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The influence of pH on reaction pathways for O2 reduction on the Au(100) face

Authorized Users Only
1996
Authors
Štrbac, Svetlana
Adžić, Radoslav R.
Article (Published version)
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Abstract
Oxygen reduction on the Au(100) face was studied by the rotating disk-ring electrode technique in solutions of anions which adsorb strongly on gold (HSO4-/SO42- and/or OH-) over the entire pH range. The specific adsorption of OH- anions, which is a pH dependent process, is found to play the key role in determining the reaction pathways. In the absence of OH- adsorption, for pHs below 6, the reduction of O-2 begins as a 2e-process. Due to the increase in local pH during O-2 reduction, the reaction pathway turns into a 4e-reduction at a certain potential depending on the pH of the solution. For pHs higher than 6, O-2 reduction begins as a 4e-process in the potential region where specifically adsorbed OH- anions are present.
Keywords:
Gold single crystal / Oxygen reduction / pH / Reaction pathways / Rotating disk-ring
Source:
Electrochimica Acta, 1996, 41, 18, 2903-2908
Publisher:
  • Elsevier

DOI: 10.1016/0013-4686(96)00120-X

ISSN: 0013-4686

WoS: A1996VK15100015

Scopus: 2-s2.0-0030576814
[ Google Scholar ]
115
103
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/4350
Collections
  • Radovi istraživača / Researchers' publications
Institution
IHTM
TY  - JOUR
AU  - Štrbac, Svetlana
AU  - Adžić, Radoslav R.
PY  - 1996
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4350
AB  - Oxygen reduction on the Au(100) face was studied by the rotating disk-ring electrode technique in solutions of anions which adsorb strongly on gold (HSO4-/SO42- and/or OH-) over the entire pH range. The specific adsorption of OH- anions, which is a pH dependent process, is found to play the key role in determining the reaction pathways. In the absence of OH- adsorption, for pHs below 6, the reduction of O-2 begins as a 2e-process. Due to the increase in local pH during O-2 reduction, the reaction pathway turns into a 4e-reduction at a certain potential depending on the pH of the solution. For pHs higher than 6, O-2 reduction begins as a 4e-process in the potential region where specifically adsorbed OH- anions are present.
PB  - Elsevier
T2  - Electrochimica Acta
T1  - The influence of pH on reaction pathways for O2 reduction on the Au(100) face
VL  - 41
IS  - 18
SP  - 2903
EP  - 2908
DO  - 10.1016/0013-4686(96)00120-X
ER  - 
@article{
author = "Štrbac, Svetlana and Adžić, Radoslav R.",
year = "1996",
url = "https://cer.ihtm.bg.ac.rs/handle/123456789/4350",
abstract = "Oxygen reduction on the Au(100) face was studied by the rotating disk-ring electrode technique in solutions of anions which adsorb strongly on gold (HSO4-/SO42- and/or OH-) over the entire pH range. The specific adsorption of OH- anions, which is a pH dependent process, is found to play the key role in determining the reaction pathways. In the absence of OH- adsorption, for pHs below 6, the reduction of O-2 begins as a 2e-process. Due to the increase in local pH during O-2 reduction, the reaction pathway turns into a 4e-reduction at a certain potential depending on the pH of the solution. For pHs higher than 6, O-2 reduction begins as a 4e-process in the potential region where specifically adsorbed OH- anions are present.",
publisher = "Elsevier",
journal = "Electrochimica Acta",
title = "The influence of pH on reaction pathways for O2 reduction on the Au(100) face",
volume = "41",
number = "18",
pages = "2903-2908",
doi = "10.1016/0013-4686(96)00120-X"
}
Štrbac S, Adžić RR. The influence of pH on reaction pathways for O2 reduction on the Au(100) face. Electrochimica Acta. 1996;41(18):2903-2908
Štrbac, S.,& Adžić, R. R. (1996). The influence of pH on reaction pathways for O2 reduction on the Au(100) face.
Electrochimica ActaElsevier., 41(18), 2903-2908.
https://doi.org/10.1016/0013-4686(96)00120-X
Štrbac Svetlana, Adžić Radoslav R., "The influence of pH on reaction pathways for O2 reduction on the Au(100) face" 41, no. 18 (1996):2903-2908,
https://doi.org/10.1016/0013-4686(96)00120-X .

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