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.
TY - JOUR
AU - Srejić, Irina
AU - Rakočević, Zlatko Lj.
AU - Nenadović, Miloš
AU - Štrbac, Svetlana
PY - 2015
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1642
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.
PB - Oxford : Pergamon-Elsevier Science Ltd
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.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
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
Oxford : Pergamon-Elsevier Science Ltd., 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 . .
