2  - Journal of Solid State Electrochemistry
T1  - Formation of two-dimensional (2D) lead dendrites by application of different regimes of electrolysis
VL  - 16
IS  - 6
SP  - 2121
EP  - 2126
DO  - 10.1007/s10008-011-1626-y
ER  - 

@article{
author = "Nikolić, Nebojša D. and Branković, Goran and Lačnjevac, Uroš",
year = "2012",
abstract = "Electrodeposition of lead from nitrate electrolyte in constant regimes of electrolysis was analyzed and the obtained powder lead deposits were examined by scanning electron microscopy. Polarization curve for lead electrodeposition consisted of two parts separated by an inflection point. The first part of the polarization curve was characterized by a linear dependence of the current density on overpotential. The linear part of the polarization curve corresponded to ohmic-controlled electrodeposition and single lead crystals were formed in this range of overpotentials. A rapid increase in the current density with increasing overpotential was observed after the inflection point (the second part of the polarization curve). Two-dimensional dendrites were the dominant morphological forms obtained at overpotentials and current densities belonging to the second part of the polarization curve, indicating that the rapid increase of the current density with increasing overpotential corresponded to activation controlled electrodeposition at the tips of the formed dendrites. Comparing the morphologies of the obtained lead deposits with those belonging to the same group of metals (metals characterized by a high exchange current density), such as silver, cadmium, and tin, a strong dependence between the nucleation type and the shape of dendrites for the metals belonging to the same group was established.",
publisher = "Springer, New York",
journal = "Journal of Solid State Electrochemistry",
title = "Formation of two-dimensional (2D) lead dendrites by application of different regimes of electrolysis",
volume = "16",
number = "6",
pages = "2121-2126",
doi = "10.1007/s10008-011-1626-y"
}

Nikolić, N. D., Branković, G.,& Lačnjevac, U.. (2012). Formation of two-dimensional (2D) lead dendrites by application of different regimes of electrolysis. in Journal of Solid State Electrochemistry
Springer, New York., 16(6), 2121-2126.
https://doi.org/10.1007/s10008-011-1626-y

Nikolić ND, Branković G, Lačnjevac U. Formation of two-dimensional (2D) lead dendrites by application of different regimes of electrolysis. in Journal of Solid State Electrochemistry. 2012;16(6):2121-2126.
doi:10.1007/s10008-011-1626-y .

Nikolić, Nebojša D., Branković, Goran, Lačnjevac, Uroš, "Formation of two-dimensional (2D) lead dendrites by application of different regimes of electrolysis" in Journal of Solid State Electrochemistry, 16, no. 6 (2012):2121-2126,
https://doi.org/10.1007/s10008-011-1626-y . .

TY  - JOUR
AU  - Stoiljković, Zora
AU  - Avramov Ivić, Milka
AU  - Petrović, Slobodan D.
AU  - Mijin, Dušan
AU  - Stevanović, Sanja
AU  - Lačnjevac, Uroš
AU  - Marinković, Aleksandar D.
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1019
AB  - The oxidative behaviour of amlodipine besylate was studied. The gold electrode and Au/o-MWCNT (oxidized multi-wall carbon nanotubes) were used for determination of amlodipine besylate standard and as a content of Alopres tablet, in 0.05 M NaHCO3 and in phosphate buffer (pH=11) by cyclic voltammetry and square-wave anodic stripping voltammetry. Electrode surfaces were characterized by AFM in the presence of amlodipine and the concentrations of drugs in electrolytes were simultaneously followed by HPLC. The linear dependency of the anodic currents of amlodipine besylate as standard and in Alopres tablet vs. concentration was observed in both electrolytes, but in phosphate buffer for the higher concentrations. The peak currents obtained in all experiments are more than fifty-fold higher comparing to all previously published results concerning the glassy carbon electrode and the carbon paste electrode. The gold electrode is better catalyst for anodic oxidation of amlodipine besylate than glassy carbone. The results obtained with Au/o-MWCNT show lower anodic activity comparing to previously published GC/o-MWCNT. GC/o-MWCNT is better catalyst than Au/o-MWCNT under similar experimental conditions.
PB  - Esg, Belgrade
T2  - International Journal of Electrochemical Science
T1  - Voltammetric and Square-Wave Anodic Stripping Determination of Amlodipine Besylate on Gold Electrode
VL  - 7
IS  - 3
SP  - 2288
EP  - 2303
UR  - https://hdl.handle.net/21.15107/rcub_cer_1019
ER  - 

@article{
author = "Stoiljković, Zora and Avramov Ivić, Milka and Petrović, Slobodan D. and Mijin, Dušan and Stevanović, Sanja and Lačnjevac, Uroš and Marinković, Aleksandar D.",
year = "2012",
abstract = "The oxidative behaviour of amlodipine besylate was studied. The gold electrode and Au/o-MWCNT (oxidized multi-wall carbon nanotubes) were used for determination of amlodipine besylate standard and as a content of Alopres tablet, in 0.05 M NaHCO3 and in phosphate buffer (pH=11) by cyclic voltammetry and square-wave anodic stripping voltammetry. Electrode surfaces were characterized by AFM in the presence of amlodipine and the concentrations of drugs in electrolytes were simultaneously followed by HPLC. The linear dependency of the anodic currents of amlodipine besylate as standard and in Alopres tablet vs. concentration was observed in both electrolytes, but in phosphate buffer for the higher concentrations. The peak currents obtained in all experiments are more than fifty-fold higher comparing to all previously published results concerning the glassy carbon electrode and the carbon paste electrode. The gold electrode is better catalyst for anodic oxidation of amlodipine besylate than glassy carbone. The results obtained with Au/o-MWCNT show lower anodic activity comparing to previously published GC/o-MWCNT. GC/o-MWCNT is better catalyst than Au/o-MWCNT under similar experimental conditions.",
publisher = "Esg, Belgrade",
journal = "International Journal of Electrochemical Science",
title = "Voltammetric and Square-Wave Anodic Stripping Determination of Amlodipine Besylate on Gold Electrode",
volume = "7",
number = "3",
pages = "2288-2303",
url = "https://hdl.handle.net/21.15107/rcub_cer_1019"
}

Stoiljković, Z., Avramov Ivić, M., Petrović, S. D., Mijin, D., Stevanović, S., Lačnjevac, U.,& Marinković, A. D.. (2012). Voltammetric and Square-Wave Anodic Stripping Determination of Amlodipine Besylate on Gold Electrode. in International Journal of Electrochemical Science
Esg, Belgrade., 7(3), 2288-2303.
https://hdl.handle.net/21.15107/rcub_cer_1019

Stoiljković Z, Avramov Ivić M, Petrović SD, Mijin D, Stevanović S, Lačnjevac U, Marinković AD. Voltammetric and Square-Wave Anodic Stripping Determination of Amlodipine Besylate on Gold Electrode. in International Journal of Electrochemical Science. 2012;7(3):2288-2303.
https://hdl.handle.net/21.15107/rcub_cer_1019 .

Stoiljković, Zora, Avramov Ivić, Milka, Petrović, Slobodan D., Mijin, Dušan, Stevanović, Sanja, Lačnjevac, Uroš, Marinković, Aleksandar D., "Voltammetric and Square-Wave Anodic Stripping Determination of Amlodipine Besylate on Gold Electrode" in International Journal of Electrochemical Science, 7, no. 3 (2012):2288-2303,
https://hdl.handle.net/21.15107/rcub_cer_1019 .

TY  - JOUR
AU  - Maksimović, Vesna M.
AU  - Lačnjevac, Uroš
AU  - Stoiljković, Milovan
AU  - Pavlović, Miomir
AU  - Jović, Vladimir D.
PY  - 2011
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/836
AB  - The morphology, phase and chemical composition of Ni-Co alloy powders electrodeposited from an ammonium sulfate-boric acid containing electrolyte with different ratio of Ni/Co ions were investigated. The ratios of NVCo ions were 1/1, 1/2 and 1/3. The morphology, chemical composition and phase composition of the electrodeposited alloy powders were investigated using AES, SEM, EDS and XRD analysis. Composition of the electrolyte, i.e. the ratio of Ni/Co concentrations was found to influence both, the alloy phase composition and the morphology of Ni-Co alloy powders. At the highest ratio of Ni/Co = 1/1 concentrations typical 2D fern-like dendritic particles were obtained. With a decrease of NVCo ions ratio among 2D fern-like dendrites, 3D dendrites and different agglomerates were obtained. X-ray diffraction studies showed that the alloy powders mainly consisted of the face-centered cubic alpha-nickel phase and hexagonal close-packed alpha-cobalt phase and minor proportions of face-centered cubic alpha-cobalt phase. The occurrence of the latter phase was observed only in the alloy powder with the higher cobalt concentration in electrolyte. The electrodeposition of Ni-Co powders occurred in an anomalous manner.
PB  - Elsevier Science Inc, New York
T2  - Materials Characterization
T1  - Morphology and composition of Ni-Co electrodeposited powders
VL  - 62
IS  - 12
SP  - 1173
EP  - 1179
DO  - 10.1016/j.matchar.2011.09.001
ER  - 

@article{
author = "Maksimović, Vesna M. and Lačnjevac, Uroš and Stoiljković, Milovan and Pavlović, Miomir and Jović, Vladimir D.",
year = "2011",
abstract = "The morphology, phase and chemical composition of Ni-Co alloy powders electrodeposited from an ammonium sulfate-boric acid containing electrolyte with different ratio of Ni/Co ions were investigated. The ratios of NVCo ions were 1/1, 1/2 and 1/3. The morphology, chemical composition and phase composition of the electrodeposited alloy powders were investigated using AES, SEM, EDS and XRD analysis. Composition of the electrolyte, i.e. the ratio of Ni/Co concentrations was found to influence both, the alloy phase composition and the morphology of Ni-Co alloy powders. At the highest ratio of Ni/Co = 1/1 concentrations typical 2D fern-like dendritic particles were obtained. With a decrease of NVCo ions ratio among 2D fern-like dendrites, 3D dendrites and different agglomerates were obtained. X-ray diffraction studies showed that the alloy powders mainly consisted of the face-centered cubic alpha-nickel phase and hexagonal close-packed alpha-cobalt phase and minor proportions of face-centered cubic alpha-cobalt phase. The occurrence of the latter phase was observed only in the alloy powder with the higher cobalt concentration in electrolyte. The electrodeposition of Ni-Co powders occurred in an anomalous manner.",
publisher = "Elsevier Science Inc, New York",
journal = "Materials Characterization",
title = "Morphology and composition of Ni-Co electrodeposited powders",
volume = "62",
number = "12",
pages = "1173-1179",
doi = "10.1016/j.matchar.2011.09.001"
}

Maksimović, V. M., Lačnjevac, U., Stoiljković, M., Pavlović, M.,& Jović, V. D.. (2011). Morphology and composition of Ni-Co electrodeposited powders. in Materials Characterization
Elsevier Science Inc, New York., 62(12), 1173-1179.
https://doi.org/10.1016/j.matchar.2011.09.001

Maksimović VM, Lačnjevac U, Stoiljković M, Pavlović M, Jović VD. Morphology and composition of Ni-Co electrodeposited powders. in Materials Characterization. 2011;62(12):1173-1179.
doi:10.1016/j.matchar.2011.09.001 .

Maksimović, Vesna M., Lačnjevac, Uroš, Stoiljković, Milovan, Pavlović, Miomir, Jović, Vladimir D., "Morphology and composition of Ni-Co electrodeposited powders" in Materials Characterization, 62, no. 12 (2011):1173-1179,
https://doi.org/10.1016/j.matchar.2011.09.001 . .

TY  - JOUR
AU  - Maksimović, Vesna M.
AU  - Lačnjevac, Uroš
AU  - Jović, Vladimir D.
AU  - Jović, Borka
AU  - Pavlović, Miomir
PY  - 2011
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/872
AB  - Novel three-dimensional cobalt powder structures were successfully prepared by electrodeposition. Electrodeposited cobalt powder was characterized by scanning electron microscopy (SEM) and light microscopy. It was possible to control the morphology and structure of cobalt particles by adjusting process parameters of electrodeposition such as current density and type of working electrode. The morphology and structure of cobalt powders were investigated and the formation mechanism of agglomerate was also discussed.
T2  - Metalurgija
T1  - Electrodeposition of cobalt powders with novel three-dimensional structure
VL  - 17
IS  - 2
SP  - 103
EP  - 110
UR  - https://hdl.handle.net/21.15107/rcub_cer_872
ER  - 

@article{
author = "Maksimović, Vesna M. and Lačnjevac, Uroš and Jović, Vladimir D. and Jović, Borka and Pavlović, Miomir",
year = "2011",
abstract = "Novel three-dimensional cobalt powder structures were successfully prepared by electrodeposition. Electrodeposited cobalt powder was characterized by scanning electron microscopy (SEM) and light microscopy. It was possible to control the morphology and structure of cobalt particles by adjusting process parameters of electrodeposition such as current density and type of working electrode. The morphology and structure of cobalt powders were investigated and the formation mechanism of agglomerate was also discussed.",
journal = "Metalurgija",
title = "Electrodeposition of cobalt powders with novel three-dimensional structure",
volume = "17",
number = "2",
pages = "103-110",
url = "https://hdl.handle.net/21.15107/rcub_cer_872"
}

Maksimović, V. M., Lačnjevac, U., Jović, V. D., Jović, B.,& Pavlović, M.. (2011). Electrodeposition of cobalt powders with novel three-dimensional structure. in Metalurgija, 17(2), 103-110.
https://hdl.handle.net/21.15107/rcub_cer_872

Maksimović VM, Lačnjevac U, Jović VD, Jović B, Pavlović M. Electrodeposition of cobalt powders with novel three-dimensional structure. in Metalurgija. 2011;17(2):103-110.
https://hdl.handle.net/21.15107/rcub_cer_872 .

Maksimović, Vesna M., Lačnjevac, Uroš, Jović, Vladimir D., Jović, Borka, Pavlović, Miomir, "Electrodeposition of cobalt powders with novel three-dimensional structure" in Metalurgija, 17, no. 2 (2011):103-110,
https://hdl.handle.net/21.15107/rcub_cer_872 .