Oxygen reduction on Au (100) and vicinal Au (910) and Au (11, 1, 1) faces in alkaline solution. A rotating disc-ring study
Само за регистроване кориснике
1992
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The kinetics of oxygen reduction have been studied on Au (100) and vicinal Au (910) and Au (11, 1, 1) faces in 0.1 M NaOH by a rotating disc-ring method. A very high activity of these surfaces for O2 reduction was demonstrated. The reaction involves a four-electron reduction without HO2- reaching the ring electrode in the presence of the AuOH-(1-λ2) layer on the Au (100) surface. At more negative potentials, as θAuOH → 0, a four-electron reduction takes place in an interactive pathway, followed by a two-electron series pathway and, at very large overpotentials, by a four-electron series pathway. The first electron transfer is the rate-determining step for all three faces. For vicinal faces, the region of the four-electron reduction is reduced due to the smaller region of AuOH formation. Evidence for the surface diffusion of HO2- was found from analysis of the disc-ring data. There were also indications for the splitting of the OO bond by AuOH in the region of the four-electron reductio...n. Maps of the reaction pathways have been constructed.
Кључне речи:
kinetics of oxygen reduction / rotating disc-ring method / Ring disk electrode / Electrochemical reactionИзвор:
Journal of Electroanalytical Chemistry, 1992, 323, 1-2, 179-195Издавач:
- Elsevier
Финансирање / пројекти:
- The Research Fund of S.R. Serbia, Yugoslavia
- The National Science Foundation, Washington,D C, USA through the Yugoslav-American Fund, Contract No. 966.
DOI: 10.1016/0022-0728(92)80010-2
ISSN: 0022-0728; 1572-6657
Scopus: 2-s2.0-0000712739
Институција/група
IHTMTY - JOUR AU - Štrbac, Svetlana AU - Anastasijević, Nikola A. AU - Adžić, Radoslav R. PY - 1992 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/4211 AB - The kinetics of oxygen reduction have been studied on Au (100) and vicinal Au (910) and Au (11, 1, 1) faces in 0.1 M NaOH by a rotating disc-ring method. A very high activity of these surfaces for O2 reduction was demonstrated. The reaction involves a four-electron reduction without HO2- reaching the ring electrode in the presence of the AuOH-(1-λ2) layer on the Au (100) surface. At more negative potentials, as θAuOH → 0, a four-electron reduction takes place in an interactive pathway, followed by a two-electron series pathway and, at very large overpotentials, by a four-electron series pathway. The first electron transfer is the rate-determining step for all three faces. For vicinal faces, the region of the four-electron reduction is reduced due to the smaller region of AuOH formation. Evidence for the surface diffusion of HO2- was found from analysis of the disc-ring data. There were also indications for the splitting of the OO bond by AuOH in the region of the four-electron reduction. Maps of the reaction pathways have been constructed. PB - Elsevier T2 - Journal of Electroanalytical Chemistry T1 - Oxygen reduction on Au (100) and vicinal Au (910) and Au (11, 1, 1) faces in alkaline solution. A rotating disc-ring study VL - 323 IS - 1-2 SP - 179 EP - 195 DO - 10.1016/0022-0728(92)80010-2 ER -
@article{ author = "Štrbac, Svetlana and Anastasijević, Nikola A. and Adžić, Radoslav R.", year = "1992", abstract = "The kinetics of oxygen reduction have been studied on Au (100) and vicinal Au (910) and Au (11, 1, 1) faces in 0.1 M NaOH by a rotating disc-ring method. A very high activity of these surfaces for O2 reduction was demonstrated. The reaction involves a four-electron reduction without HO2- reaching the ring electrode in the presence of the AuOH-(1-λ2) layer on the Au (100) surface. At more negative potentials, as θAuOH → 0, a four-electron reduction takes place in an interactive pathway, followed by a two-electron series pathway and, at very large overpotentials, by a four-electron series pathway. The first electron transfer is the rate-determining step for all three faces. For vicinal faces, the region of the four-electron reduction is reduced due to the smaller region of AuOH formation. Evidence for the surface diffusion of HO2- was found from analysis of the disc-ring data. There were also indications for the splitting of the OO bond by AuOH in the region of the four-electron reduction. Maps of the reaction pathways have been constructed.", publisher = "Elsevier", journal = "Journal of Electroanalytical Chemistry", title = "Oxygen reduction on Au (100) and vicinal Au (910) and Au (11, 1, 1) faces in alkaline solution. A rotating disc-ring study", volume = "323", number = "1-2", pages = "179-195", doi = "10.1016/0022-0728(92)80010-2" }
Štrbac, S., Anastasijević, N. A.,& Adžić, R. R.. (1992). Oxygen reduction on Au (100) and vicinal Au (910) and Au (11, 1, 1) faces in alkaline solution. A rotating disc-ring study. in Journal of Electroanalytical Chemistry Elsevier., 323(1-2), 179-195. https://doi.org/10.1016/0022-0728(92)80010-2
Štrbac S, Anastasijević NA, Adžić RR. Oxygen reduction on Au (100) and vicinal Au (910) and Au (11, 1, 1) faces in alkaline solution. A rotating disc-ring study. in Journal of Electroanalytical Chemistry. 1992;323(1-2):179-195. doi:10.1016/0022-0728(92)80010-2 .
Štrbac, Svetlana, Anastasijević, Nikola A., Adžić, Radoslav R., "Oxygen reduction on Au (100) and vicinal Au (910) and Au (11, 1, 1) faces in alkaline solution. A rotating disc-ring study" in Journal of Electroanalytical Chemistry, 323, no. 1-2 (1992):179-195, https://doi.org/10.1016/0022-0728(92)80010-2 . .