Use of 'split waves' for the measurement of electrocatalytic kinetics: methyl viologen mediated oxygen reduction on a boron-doped diamond electrode.
The mediated reduction of oxygenviathe reduced form of methyl viologen is studied voltammetrically. The investigation is facilitated through the use of a boron-doped diamond electrode, allowing the catalytic response to be clearly delineated from that of the direct oxygen reduction process at the el...
| Glavni autori: | , , , |
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| Format: | Journal article |
| Jezik: | English |
| Izdano: |
Royal Society of Chemistry
2013
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| _version_ | 1826287266035662848 |
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| author | Lin, Q Li, Q Batchelor-McAuley, C Compton, R |
| author_facet | Lin, Q Li, Q Batchelor-McAuley, C Compton, R |
| author_sort | Lin, Q |
| collection | OXFORD |
| description | The mediated reduction of oxygenviathe reduced form of methyl viologen is studied voltammetrically. The investigation is facilitated through the use of a boron-doped diamond electrode, allowing the catalytic response to be clearly delineated from that of the direct oxygen reduction process at the electrode surface. From simulation a high homogeneous electron transfer rate (6x10^9 M^-1 s^-1) is found for the one-electron reduction of oxygen to superoxide. This value is in close agreement with that found using non-electrochemical methods and is significantly higher than the values previously reported in electrochemical studies. In the latter case it is demonstrated that the underestimation of the electron transfer rate arises due to oversimplification of the reaction mechanism. |
| first_indexed | 2024-03-07T01:56:04Z |
| format | Journal article |
| id | oxford-uuid:9bc2876a-c8e4-41fb-85d0-543b65f9536b |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:56:04Z |
| publishDate | 2013 |
| publisher | Royal Society of Chemistry |
| record_format | dspace |
| spelling | oxford-uuid:9bc2876a-c8e4-41fb-85d0-543b65f9536b2022-03-27T00:30:58ZUse of 'split waves' for the measurement of electrocatalytic kinetics: methyl viologen mediated oxygen reduction on a boron-doped diamond electrode.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9bc2876a-c8e4-41fb-85d0-543b65f9536bEnglishSymplectic Elements at OxfordRoyal Society of Chemistry2013Lin, QLi, QBatchelor-McAuley, CCompton, RThe mediated reduction of oxygenviathe reduced form of methyl viologen is studied voltammetrically. The investigation is facilitated through the use of a boron-doped diamond electrode, allowing the catalytic response to be clearly delineated from that of the direct oxygen reduction process at the electrode surface. From simulation a high homogeneous electron transfer rate (6x10^9 M^-1 s^-1) is found for the one-electron reduction of oxygen to superoxide. This value is in close agreement with that found using non-electrochemical methods and is significantly higher than the values previously reported in electrochemical studies. In the latter case it is demonstrated that the underestimation of the electron transfer rate arises due to oversimplification of the reaction mechanism. |
| spellingShingle | Lin, Q Li, Q Batchelor-McAuley, C Compton, R Use of 'split waves' for the measurement of electrocatalytic kinetics: methyl viologen mediated oxygen reduction on a boron-doped diamond electrode. |
| title | Use of 'split waves' for the measurement of electrocatalytic kinetics: methyl viologen mediated oxygen reduction on a boron-doped diamond electrode. |
| title_full | Use of 'split waves' for the measurement of electrocatalytic kinetics: methyl viologen mediated oxygen reduction on a boron-doped diamond electrode. |
| title_fullStr | Use of 'split waves' for the measurement of electrocatalytic kinetics: methyl viologen mediated oxygen reduction on a boron-doped diamond electrode. |
| title_full_unstemmed | Use of 'split waves' for the measurement of electrocatalytic kinetics: methyl viologen mediated oxygen reduction on a boron-doped diamond electrode. |
| title_short | Use of 'split waves' for the measurement of electrocatalytic kinetics: methyl viologen mediated oxygen reduction on a boron-doped diamond electrode. |
| title_sort | use of split waves for the measurement of electrocatalytic kinetics methyl viologen mediated oxygen reduction on a boron doped diamond electrode |
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