TY  - CONF
AU  - Georgijević, Jelena P.
AU  - Srejić, Irena
AU  - Novaković, Mirjana
AU  - Rakočević, Lazar
AU  - Potočnik, Jelena
AU  - Maksić, Aleksandar
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12315
AB  - To enhance the utilization efficiency of platinum (Pt) in electrochemical energy conversion, the precise selection of support materials presents a highly promising strategy. We have developed an efficient and stable bifunctional catalyst for methanol oxidation (MOR) and hydrogen evolution (HER) reaction in an alkaline medium. The Pt-based electrocatalyst, denoted as Pt/e-rGO with low Pt loading was successfully synthesized using graphene sheets as the support via chemical reduction using formic acid as the reducing agent. Graphene sheets are obtained by anodic electrochemical exfoliation of graphite tape. Significant enhancement of intrinsic activity toward MOR and HER was achieved for Pt/e-rGO compared to the commercial Pt/C catalyst. Structural characterization was performed by TEM, SEM and XPS. XPS analysis shows that the graphene is highly reduced. TEM analysis unveiled that the majority of the Pt nanoparticles (NPs) exhibit a diameter in the range of 4-5 nanometers, which is significant because the efficiency of electrooxidation of methanol on supported Pt NPs shows a strong dependence on particle size distribution. Catalyst activity was studied by cyclic voltammetry and linear sweep voltammetry in 0.1M KOH. Electrochemical active surface area (ECSA) was measured by CO-stripping voltammetry and estimated to be 67.93 m2 /g. Current density of 11.28 mA/cm2 ECSA at 0.82 V vs. RHE for MOR is achieved. Onset potential for MOR is 0.55 V vs. RHE. Meanwhile, for HER overporential at the current density -10 mA/cm2 ECSA was 119 mV.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
T1  - Electrochemically exfoliated graphene as support of platinum nanoparticles for methanol oxidation reaction and hydrogen evolution reaction
SP  - 41
EP  - 41
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12315
ER  - 

@conference{
author = "Georgijević, Jelena P. and Srejić, Irena and Novaković, Mirjana and Rakočević, Lazar and Potočnik, Jelena and Maksić, Aleksandar",
year = "2023",
abstract = "To enhance the utilization efficiency of platinum (Pt) in electrochemical energy conversion, the precise selection of support materials presents a highly promising strategy. We have developed an efficient and stable bifunctional catalyst for methanol oxidation (MOR) and hydrogen evolution (HER) reaction in an alkaline medium. The Pt-based electrocatalyst, denoted as Pt/e-rGO with low Pt loading was successfully synthesized using graphene sheets as the support via chemical reduction using formic acid as the reducing agent. Graphene sheets are obtained by anodic electrochemical exfoliation of graphite tape. Significant enhancement of intrinsic activity toward MOR and HER was achieved for Pt/e-rGO compared to the commercial Pt/C catalyst. Structural characterization was performed by TEM, SEM and XPS. XPS analysis shows that the graphene is highly reduced. TEM analysis unveiled that the majority of the Pt nanoparticles (NPs) exhibit a diameter in the range of 4-5 nanometers, which is significant because the efficiency of electrooxidation of methanol on supported Pt NPs shows a strong dependence on particle size distribution. Catalyst activity was studied by cyclic voltammetry and linear sweep voltammetry in 0.1M KOH. Electrochemical active surface area (ECSA) was measured by CO-stripping voltammetry and estimated to be 67.93 m2 /g. Current density of 11.28 mA/cm2 ECSA at 0.82 V vs. RHE for MOR is achieved. Onset potential for MOR is 0.55 V vs. RHE. Meanwhile, for HER overporential at the current density -10 mA/cm2 ECSA was 119 mV.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts",
title = "Electrochemically exfoliated graphene as support of platinum nanoparticles for methanol oxidation reaction and hydrogen evolution reaction",
pages = "41-41",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12315"
}

Georgijević, J. P., Srejić, I., Novaković, M., Rakočević, L., Potočnik, J.,& Maksić, A.. (2023). Electrochemically exfoliated graphene as support of platinum nanoparticles for methanol oxidation reaction and hydrogen evolution reaction. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 41-41.
https://hdl.handle.net/21.15107/rcub_vinar_12315

Georgijević JP, Srejić I, Novaković M, Rakočević L, Potočnik J, Maksić A. Electrochemically exfoliated graphene as support of platinum nanoparticles for methanol oxidation reaction and hydrogen evolution reaction. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts. 2023;:41-41.
https://hdl.handle.net/21.15107/rcub_vinar_12315 .

Georgijević, Jelena P., Srejić, Irena, Novaković, Mirjana, Rakočević, Lazar, Potočnik, Jelena, Maksić, Aleksandar, "Electrochemically exfoliated graphene as support of platinum nanoparticles for methanol oxidation reaction and hydrogen evolution reaction" in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts (2023):41-41,
https://hdl.handle.net/21.15107/rcub_vinar_12315 .

TY  - JOUR
AU  - Smiljanić, M.
AU  - Srejić, Irina
AU  - Georgijević, Jelena M.
AU  - Maksić, Aleksandar
AU  - Bele, M.
AU  - Hodnik, N.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12168
AB  - Electrocatalytic materials are pivotal for clean chemical production and energy conversion in devices like electrolyzers and fuel cells. These materials usually consist of metallic nanoparticles which serve as active reaction sites, and support materials which provide high surface area, conductivity and stability. When designing novel electrocatalytic composites, the focus is often on the metallic sites, however, the significance of the support should not be overlooked. Carbon materials, valued for their conductivity and large surface area, are commonly used as support in benchmark electrocatalysts. However, using alternative support materials instead of carbon can be beneficial in certain cases. In this minireview, we summarize recent advancements and key directions in developing novel supports for electrocatalysis, encompassing both carbon and non-carbon materials.
T2  - Frontiers in Chemistry
T1  - Recent progress in the development of advanced support materials for electrocatalysis
VL  - 11
DO  - 10.3389/fchem.2023.1304063
ER  - 

@article{
author = "Smiljanić, M. and Srejić, Irina and Georgijević, Jelena M. and Maksić, Aleksandar and Bele, M. and Hodnik, N.",
year = "2023",
abstract = "Electrocatalytic materials are pivotal for clean chemical production and energy conversion in devices like electrolyzers and fuel cells. These materials usually consist of metallic nanoparticles which serve as active reaction sites, and support materials which provide high surface area, conductivity and stability. When designing novel electrocatalytic composites, the focus is often on the metallic sites, however, the significance of the support should not be overlooked. Carbon materials, valued for their conductivity and large surface area, are commonly used as support in benchmark electrocatalysts. However, using alternative support materials instead of carbon can be beneficial in certain cases. In this minireview, we summarize recent advancements and key directions in developing novel supports for electrocatalysis, encompassing both carbon and non-carbon materials.",
journal = "Frontiers in Chemistry",
title = "Recent progress in the development of advanced support materials for electrocatalysis",
volume = "11",
doi = "10.3389/fchem.2023.1304063"
}

Smiljanić, M., Srejić, I., Georgijević, J. M., Maksić, A., Bele, M.,& Hodnik, N.. (2023). Recent progress in the development of advanced support materials for electrocatalysis. in Frontiers in Chemistry, 11.
https://doi.org/10.3389/fchem.2023.1304063

Smiljanić M, Srejić I, Georgijević JM, Maksić A, Bele M, Hodnik N. Recent progress in the development of advanced support materials for electrocatalysis. in Frontiers in Chemistry. 2023;11.
doi:10.3389/fchem.2023.1304063 .

Smiljanić, M., Srejić, Irina, Georgijević, Jelena M., Maksić, Aleksandar, Bele, M., Hodnik, N., "Recent progress in the development of advanced support materials for electrocatalysis" in Frontiers in Chemistry, 11 (2023),
https://doi.org/10.3389/fchem.2023.1304063 . .

TY  - JOUR
AU  - Rakočević, Lazar
AU  - Srejić, Irina
AU  - Maksić, Aleksandar
AU  - Golubović, Jelena
AU  - Štrbac, Svetlana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9626
AB  - Hydrogen evolution reaction (HER) was investigated on reduced graphene oxide (rGO)-supported Au and PdAu nanoparticles in acid solution. The graphene spread over glassy carbon (rGO/GC) was used as a support for the spontaneous deposition of Au and Pd. The resulting Au/rGO and PdAu/rGO electrodes were characterized using atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS) techniques. Phase AFM images have shown that the edges of the rGO sheets were active sites for the deposition of both Au and Pd. XPS analysis revealed that the atomic percentages of both Au and PdAu nanoparticles were slightly higher than 1%. The activity of the PdAu/rGO electrode for the HER was remarkably high, with the overpotential close to zero. HER activity was stable over a 3 h testing time, with a low Tafel slope of approx. −46 mV/dec achieved after prolonged hydrogen evolution at a constant potential.
T2  - Catalysts
T1  - Hydrogen Evolution on Reduced Graphene Oxide-Supported PdAu Nanoparticles
VL  - 11
IS  - 4
SP  - 481
DO  - 10.3390/catal11040481
ER  - 

@article{
author = "Rakočević, Lazar and Srejić, Irina and Maksić, Aleksandar and Golubović, Jelena and Štrbac, Svetlana",
year = "2021",
abstract = "Hydrogen evolution reaction (HER) was investigated on reduced graphene oxide (rGO)-supported Au and PdAu nanoparticles in acid solution. The graphene spread over glassy carbon (rGO/GC) was used as a support for the spontaneous deposition of Au and Pd. The resulting Au/rGO and PdAu/rGO electrodes were characterized using atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS) techniques. Phase AFM images have shown that the edges of the rGO sheets were active sites for the deposition of both Au and Pd. XPS analysis revealed that the atomic percentages of both Au and PdAu nanoparticles were slightly higher than 1%. The activity of the PdAu/rGO electrode for the HER was remarkably high, with the overpotential close to zero. HER activity was stable over a 3 h testing time, with a low Tafel slope of approx. −46 mV/dec achieved after prolonged hydrogen evolution at a constant potential.",
journal = "Catalysts",
title = "Hydrogen Evolution on Reduced Graphene Oxide-Supported PdAu Nanoparticles",
volume = "11",
number = "4",
pages = "481",
doi = "10.3390/catal11040481"
}

Rakočević, L., Srejić, I., Maksić, A., Golubović, J.,& Štrbac, S.. (2021). Hydrogen Evolution on Reduced Graphene Oxide-Supported PdAu Nanoparticles. in Catalysts, 11(4), 481.
https://doi.org/10.3390/catal11040481

Rakočević L, Srejić I, Maksić A, Golubović J, Štrbac S. Hydrogen Evolution on Reduced Graphene Oxide-Supported PdAu Nanoparticles. in Catalysts. 2021;11(4):481.
doi:10.3390/catal11040481 .

Rakočević, Lazar, Srejić, Irina, Maksić, Aleksandar, Golubović, Jelena, Štrbac, Svetlana, "Hydrogen Evolution on Reduced Graphene Oxide-Supported PdAu Nanoparticles" in Catalysts, 11, no. 4 (2021):481,
https://doi.org/10.3390/catal11040481 . .

TY  - JOUR
AU  - Golubović, Jelena
AU  - Srejić, Irina
AU  - Štrbac, Svetlana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11163
AB  - PdAu/GC nanoparticles obtained by the electrochemical deposition of gold followed by the spontaneous palladium deposition show a remarkable catalytic activity for the oxygen reduction reaction (ORR) in perchloric acid solution. AFM images reveal the size, shape, and coverage of the GC electrode with Au and PdAu nanoislands. Au/GC electrode with the full GC coverage by the deposited gold islands and activated by potential cycling shows the highest ORR activity. The initial potential for ORR shifts positively for 200 mV compared to polycrystalline gold. With the addition of palladium, the activity for ORR enhances significantly. For the most active PdAu/GC electrode, the initial potential shifts positively for another 250 mV, which coincides with polycrystalline palladium. © 2021 The Authors. All Rights Reserved.
T2  - International Journal of Electrochemical Science
T1  - Oxygen Reduction on Glassy Carbon-Supported PdAu Nanoparticles in Perchloric Acid Solution
VL  - 16
IS  - 8
SP  - 210818
DO  - 10.20964/2021.08.01
ER  - 

@article{
author = "Golubović, Jelena and Srejić, Irina and Štrbac, Svetlana",
year = "2021",
abstract = "PdAu/GC nanoparticles obtained by the electrochemical deposition of gold followed by the spontaneous palladium deposition show a remarkable catalytic activity for the oxygen reduction reaction (ORR) in perchloric acid solution. AFM images reveal the size, shape, and coverage of the GC electrode with Au and PdAu nanoislands. Au/GC electrode with the full GC coverage by the deposited gold islands and activated by potential cycling shows the highest ORR activity. The initial potential for ORR shifts positively for 200 mV compared to polycrystalline gold. With the addition of palladium, the activity for ORR enhances significantly. For the most active PdAu/GC electrode, the initial potential shifts positively for another 250 mV, which coincides with polycrystalline palladium. © 2021 The Authors. All Rights Reserved.",
journal = "International Journal of Electrochemical Science",
title = "Oxygen Reduction on Glassy Carbon-Supported PdAu Nanoparticles in Perchloric Acid Solution",
volume = "16",
number = "8",
pages = "210818",
doi = "10.20964/2021.08.01"
}

Golubović, J., Srejić, I.,& Štrbac, S.. (2021). Oxygen Reduction on Glassy Carbon-Supported PdAu Nanoparticles in Perchloric Acid Solution. in International Journal of Electrochemical Science, 16(8), 210818.
https://doi.org/10.20964/2021.08.01

Golubović J, Srejić I, Štrbac S. Oxygen Reduction on Glassy Carbon-Supported PdAu Nanoparticles in Perchloric Acid Solution. in International Journal of Electrochemical Science. 2021;16(8):210818.
doi:10.20964/2021.08.01 .

Golubović, Jelena, Srejić, Irina, Štrbac, Svetlana, "Oxygen Reduction on Glassy Carbon-Supported PdAu Nanoparticles in Perchloric Acid Solution" in International Journal of Electrochemical Science, 16, no. 8 (2021):210818,
https://doi.org/10.20964/2021.08.01 . .

TY  - JOUR
AU  - Rakočević, Lazar
AU  - Štrbac, Svetlana
AU  - Srejić, Irina
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9544
AB  - HER was examined on various glassy carbon-supported Au and PdAu electrodes in acid solution. The Au/GC electrodes were obtained after Au was electrodeposited on a GC substrate by holding the potential for various times in 0.5 M H2SO4 solution containing AuCl4− ions. PdAu/GC electrodes were obtained after Pd has been added by a spontaneous deposition on previously prepared Au/GC electrodes. Surface morphology and chemical analysis of Au/GC and PdAu/GC electrodes were performed by atomic force microscopy and X-ray photoemission spectroscopy. Electrochemical characterization was performed by cyclic voltammetry in 0.5 M H2SO4 solution, while the linear sweep voltammetry was used to gain insight into the electrocatalytic activity of these electrodes for HER. 30minPd/10minAu/GC electrode consisting of 48% Pd and 65% Au, with the total coverage of the GC substrate with PdAu islands of 70%, showed the best catalytic activity for HER. A remarkable high activity and stability of this electrode makes it a promising catalyst for HER in acid solution. © 2021 Hydrogen Energy Publications LLC
T2  - International Journal of Hydrogen Energy
T1  - Hydrogen evolution on Au/GC and PdAu/GC nanostructures in acid solution: AFM, XPS, and electrochemical study
VL  - 46
IS  - 13
SP  - 9052
EP  - 9063
DO  - 10.1016/j.ijhydene.2021.01.001
ER  - 

@article{
author = "Rakočević, Lazar and Štrbac, Svetlana and Srejić, Irina",
year = "2021",
abstract = "HER was examined on various glassy carbon-supported Au and PdAu electrodes in acid solution. The Au/GC electrodes were obtained after Au was electrodeposited on a GC substrate by holding the potential for various times in 0.5 M H2SO4 solution containing AuCl4− ions. PdAu/GC electrodes were obtained after Pd has been added by a spontaneous deposition on previously prepared Au/GC electrodes. Surface morphology and chemical analysis of Au/GC and PdAu/GC electrodes were performed by atomic force microscopy and X-ray photoemission spectroscopy. Electrochemical characterization was performed by cyclic voltammetry in 0.5 M H2SO4 solution, while the linear sweep voltammetry was used to gain insight into the electrocatalytic activity of these electrodes for HER. 30minPd/10minAu/GC electrode consisting of 48% Pd and 65% Au, with the total coverage of the GC substrate with PdAu islands of 70%, showed the best catalytic activity for HER. A remarkable high activity and stability of this electrode makes it a promising catalyst for HER in acid solution. © 2021 Hydrogen Energy Publications LLC",
journal = "International Journal of Hydrogen Energy",
title = "Hydrogen evolution on Au/GC and PdAu/GC nanostructures in acid solution: AFM, XPS, and electrochemical study",
volume = "46",
number = "13",
pages = "9052-9063",
doi = "10.1016/j.ijhydene.2021.01.001"
}

Rakočević, L., Štrbac, S.,& Srejić, I.. (2021). Hydrogen evolution on Au/GC and PdAu/GC nanostructures in acid solution: AFM, XPS, and electrochemical study. in International Journal of Hydrogen Energy, 46(13), 9052-9063.
https://doi.org/10.1016/j.ijhydene.2021.01.001

Rakočević L, Štrbac S, Srejić I. Hydrogen evolution on Au/GC and PdAu/GC nanostructures in acid solution: AFM, XPS, and electrochemical study. in International Journal of Hydrogen Energy. 2021;46(13):9052-9063.
doi:10.1016/j.ijhydene.2021.01.001 .

Rakočević, Lazar, Štrbac, Svetlana, Srejić, Irina, "Hydrogen evolution on Au/GC and PdAu/GC nanostructures in acid solution: AFM, XPS, and electrochemical study" in International Journal of Hydrogen Energy, 46, no. 13 (2021):9052-9063,
https://doi.org/10.1016/j.ijhydene.2021.01.001 . .

TY  - JOUR
AU  - Štrbac, Svetlana
AU  - Srejić, Irina
AU  - Rakočević, Zlatko Lj.
PY  - 2018
UR  - http://jes.ecsdl.org/lookup/doi/10.1149/2.0441815jes
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8065
AB  - Iridium nanoislands are spontaneously deposited on Au(111) from (1 mMIrCl(3) center dot xH(2)O + 0.5 MH2SO4) depositing solution. Atomic Force Microscopy images of the obtained Ir/Au(111) bimetallic surfaces show that gold surface is fully covered with nanosized Ir islands after only 3 min of deposition. X-Ray Photoelectron Spectroscopy analysis shows that the deposit consists of a mixture of adsorbed hydrated IrCl3 and to a lesser extent of Ir(OH)(3). Cyclic Voltammetry characterization in 0.5 M H2SO4 solution does not show clear Hupd region prior to hydrogen evolution reaction (HER). Linear Sweep Voltammetry measurements show pronounced catalysis of HER on Ir modified Au(111) surface compared to bare Au(111). With prolonged Ir deposition, the observed limited increasing activity for HER of Ir/Au(111) surfaces is in accordance with the limited Ir/Au(111) surface morphology changes. (c) The Author(s) 2018. Published by ECS.
T2  - Journal of The Electrochemical Society
T1  - Electrocatalysis of Hydrogen Evolution Reaction on Au(111) by Spontaneously Deposited Iridium in Acid Solution
VL  - 165
IS  - 15
SP  - J3335
EP  - J3341
DO  - 10.1149/2.0441815jes
ER  - 

@article{
author = "Štrbac, Svetlana and Srejić, Irina and Rakočević, Zlatko Lj.",
year = "2018",
abstract = "Iridium nanoislands are spontaneously deposited on Au(111) from (1 mMIrCl(3) center dot xH(2)O + 0.5 MH2SO4) depositing solution. Atomic Force Microscopy images of the obtained Ir/Au(111) bimetallic surfaces show that gold surface is fully covered with nanosized Ir islands after only 3 min of deposition. X-Ray Photoelectron Spectroscopy analysis shows that the deposit consists of a mixture of adsorbed hydrated IrCl3 and to a lesser extent of Ir(OH)(3). Cyclic Voltammetry characterization in 0.5 M H2SO4 solution does not show clear Hupd region prior to hydrogen evolution reaction (HER). Linear Sweep Voltammetry measurements show pronounced catalysis of HER on Ir modified Au(111) surface compared to bare Au(111). With prolonged Ir deposition, the observed limited increasing activity for HER of Ir/Au(111) surfaces is in accordance with the limited Ir/Au(111) surface morphology changes. (c) The Author(s) 2018. Published by ECS.",
journal = "Journal of The Electrochemical Society",
title = "Electrocatalysis of Hydrogen Evolution Reaction on Au(111) by Spontaneously Deposited Iridium in Acid Solution",
volume = "165",
number = "15",
pages = "J3335-J3341",
doi = "10.1149/2.0441815jes"
}

Štrbac, S., Srejić, I.,& Rakočević, Z. Lj.. (2018). Electrocatalysis of Hydrogen Evolution Reaction on Au(111) by Spontaneously Deposited Iridium in Acid Solution. in Journal of The Electrochemical Society, 165(15), J3335-J3341.
https://doi.org/10.1149/2.0441815jes

Štrbac S, Srejić I, Rakočević ZL. Electrocatalysis of Hydrogen Evolution Reaction on Au(111) by Spontaneously Deposited Iridium in Acid Solution. in Journal of The Electrochemical Society. 2018;165(15):J3335-J3341.
doi:10.1149/2.0441815jes .

Štrbac, Svetlana, Srejić, Irina, Rakočević, Zlatko Lj., "Electrocatalysis of Hydrogen Evolution Reaction on Au(111) by Spontaneously Deposited Iridium in Acid Solution" in Journal of The Electrochemical Society, 165, no. 15 (2018):J3335-J3341,
https://doi.org/10.1149/2.0441815jes . .

TY  - JOUR
AU  - Smiljanić, Milutin Lj.
AU  - Srejić, Irina
AU  - Potočnik, Jelena
AU  - Mitrić, Miodrag
AU  - Rakočević, Zlatko Lj.
AU  - Štrbac, Svetlana
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0360319918326909
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7893
AB  - Hydrogen evolution reaction (HER) was explored on tri-metallic Rh@Pd/Au(poly) and bimetallic Pd/Au(poly) and Rh/Au(poly) electrodes in alkaline solution. Electrodes were prepared by the spontaneous deposition of either Pd or Rh and by co-deposition of both Rh and Pd on polycrystalline gold electrode. Characterization of modified electrodes was performed by cyclic voltammetry in alkaline solution, while additional information about phase analysis, chemical composition and surface morphology of tri-metallic Rh@Pd/Au(poly) electrode were acquired using X-ray diffraction, X-ray photoelectron spectroscopy, field emission scanning electron microscopy and atomic force microscopy. Investigations of HER catalysis have shown that the activity of tri-metallic Rh@Pd/Au(poly) electrode exceeds the activities of both Pd/Au(poly) and Rh/Au(poly) electrodes, meaning that the synergism between co-deposited Pd and Rh islands is achieved. Moreover, Rh@Pd/Au(poly) electrode showed significant approach to the activities of bulk Pd and Rh electrodes for HER, especially when taking into account low activity of bare Au substrate. Synergistic effect of co-deposited Pd and Rh islands is a consequence of the strong electronic interaction between three metals in a close contact, which promotes the activity for HER by lowering the adsorption energy of Hads intermediate. © 2018 Hydrogen Energy Publications LLC
T2  - International Journal of Hydrogen Energy
T1  - Synergistic electrocatalytic effect of Pd and Rh nanoislands co-deposited on Au(poly) on HER in alkaline solution
VL  - 43
IS  - 42
SP  - 19420
EP  - 19431
DO  - 10.1016/j.ijhydene.2018.08.117
ER  - 

@article{
author = "Smiljanić, Milutin Lj. and Srejić, Irina and Potočnik, Jelena and Mitrić, Miodrag and Rakočević, Zlatko Lj. and Štrbac, Svetlana",
year = "2018",
abstract = "Hydrogen evolution reaction (HER) was explored on tri-metallic Rh@Pd/Au(poly) and bimetallic Pd/Au(poly) and Rh/Au(poly) electrodes in alkaline solution. Electrodes were prepared by the spontaneous deposition of either Pd or Rh and by co-deposition of both Rh and Pd on polycrystalline gold electrode. Characterization of modified electrodes was performed by cyclic voltammetry in alkaline solution, while additional information about phase analysis, chemical composition and surface morphology of tri-metallic Rh@Pd/Au(poly) electrode were acquired using X-ray diffraction, X-ray photoelectron spectroscopy, field emission scanning electron microscopy and atomic force microscopy. Investigations of HER catalysis have shown that the activity of tri-metallic Rh@Pd/Au(poly) electrode exceeds the activities of both Pd/Au(poly) and Rh/Au(poly) electrodes, meaning that the synergism between co-deposited Pd and Rh islands is achieved. Moreover, Rh@Pd/Au(poly) electrode showed significant approach to the activities of bulk Pd and Rh electrodes for HER, especially when taking into account low activity of bare Au substrate. Synergistic effect of co-deposited Pd and Rh islands is a consequence of the strong electronic interaction between three metals in a close contact, which promotes the activity for HER by lowering the adsorption energy of Hads intermediate. © 2018 Hydrogen Energy Publications LLC",
journal = "International Journal of Hydrogen Energy",
title = "Synergistic electrocatalytic effect of Pd and Rh nanoislands co-deposited on Au(poly) on HER in alkaline solution",
volume = "43",
number = "42",
pages = "19420-19431",
doi = "10.1016/j.ijhydene.2018.08.117"
}

Smiljanić, M. Lj., Srejić, I., Potočnik, J., Mitrić, M., Rakočević, Z. Lj.,& Štrbac, S.. (2018). Synergistic electrocatalytic effect of Pd and Rh nanoislands co-deposited on Au(poly) on HER in alkaline solution. in International Journal of Hydrogen Energy, 43(42), 19420-19431.
https://doi.org/10.1016/j.ijhydene.2018.08.117

Smiljanić ML, Srejić I, Potočnik J, Mitrić M, Rakočević ZL, Štrbac S. Synergistic electrocatalytic effect of Pd and Rh nanoislands co-deposited on Au(poly) on HER in alkaline solution. in International Journal of Hydrogen Energy. 2018;43(42):19420-19431.
doi:10.1016/j.ijhydene.2018.08.117 .

Smiljanić, Milutin Lj., Srejić, Irina, Potočnik, Jelena, Mitrić, Miodrag, Rakočević, Zlatko Lj., Štrbac, Svetlana, "Synergistic electrocatalytic effect of Pd and Rh nanoislands co-deposited on Au(poly) on HER in alkaline solution" in International Journal of Hydrogen Energy, 43, no. 42 (2018):19420-19431,
https://doi.org/10.1016/j.ijhydene.2018.08.117 . .

TY  - JOUR
AU  - Štrbac, Svetlana
AU  - Srejić, Irina
AU  - Rakočević, Zlatko Lj.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1484
AB  - Catalytic properties of electrochemically activated polycrystalline gold, Au(poly), modified by spontaneously deposited palladium nanoislands with the coverage below a monolayer were examined for the oxygen reduction reaction (ORR) in alkaline solution using the rotating disc electrode (RDE) technique. Atomic force microscopy (AFM) images have shown that the coverage of randomly distributed nanosized Pd islands ranged from 18% to 77%. Cyclic voltammetry characterization involved hydrogen adsorption/desorption on the deposited Pd islands, as well as their oxidation/reduction at more positive potentials. RDE measurements have shown that, although ORR on Au(poly) proceeds partly through 4e-reduction pathway, in the presence of Pd islands it turns completely to 4e-pathway, exceeding the activity of bare Pd(poly). Among different Pd/Au(poly) nanostructures, the ones with Pd coverage of 18% and 30% have shown the highest activity for ORR in alkaline solution.
T2  - Journal of Electroanalytical Chemistry
T1  - Catalysis of oxygen reduction on electrochemically activated polycrystalline gold by Pd nanoislands in alkaline solution
VL  - 789
SP  - 76
EP  - 84
DO  - 10.1016/j.jelechem.2017.02.034
ER  - 

@article{
author = "Štrbac, Svetlana and Srejić, Irina and Rakočević, Zlatko Lj.",
year = "2017",
abstract = "Catalytic properties of electrochemically activated polycrystalline gold, Au(poly), modified by spontaneously deposited palladium nanoislands with the coverage below a monolayer were examined for the oxygen reduction reaction (ORR) in alkaline solution using the rotating disc electrode (RDE) technique. Atomic force microscopy (AFM) images have shown that the coverage of randomly distributed nanosized Pd islands ranged from 18% to 77%. Cyclic voltammetry characterization involved hydrogen adsorption/desorption on the deposited Pd islands, as well as their oxidation/reduction at more positive potentials. RDE measurements have shown that, although ORR on Au(poly) proceeds partly through 4e-reduction pathway, in the presence of Pd islands it turns completely to 4e-pathway, exceeding the activity of bare Pd(poly). Among different Pd/Au(poly) nanostructures, the ones with Pd coverage of 18% and 30% have shown the highest activity for ORR in alkaline solution.",
journal = "Journal of Electroanalytical Chemistry",
title = "Catalysis of oxygen reduction on electrochemically activated polycrystalline gold by Pd nanoislands in alkaline solution",
volume = "789",
pages = "76-84",
doi = "10.1016/j.jelechem.2017.02.034"
}

Štrbac, S., Srejić, I.,& Rakočević, Z. Lj.. (2017). Catalysis of oxygen reduction on electrochemically activated polycrystalline gold by Pd nanoislands in alkaline solution. in Journal of Electroanalytical Chemistry, 789, 76-84.
https://doi.org/10.1016/j.jelechem.2017.02.034

Štrbac S, Srejić I, Rakočević ZL. Catalysis of oxygen reduction on electrochemically activated polycrystalline gold by Pd nanoislands in alkaline solution. in Journal of Electroanalytical Chemistry. 2017;789:76-84.
doi:10.1016/j.jelechem.2017.02.034 .

Štrbac, Svetlana, Srejić, Irina, Rakočević, Zlatko Lj., "Catalysis of oxygen reduction on electrochemically activated polycrystalline gold by Pd nanoislands in alkaline solution" in Journal of Electroanalytical Chemistry, 789 (2017):76-84,
https://doi.org/10.1016/j.jelechem.2017.02.034 . .

TY  - JOUR
AU  - Srejić, Irina
AU  - Smiljanić, Milutin Lj.
AU  - Rakočević, Zlatko Lj.
AU  - Štrbac, Svetlana
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1374
AB  - Catalytic properties of polycrystalline gold, Au(poly), were examined for the oxygen reduction reaction in alkaline solution using the rotating disc electrode technique. On electrochemically prepared Au(poly), oxygen reduction proceeds partly through 4e-reaction pathway resembling the activity of bare Au(100) in alkaline solution. Electrochemical behavior of such Au(100)-like polycrystalline gold electrode was compared with bare Au(100) surface, as well as with stepped Au(210)=Au[2(100)x(110)] and Au(533)=Au[4(111)x(100)] surfaces. It is shown that polycrystalline gold electrode behaved in a similar manner as stepped Au[n(111)x(100)] surfaces, meaning that the enrichment in (111)x(100) steps, rather than in (100) orientation is responsible for a partial 4e-reaction pathway in alkaline solution.
T2  - International Journal of Electrochemical Science
T1  - Oxygen Reduction on Au(100)-like Polycrystalline Gold Electrode in Alkaline Solution
VL  - 11
IS  - 12
SP  - 10436
EP  - 10448
DO  - 10.20964/2016.12.51
ER  - 

@article{
author = "Srejić, Irina and Smiljanić, Milutin Lj. and Rakočević, Zlatko Lj. and Štrbac, Svetlana",
year = "2016",
abstract = "Catalytic properties of polycrystalline gold, Au(poly), were examined for the oxygen reduction reaction in alkaline solution using the rotating disc electrode technique. On electrochemically prepared Au(poly), oxygen reduction proceeds partly through 4e-reaction pathway resembling the activity of bare Au(100) in alkaline solution. Electrochemical behavior of such Au(100)-like polycrystalline gold electrode was compared with bare Au(100) surface, as well as with stepped Au(210)=Au[2(100)x(110)] and Au(533)=Au[4(111)x(100)] surfaces. It is shown that polycrystalline gold electrode behaved in a similar manner as stepped Au[n(111)x(100)] surfaces, meaning that the enrichment in (111)x(100) steps, rather than in (100) orientation is responsible for a partial 4e-reaction pathway in alkaline solution.",
journal = "International Journal of Electrochemical Science",
title = "Oxygen Reduction on Au(100)-like Polycrystalline Gold Electrode in Alkaline Solution",
volume = "11",
number = "12",
pages = "10436-10448",
doi = "10.20964/2016.12.51"
}

Srejić, I., Smiljanić, M. Lj., Rakočević, Z. Lj.,& Štrbac, S.. (2016). Oxygen Reduction on Au(100)-like Polycrystalline Gold Electrode in Alkaline Solution. in International Journal of Electrochemical Science, 11(12), 10436-10448.
https://doi.org/10.20964/2016.12.51

Srejić I, Smiljanić ML, Rakočević ZL, Štrbac S. Oxygen Reduction on Au(100)-like Polycrystalline Gold Electrode in Alkaline Solution. in International Journal of Electrochemical Science. 2016;11(12):10436-10448.
doi:10.20964/2016.12.51 .

Srejić, Irina, Smiljanić, Milutin Lj., Rakočević, Zlatko Lj., Štrbac, Svetlana, "Oxygen Reduction on Au(100)-like Polycrystalline Gold Electrode in Alkaline Solution" in International Journal of Electrochemical Science, 11, no. 12 (2016):10436-10448,
https://doi.org/10.20964/2016.12.51 . .

TY  - JOUR
AU  - Srejić, Irina
AU  - Rakočević, Zlatko Lj.
AU  - Nenadović, Miloš
AU  - Štrbac, Svetlana
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/559
AB  - Oxygen reduction reaction (ORR) was investigated on polycrystalline palladium, Pd(poly), in acid and alkaline solutions using rotating-disc electrode technique. Pd(poly) was prepared in non-aqueous media which provided surface with good quality and reproducibility. According to cyclic voltammetry curves and to the analysis of polarization curves for ORR and of ones obtained separately for hydrogen peroxide reduction/oxidation reactions, ORR in both media proceeds mainly through 4e-series pathway in the potential regions where Pd surface is either oxide free or oxidized to PdOH. ORR occurs partly through 2e-reduction in the potential region where PdO is present on the surface. As revealed by cyclic voltammetry, spectroscopic ellipsometry and by atomic force microscopy, Pd(poly) surface undergoes both topography and chemical changes during ORR. Pd surface roughness as well as the degree of its oxidation increase during ORR. (C) 2015 Elsevier Ltd. All rights reserved.
T2  - Electrochimica Acta
T1  - Oxygen reduction on polycrystalline palladium in acid and alkaline solutions: topographical and chemical Pd surface changes
VL  - 169
SP  - 22
EP  - 31
DO  - 10.1016/j.electacta.2015.04.032
ER  - 

@article{
author = "Srejić, Irina and Rakočević, Zlatko Lj. and Nenadović, Miloš and Štrbac, Svetlana",
year = "2015",
abstract = "Oxygen reduction reaction (ORR) was investigated on polycrystalline palladium, Pd(poly), in acid and alkaline solutions using rotating-disc electrode technique. Pd(poly) was prepared in non-aqueous media which provided surface with good quality and reproducibility. According to cyclic voltammetry curves and to the analysis of polarization curves for ORR and of ones obtained separately for hydrogen peroxide reduction/oxidation reactions, ORR in both media proceeds mainly through 4e-series pathway in the potential regions where Pd surface is either oxide free or oxidized to PdOH. ORR occurs partly through 2e-reduction in the potential region where PdO is present on the surface. As revealed by cyclic voltammetry, spectroscopic ellipsometry and by atomic force microscopy, Pd(poly) surface undergoes both topography and chemical changes during ORR. Pd surface roughness as well as the degree of its oxidation increase during ORR. (C) 2015 Elsevier Ltd. All rights reserved.",
journal = "Electrochimica Acta",
title = "Oxygen reduction on polycrystalline palladium in acid and alkaline solutions: topographical and chemical Pd surface changes",
volume = "169",
pages = "22-31",
doi = "10.1016/j.electacta.2015.04.032"
}

Srejić, I., Rakočević, Z. Lj., Nenadović, M.,& Štrbac, S.. (2015). Oxygen reduction on polycrystalline palladium in acid and alkaline solutions: topographical and chemical Pd surface changes. in Electrochimica Acta, 169, 22-31.
https://doi.org/10.1016/j.electacta.2015.04.032

Srejić I, Rakočević ZL, Nenadović M, Štrbac S. Oxygen reduction on polycrystalline palladium in acid and alkaline solutions: topographical and chemical Pd surface changes. in Electrochimica Acta. 2015;169:22-31.
doi:10.1016/j.electacta.2015.04.032 .

Srejić, Irina, Rakočević, Zlatko Lj., Nenadović, Miloš, Štrbac, Svetlana, "Oxygen reduction on polycrystalline palladium in acid and alkaline solutions: topographical and chemical Pd surface changes" in Electrochimica Acta, 169 (2015):22-31,
https://doi.org/10.1016/j.electacta.2015.04.032 . .

TY  - JOUR
AU  - Smiljanić, Milutin Lj.
AU  - Srejić, Irina
AU  - Grgur, Branimir
AU  - Rakočević, Zlatko Lj.
AU  - Štrbac, Svetlana
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5316
AB  - Hydrogen evolution reaction (HER) was studied on Pd/Au(1 1 1) bimetallic surfaces in alkaline solution. Au(1 1 1) was modified by palladium nanoislands spontaneously deposited using PdSO4 center dot 2H(2)O and PdCl2 salts. As revealed from both surface topography Atomic Force Microscopy (AFM) and phase AFM images, for the same deposition conditions, the obtained Pd/Au(1 1 1) nanostructures differ depending on the counter anion in the depositing palladium salt. These differences are reflected on their catalytic activity toward HER, which occurs between the potentials for pure consisting metals. HER proceeded with the same mechanism, but it is shifted to more positive potentials for Pd/Au(1 1 1) nanostructures obtained using PdCl2 salt with respect to ones obtained using PdSO4 salt. Better catalytic activity of Pd/Au(1 1 1) nanostructures obtained using PdCl2 salt can be explained by their surface structure consisting of smaller and thinner Pd nanoislands, preferentially deposited at steps, which provides more Pd and Pd/Au sites suitable for hydrogen evolution reaction. (C) 2012 Elsevier Ltd. All rights reserved.
T2  - Electrochimica Acta
T1  - Catalysis of hydrogen evolution on different Pd/Au(111) nanostructures in alkaline solution
VL  - 88
SP  - 589
EP  - 596
DO  - 10.1016/j.electacta.2012.10.128
ER  - 

@article{
author = "Smiljanić, Milutin Lj. and Srejić, Irina and Grgur, Branimir and Rakočević, Zlatko Lj. and Štrbac, Svetlana",
year = "2013",
abstract = "Hydrogen evolution reaction (HER) was studied on Pd/Au(1 1 1) bimetallic surfaces in alkaline solution. Au(1 1 1) was modified by palladium nanoislands spontaneously deposited using PdSO4 center dot 2H(2)O and PdCl2 salts. As revealed from both surface topography Atomic Force Microscopy (AFM) and phase AFM images, for the same deposition conditions, the obtained Pd/Au(1 1 1) nanostructures differ depending on the counter anion in the depositing palladium salt. These differences are reflected on their catalytic activity toward HER, which occurs between the potentials for pure consisting metals. HER proceeded with the same mechanism, but it is shifted to more positive potentials for Pd/Au(1 1 1) nanostructures obtained using PdCl2 salt with respect to ones obtained using PdSO4 salt. Better catalytic activity of Pd/Au(1 1 1) nanostructures obtained using PdCl2 salt can be explained by their surface structure consisting of smaller and thinner Pd nanoislands, preferentially deposited at steps, which provides more Pd and Pd/Au sites suitable for hydrogen evolution reaction. (C) 2012 Elsevier Ltd. All rights reserved.",
journal = "Electrochimica Acta",
title = "Catalysis of hydrogen evolution on different Pd/Au(111) nanostructures in alkaline solution",
volume = "88",
pages = "589-596",
doi = "10.1016/j.electacta.2012.10.128"
}

Smiljanić, M. Lj., Srejić, I., Grgur, B., Rakočević, Z. Lj.,& Štrbac, S.. (2013). Catalysis of hydrogen evolution on different Pd/Au(111) nanostructures in alkaline solution. in Electrochimica Acta, 88, 589-596.
https://doi.org/10.1016/j.electacta.2012.10.128

Smiljanić ML, Srejić I, Grgur B, Rakočević ZL, Štrbac S. Catalysis of hydrogen evolution on different Pd/Au(111) nanostructures in alkaline solution. in Electrochimica Acta. 2013;88:589-596.
doi:10.1016/j.electacta.2012.10.128 .

Smiljanić, Milutin Lj., Srejić, Irina, Grgur, Branimir, Rakočević, Zlatko Lj., Štrbac, Svetlana, "Catalysis of hydrogen evolution on different Pd/Au(111) nanostructures in alkaline solution" in Electrochimica Acta, 88 (2013):589-596,
https://doi.org/10.1016/j.electacta.2012.10.128 . .

TY  - JOUR
AU  - Smiljanić, Milutin Lj.
AU  - Srejić, Irina
AU  - Grgur, B.
AU  - Rakočević, Zlatko Lj.
AU  - Štrbac, Svetlana
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5344
AB  - Pronounced catalysis of hydrogen evolution reaction (HER) by rhodium nanoislands spontaneously deposited on Au(111) has been observed. Different Rh/Au(111) nanostructures were characterized ex situ by both height and phase imaging AFM. The most pronounced catalytic activity for HER in 0.5 M H2SO4 was obtained for 50% Rh coverage. This is ascribed to the suitable size of Rh nanoislands and to the electronic modification of Rh deposit by Au(111) substrate. (C) 2012 Elsevier B.V. All rights reserved.
T2  - Electrochemistry Communications
T1  - Hydrogen evolution on Au(111) catalyzed by rhodium nanoislands
VL  - 28
SP  - 37
EP  - 39
DO  - 10.1016/j.elecom.2012.12.009
ER  - 

@article{
author = "Smiljanić, Milutin Lj. and Srejić, Irina and Grgur, B. and Rakočević, Zlatko Lj. and Štrbac, Svetlana",
year = "2013",
abstract = "Pronounced catalysis of hydrogen evolution reaction (HER) by rhodium nanoislands spontaneously deposited on Au(111) has been observed. Different Rh/Au(111) nanostructures were characterized ex situ by both height and phase imaging AFM. The most pronounced catalytic activity for HER in 0.5 M H2SO4 was obtained for 50% Rh coverage. This is ascribed to the suitable size of Rh nanoislands and to the electronic modification of Rh deposit by Au(111) substrate. (C) 2012 Elsevier B.V. All rights reserved.",
journal = "Electrochemistry Communications",
title = "Hydrogen evolution on Au(111) catalyzed by rhodium nanoislands",
volume = "28",
pages = "37-39",
doi = "10.1016/j.elecom.2012.12.009"
}

Smiljanić, M. Lj., Srejić, I., Grgur, B., Rakočević, Z. Lj.,& Štrbac, S.. (2013). Hydrogen evolution on Au(111) catalyzed by rhodium nanoislands. in Electrochemistry Communications, 28, 37-39.
https://doi.org/10.1016/j.elecom.2012.12.009

Smiljanić ML, Srejić I, Grgur B, Rakočević ZL, Štrbac S. Hydrogen evolution on Au(111) catalyzed by rhodium nanoislands. in Electrochemistry Communications. 2013;28:37-39.
doi:10.1016/j.elecom.2012.12.009 .

Smiljanić, Milutin Lj., Srejić, Irina, Grgur, B., Rakočević, Zlatko Lj., Štrbac, Svetlana, "Hydrogen evolution on Au(111) catalyzed by rhodium nanoislands" in Electrochemistry Communications, 28 (2013):37-39,
https://doi.org/10.1016/j.elecom.2012.12.009 . .

TY  - JOUR
AU  - Štrbac, Svetlana
AU  - Srejić, Irina
AU  - Smiljanić, Milutin Lj.
AU  - Rakočević, Zlatko Lj.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5696
AB  - The effect of spontaneously deposited rhodium nanoislands on the electrocatalytic activity of polycrystalline gold, Au(poly), for oxygen reduction reaction (ORR) was studied using rotating disc electrode technique in 0.1 M HClO4 solution. Surface topography atomic force microscopy (AFM) images of obtained Rh/Au(poly) surfaces revealed that both the size and coverage of rhodium nanoislands increase with the deposition time, for a given depositing conditions. The exact values of rhodium coverage ranging from 50% to the full coverage, and the qualitative changes in the surface chemical composition with respect to bare gold were estimated from phase AFM images. Deposited Rh was also identified by the changes in cyclic voltammetry (CV) profiles from which potential limits for ORR were determined. Obtained Rh/Au(poly) surfaces have shown a significant shift of the initial potential for ORR to the more positive potentials with respect to pure gold already for 50% Rh coverage, indicating that a pronounced electronic effect is responsible for the lowering of the activation energy for oxygen adsorption. The initial potential increases only slightly with the further increase of Rh coverage. Reaction pathway changes from 2e- reduction at lower overpotentials to a partial 4e- reduction at higher overpotentials. The later is attributed to the increased activity of obtained Rh/Au(poly) surfaces towards hydrogen peroxide reduction (HPRR), which appear as an intermediate during ORR. The fraction of 4e- reduction slightly increases with the increase of Rh coverage. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Journal of Electroanalytical Chemistry
T1  - The effect of rhodium nanoislands on the electrocatalytic activity of gold for oxygen reduction in perchloric acid solution
VL  - 704
SP  - 24
EP  - 31
DO  - 10.1016/j.jelechem.2013.06.003
ER  - 

@article{
author = "Štrbac, Svetlana and Srejić, Irina and Smiljanić, Milutin Lj. and Rakočević, Zlatko Lj.",
year = "2013",
abstract = "The effect of spontaneously deposited rhodium nanoislands on the electrocatalytic activity of polycrystalline gold, Au(poly), for oxygen reduction reaction (ORR) was studied using rotating disc electrode technique in 0.1 M HClO4 solution. Surface topography atomic force microscopy (AFM) images of obtained Rh/Au(poly) surfaces revealed that both the size and coverage of rhodium nanoislands increase with the deposition time, for a given depositing conditions. The exact values of rhodium coverage ranging from 50% to the full coverage, and the qualitative changes in the surface chemical composition with respect to bare gold were estimated from phase AFM images. Deposited Rh was also identified by the changes in cyclic voltammetry (CV) profiles from which potential limits for ORR were determined. Obtained Rh/Au(poly) surfaces have shown a significant shift of the initial potential for ORR to the more positive potentials with respect to pure gold already for 50% Rh coverage, indicating that a pronounced electronic effect is responsible for the lowering of the activation energy for oxygen adsorption. The initial potential increases only slightly with the further increase of Rh coverage. Reaction pathway changes from 2e- reduction at lower overpotentials to a partial 4e- reduction at higher overpotentials. The later is attributed to the increased activity of obtained Rh/Au(poly) surfaces towards hydrogen peroxide reduction (HPRR), which appear as an intermediate during ORR. The fraction of 4e- reduction slightly increases with the increase of Rh coverage. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Journal of Electroanalytical Chemistry",
title = "The effect of rhodium nanoislands on the electrocatalytic activity of gold for oxygen reduction in perchloric acid solution",
volume = "704",
pages = "24-31",
doi = "10.1016/j.jelechem.2013.06.003"
}

Štrbac, S., Srejić, I., Smiljanić, M. Lj.,& Rakočević, Z. Lj.. (2013). The effect of rhodium nanoislands on the electrocatalytic activity of gold for oxygen reduction in perchloric acid solution. in Journal of Electroanalytical Chemistry, 704, 24-31.
https://doi.org/10.1016/j.jelechem.2013.06.003

Štrbac S, Srejić I, Smiljanić ML, Rakočević ZL. The effect of rhodium nanoislands on the electrocatalytic activity of gold for oxygen reduction in perchloric acid solution. in Journal of Electroanalytical Chemistry. 2013;704:24-31.
doi:10.1016/j.jelechem.2013.06.003 .

Štrbac, Svetlana, Srejić, Irina, Smiljanić, Milutin Lj., Rakočević, Zlatko Lj., "The effect of rhodium nanoislands on the electrocatalytic activity of gold for oxygen reduction in perchloric acid solution" in Journal of Electroanalytical Chemistry, 704 (2013):24-31,
https://doi.org/10.1016/j.jelechem.2013.06.003 . .

TY  - JOUR
AU  - Srejić, Irina
AU  - Smiljanić, Milutin Lj.
AU  - Grgur, Branimir
AU  - Rakočević, Zlatko Lj.
AU  - Štrbac, Svetlana
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4750
AB  - Oxygen reduction reaction (ORR) was studied on polycrystalline gold, Au(poly), modified by nanosized palladium islands in 0.1 M HClO4 solution using rotating disc electrode technique. Paladium was spontaneously deposited from 1 mM PdSO4 center dot 2H(2)O + 0.5 M H2SO4 solution for various deposition times at a submonolayer coverage. Topography of obtained Pd/Au(poly) surfaces was observed by tapping mode atomic force microscopy (AFM), while chemical surface composition changes were detected by simultaneously performed phase AFM. Deposited Pd islands were nonuniform in size and randomly distributed over the gold substrate. Size and number of Pd islands increase with the increase of the deposition time, and consequently surface coverage increases too. Deposited Pd was also identified by the changes in cyclic voltammetry (CV) profiles from which an active surface area was estimated. Obtained Pd/Au(poly) surfaces have shown a significant catalytic activity towards oxygen reduction reaction which increases with the increase of Pd islands coverage. The initial potential of ORR was shifted positively, while reaction pathway changes from 2e-reduction on pure gold to 4e-reduction on Pd modified gold. Additionally, obtained Pd/Au(poly) surfaces have shown a significant activity towards hydrogen peroxide reduction (HPRR), which appear as an intermediate during ORR. This supports the assumption that ORR on Pd/Au(poly) occurs partly through 4e-series reduction pathway, the fraction of which increases with the increase of Pd coverage. (C) 2012 Elsevier Ltd. All rights reserved.
T2  - Electrochimica Acta
T1  - Catalysis of oxygen reduction on Au modified by Pd nanoislands in perchloric acid solution
VL  - 64
SP  - 140
EP  - 146
DO  - 10.1016/j.electacta.2011.12.130
ER  - 

@article{
author = "Srejić, Irina and Smiljanić, Milutin Lj. and Grgur, Branimir and Rakočević, Zlatko Lj. and Štrbac, Svetlana",
year = "2012",
abstract = "Oxygen reduction reaction (ORR) was studied on polycrystalline gold, Au(poly), modified by nanosized palladium islands in 0.1 M HClO4 solution using rotating disc electrode technique. Paladium was spontaneously deposited from 1 mM PdSO4 center dot 2H(2)O + 0.5 M H2SO4 solution for various deposition times at a submonolayer coverage. Topography of obtained Pd/Au(poly) surfaces was observed by tapping mode atomic force microscopy (AFM), while chemical surface composition changes were detected by simultaneously performed phase AFM. Deposited Pd islands were nonuniform in size and randomly distributed over the gold substrate. Size and number of Pd islands increase with the increase of the deposition time, and consequently surface coverage increases too. Deposited Pd was also identified by the changes in cyclic voltammetry (CV) profiles from which an active surface area was estimated. Obtained Pd/Au(poly) surfaces have shown a significant catalytic activity towards oxygen reduction reaction which increases with the increase of Pd islands coverage. The initial potential of ORR was shifted positively, while reaction pathway changes from 2e-reduction on pure gold to 4e-reduction on Pd modified gold. Additionally, obtained Pd/Au(poly) surfaces have shown a significant activity towards hydrogen peroxide reduction (HPRR), which appear as an intermediate during ORR. This supports the assumption that ORR on Pd/Au(poly) occurs partly through 4e-series reduction pathway, the fraction of which increases with the increase of Pd coverage. (C) 2012 Elsevier Ltd. All rights reserved.",
journal = "Electrochimica Acta",
title = "Catalysis of oxygen reduction on Au modified by Pd nanoislands in perchloric acid solution",
volume = "64",
pages = "140-146",
doi = "10.1016/j.electacta.2011.12.130"
}

Srejić, I., Smiljanić, M. Lj., Grgur, B., Rakočević, Z. Lj.,& Štrbac, S.. (2012). Catalysis of oxygen reduction on Au modified by Pd nanoislands in perchloric acid solution. in Electrochimica Acta, 64, 140-146.
https://doi.org/10.1016/j.electacta.2011.12.130

Srejić I, Smiljanić ML, Grgur B, Rakočević ZL, Štrbac S. Catalysis of oxygen reduction on Au modified by Pd nanoislands in perchloric acid solution. in Electrochimica Acta. 2012;64:140-146.
doi:10.1016/j.electacta.2011.12.130 .

Srejić, Irina, Smiljanić, Milutin Lj., Grgur, Branimir, Rakočević, Zlatko Lj., Štrbac, Svetlana, "Catalysis of oxygen reduction on Au modified by Pd nanoislands in perchloric acid solution" in Electrochimica Acta, 64 (2012):140-146,
https://doi.org/10.1016/j.electacta.2011.12.130 . .

TY  - JOUR
AU  - Smiljanić, Milutin Lj.
AU  - Srejić, Irina
AU  - Marinovic, Vedrana M.
AU  - Rakočević, Zlatko Lj.
AU  - Štrbac, Svetlana
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5134
AB  - The oxygen reduction reaction (ORR) was studied on a polycrystalline Pt electrode in 0.1 M NaCl electrolyte containing various amounts of acetonitrile (AcN). The state of the electrode surface was characterized by cyclic voltammetry in oxygen free electrolytes, while ORR studies were performed on a polycrystalline Pt rotating disc electrode by linear sweep voltammetry in oxygen saturated electrolytes. The acetonitrile is chemisorbed on Pt over a wide potential range, inhibiting both hydrogen adsorption and oxide formation. The extent of AcN chemisorption depends on its concentration in the solution. The initial potential of oxygen reduction is shifted negatively, while the ORR current is increasingly reduced with the increase of AcN concentration. Complete inhibition of ORR in the potential range of AcN and Cl anion coadsorption is achieved for a 0.1 M NaCl + 1 M AcN solution.
T2  - Hemijska industrija
T1  - Inhibiting effect of acetonitrile on oxygen reduction on polycrystalline Pt electrode in sodium chloride solution
VL  - 66
IS  - 3
SP  - 327
EP  - 333
DO  - 10.2298/HEMIND111010097S
ER  - 

@article{
author = "Smiljanić, Milutin Lj. and Srejić, Irina and Marinovic, Vedrana M. and Rakočević, Zlatko Lj. and Štrbac, Svetlana",
year = "2012",
abstract = "The oxygen reduction reaction (ORR) was studied on a polycrystalline Pt electrode in 0.1 M NaCl electrolyte containing various amounts of acetonitrile (AcN). The state of the electrode surface was characterized by cyclic voltammetry in oxygen free electrolytes, while ORR studies were performed on a polycrystalline Pt rotating disc electrode by linear sweep voltammetry in oxygen saturated electrolytes. The acetonitrile is chemisorbed on Pt over a wide potential range, inhibiting both hydrogen adsorption and oxide formation. The extent of AcN chemisorption depends on its concentration in the solution. The initial potential of oxygen reduction is shifted negatively, while the ORR current is increasingly reduced with the increase of AcN concentration. Complete inhibition of ORR in the potential range of AcN and Cl anion coadsorption is achieved for a 0.1 M NaCl + 1 M AcN solution.",
journal = "Hemijska industrija",
title = "Inhibiting effect of acetonitrile on oxygen reduction on polycrystalline Pt electrode in sodium chloride solution",
volume = "66",
number = "3",
pages = "327-333",
doi = "10.2298/HEMIND111010097S"
}

Smiljanić, M. Lj., Srejić, I., Marinovic, V. M., Rakočević, Z. Lj.,& Štrbac, S.. (2012). Inhibiting effect of acetonitrile on oxygen reduction on polycrystalline Pt electrode in sodium chloride solution. in Hemijska industrija, 66(3), 327-333.
https://doi.org/10.2298/HEMIND111010097S

Smiljanić ML, Srejić I, Marinovic VM, Rakočević ZL, Štrbac S. Inhibiting effect of acetonitrile on oxygen reduction on polycrystalline Pt electrode in sodium chloride solution. in Hemijska industrija. 2012;66(3):327-333.
doi:10.2298/HEMIND111010097S .

Smiljanić, Milutin Lj., Srejić, Irina, Marinovic, Vedrana M., Rakočević, Zlatko Lj., Štrbac, Svetlana, "Inhibiting effect of acetonitrile on oxygen reduction on polycrystalline Pt electrode in sodium chloride solution" in Hemijska industrija, 66, no. 3 (2012):327-333,
https://doi.org/10.2298/HEMIND111010097S . .

TY  - JOUR
AU  - Smiljanić, Milutin Lj.
AU  - Srejić, Irina
AU  - Grgur, Branimir
AU  - Rakočević, Zlatko Lj.
AU  - Štrbac, Svetlana
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5217
AB  - Hydrogen evolution reaction was studied on Au(111) modified by palladium spontaneously deposited on the Au(111) surface from (1 mM PdSO4 center dot 2 H2O + 0.5 M H2SO4) solution at a submonolayer coverage. Number and size of Pd islands increased with the increase of the deposition time as observed by ex situ surface topography atomic force microscopy (AFM). The overall coverage of the underlying Au(111) surface by the deposited Pd islands was estimated from simultaneously acquired phase AFM images, which provided a clear contrast between different materials. The obtained Pd/Au(111) surfaces have shown a significant catalytic activity toward hydrogen evolution reaction in 0.5 M H2SO4 solution. This is discussed with respect to Pd islands size and coverage and to the influence of an electronic effect induced in Pd islands by the underlying Au(111) substrate.
T2  - Electrocatalysis
T1  - Catalysis of Hydrogen Evolution on Au(111) Modified by Spontaneously Deposited Pd Nanoislands
VL  - 3
IS  - 3-4
SP  - 369
EP  - 375
DO  - 10.1007/s12678-012-0093-2
ER  - 

@article{
author = "Smiljanić, Milutin Lj. and Srejić, Irina and Grgur, Branimir and Rakočević, Zlatko Lj. and Štrbac, Svetlana",
year = "2012",
abstract = "Hydrogen evolution reaction was studied on Au(111) modified by palladium spontaneously deposited on the Au(111) surface from (1 mM PdSO4 center dot 2 H2O + 0.5 M H2SO4) solution at a submonolayer coverage. Number and size of Pd islands increased with the increase of the deposition time as observed by ex situ surface topography atomic force microscopy (AFM). The overall coverage of the underlying Au(111) surface by the deposited Pd islands was estimated from simultaneously acquired phase AFM images, which provided a clear contrast between different materials. The obtained Pd/Au(111) surfaces have shown a significant catalytic activity toward hydrogen evolution reaction in 0.5 M H2SO4 solution. This is discussed with respect to Pd islands size and coverage and to the influence of an electronic effect induced in Pd islands by the underlying Au(111) substrate.",
journal = "Electrocatalysis",
title = "Catalysis of Hydrogen Evolution on Au(111) Modified by Spontaneously Deposited Pd Nanoislands",
volume = "3",
number = "3-4",
pages = "369-375",
doi = "10.1007/s12678-012-0093-2"
}

Smiljanić, M. Lj., Srejić, I., Grgur, B., Rakočević, Z. Lj.,& Štrbac, S.. (2012). Catalysis of Hydrogen Evolution on Au(111) Modified by Spontaneously Deposited Pd Nanoislands. in Electrocatalysis, 3(3-4), 369-375.
https://doi.org/10.1007/s12678-012-0093-2

Smiljanić ML, Srejić I, Grgur B, Rakočević ZL, Štrbac S. Catalysis of Hydrogen Evolution on Au(111) Modified by Spontaneously Deposited Pd Nanoislands. in Electrocatalysis. 2012;3(3-4):369-375.
doi:10.1007/s12678-012-0093-2 .

Smiljanić, Milutin Lj., Srejić, Irina, Grgur, Branimir, Rakočević, Zlatko Lj., Štrbac, Svetlana, "Catalysis of Hydrogen Evolution on Au(111) Modified by Spontaneously Deposited Pd Nanoislands" in Electrocatalysis, 3, no. 3-4 (2012):369-375,
https://doi.org/10.1007/s12678-012-0093-2 . .

TY  - JOUR
AU  - Srejić, Irina
AU  - Smiljanić, Milutin Lj.
AU  - Rakočević, Zlatko Lj.
AU  - Štrbac, Svetlana
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4588
AB  - Oxygen reduction reaction (ORR) was studied on polycrystalline Pt and Au electrodes in 0.1 M HClO(4) solutions containing various amounts of acetonitrile (AcN). The state of the electrode surface was characterized by cyclic voltammetry in oxygen free electrolytes, while ORR studies were performed on polycrystalline Pt and Au rotating disc electrodes by a linear sweep voltammetry in oxygen saturated electrolytes. Acetonitrile is chemisorbed on Pt over a wide potential range inhibiting both H adsorption and oxide formation. The extent of AcN chemisorption depends on its concentration in the solution. Initial potential of oxygen reduction is shifted negatively, while the kinetics of ORR is increasingly hindered with the increase of AcN concentration. Inhibiting effect of acetonitrile on ORR is pronounced on both Pt(poly) and Au(poly). Complete inhibition of ORR in the potential range of AcN chemisorptions is achieved for 0.1 M HClO(4) solution containing 1 M AcN on Au(poly) and 3 M AcN on Pt(poly).
T2  - International Journal of Electrochemical Science
T1  - Oxygen Reduction on Polycrystalline Pt and Au Electrodes in Perchloric Acid Solution in the Presence of Acetonitrile
VL  - 6
IS  - 8
SP  - 3344
EP  - 3354
UR  - https://hdl.handle.net/21.15107/rcub_vinar_4588
ER  - 

@article{
author = "Srejić, Irina and Smiljanić, Milutin Lj. and Rakočević, Zlatko Lj. and Štrbac, Svetlana",
year = "2011",
abstract = "Oxygen reduction reaction (ORR) was studied on polycrystalline Pt and Au electrodes in 0.1 M HClO(4) solutions containing various amounts of acetonitrile (AcN). The state of the electrode surface was characterized by cyclic voltammetry in oxygen free electrolytes, while ORR studies were performed on polycrystalline Pt and Au rotating disc electrodes by a linear sweep voltammetry in oxygen saturated electrolytes. Acetonitrile is chemisorbed on Pt over a wide potential range inhibiting both H adsorption and oxide formation. The extent of AcN chemisorption depends on its concentration in the solution. Initial potential of oxygen reduction is shifted negatively, while the kinetics of ORR is increasingly hindered with the increase of AcN concentration. Inhibiting effect of acetonitrile on ORR is pronounced on both Pt(poly) and Au(poly). Complete inhibition of ORR in the potential range of AcN chemisorptions is achieved for 0.1 M HClO(4) solution containing 1 M AcN on Au(poly) and 3 M AcN on Pt(poly).",
journal = "International Journal of Electrochemical Science",
title = "Oxygen Reduction on Polycrystalline Pt and Au Electrodes in Perchloric Acid Solution in the Presence of Acetonitrile",
volume = "6",
number = "8",
pages = "3344-3354",
url = "https://hdl.handle.net/21.15107/rcub_vinar_4588"
}

Srejić, I., Smiljanić, M. Lj., Rakočević, Z. Lj.,& Štrbac, S.. (2011). Oxygen Reduction on Polycrystalline Pt and Au Electrodes in Perchloric Acid Solution in the Presence of Acetonitrile. in International Journal of Electrochemical Science, 6(8), 3344-3354.
https://hdl.handle.net/21.15107/rcub_vinar_4588

Srejić I, Smiljanić ML, Rakočević ZL, Štrbac S. Oxygen Reduction on Polycrystalline Pt and Au Electrodes in Perchloric Acid Solution in the Presence of Acetonitrile. in International Journal of Electrochemical Science. 2011;6(8):3344-3354.
https://hdl.handle.net/21.15107/rcub_vinar_4588 .

Srejić, Irina, Smiljanić, Milutin Lj., Rakočević, Zlatko Lj., Štrbac, Svetlana, "Oxygen Reduction on Polycrystalline Pt and Au Electrodes in Perchloric Acid Solution in the Presence of Acetonitrile" in International Journal of Electrochemical Science, 6, no. 8 (2011):3344-3354,
https://hdl.handle.net/21.15107/rcub_vinar_4588 .