Abstract
This study reports how the electrocatalytic activities of gold (Au) electrodes change with aging under ambient conditions. The enhanced electrocatalytic activities of Au electrodes observed after piranha treatment, mechanical polishing, or NaBH4 treatment decrease with aging. The enhanced electrocatalytic activities toward p-benzoquinone reduction and glucose oxidation decrease 7 days after the treatments, even though the change in surface contamination during aging is not significant. The surface roughness of the Au electrodes is maintained during the NaBH4 treatment, whereas it changes substantially during the piranha treatment and mechanical polishing.
Original language | English |
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Pages (from-to) | 41-46 |
Number of pages | 6 |
Journal | Journal of Electroanalytical Chemistry |
Volume | 675 |
DOIs | |
Publication status | Published - 2012 Jun 15 |
Externally published | Yes |
Bibliographical note
Funding Information:This study was supported by the Basic Science Research Program (2012006478 and 2009-0085182) and the Public Welfare & Safety Research Program (2010-0020772) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology. We thank Korean Basic Science Institute (KBSI) for XPS data.
Keywords
- Aging
- Electrocatalytic activity
- Gold electrode
- Piranha treatment
ASJC Scopus subject areas
- Analytical Chemistry
- General Chemical Engineering
- Electrochemistry