Oxygen reduction was studied for the first time using a single crystal electrode in a rotating disc-ring arrangement. The Au (311) surface shows a complex behaviour, with a very high activity in certain potential regions. The first electron transfer is rate determining in the region of 4-electron reduction. As with Au (100), a 4 e- reduction changes into a 2 e- process, which reverts back to a 4 e-reaction at very negative potentials. Based on a general reaction scheme of O2 reduction, a map of the operating potential dependent reaction pathways was constructed. Nearly 60% of the mass flux of O2 undergoes a direct reduction to OH- in the region of mixed control. The high activity of Au (311) was ascribed to a high step density and AuOH present on its surface.
Keywords:
oxygen / Oxygen reduction / electron transfer / Electrochemistry / single crystal electrode
Source:
Journal of Electroanalytical Chemistry, 1988, 240, 1-2, 239-252
TY - JOUR
AU - Anastasijević, Nikola A.
AU - Štrbac, Svetlana
AU - Adžić, Radoslav R.
PY - 1988
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/4355
AB - Oxygen reduction was studied for the first time using a single crystal electrode in a rotating disc-ring arrangement. The Au (311) surface shows a complex behaviour, with a very high activity in certain potential regions. The first electron transfer is rate determining in the region of 4-electron reduction. As with Au (100), a 4 e- reduction changes into a 2 e- process, which reverts back to a 4 e-reaction at very negative potentials. Based on a general reaction scheme of O2 reduction, a map of the operating potential dependent reaction pathways was constructed. Nearly 60% of the mass flux of O2 undergoes a direct reduction to OH- in the region of mixed control. The high activity of Au (311) was ascribed to a high step density and AuOH present on its surface.
PB - Elsevier
T2 - Journal of Electroanalytical Chemistry
T1 - Oxygen reduction on the Au (311) electrode surface in alkaline electrolyte
VL - 240
IS - 1-2
SP - 239
EP - 252
DO - 10.1016/0022-0728(88)80326-7
ER -
@article{
author = "Anastasijević, Nikola A. and Štrbac, Svetlana and Adžić, Radoslav R.",
year = "1988",
url = "https://cer.ihtm.bg.ac.rs/handle/123456789/4355",
abstract = "Oxygen reduction was studied for the first time using a single crystal electrode in a rotating disc-ring arrangement. The Au (311) surface shows a complex behaviour, with a very high activity in certain potential regions. The first electron transfer is rate determining in the region of 4-electron reduction. As with Au (100), a 4 e- reduction changes into a 2 e- process, which reverts back to a 4 e-reaction at very negative potentials. Based on a general reaction scheme of O2 reduction, a map of the operating potential dependent reaction pathways was constructed. Nearly 60% of the mass flux of O2 undergoes a direct reduction to OH- in the region of mixed control. The high activity of Au (311) was ascribed to a high step density and AuOH present on its surface.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Oxygen reduction on the Au (311) electrode surface in alkaline electrolyte",
volume = "240",
number = "1-2",
pages = "239-252",
doi = "10.1016/0022-0728(88)80326-7"
}
Anastasijević, N. A., Štrbac, S.,& Adžić, R. R. (1988). Oxygen reduction on the Au (311) electrode surface in alkaline electrolyte.
Journal of Electroanalytical Chemistry
Elsevier., 240(1-2), 239-252.
https://doi.org/10.1016/0022-0728(88)80326-7
Anastasijević NA, Štrbac S, Adžić RR. Oxygen reduction on the Au (311) electrode surface in alkaline electrolyte. Journal of Electroanalytical Chemistry. 1988;240(1-2):239-252
Anastasijević Nikola A., Štrbac Svetlana, Adžić Radoslav R., "Oxygen reduction on the Au (311) electrode surface in alkaline electrolyte" Journal of Electroanalytical Chemistry, 240, no. 1-2 (1988):239-252,
https://doi.org/10.1016/0022-0728(88)80326-7 .
