The electrochemical reaction mechanism of selenocystine on selenium-gold film modified glassy carbon electrode
| Autor: | Tao Cheng, Xiaoli Yan, Yan Bai, Rui Li, Wenjie Zheng, Xiangyuan Ruan |
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| Rok vydání: | 2005 |
| Předmět: |
Half-reaction
Working electrode Molecular Structure Chemistry Surface Properties Inorganic chemistry Surfaces and Interfaces General Medicine Reference electrode Redox Carbon Catalysis Selenium Colloid and Surface Chemistry Electrochemical reaction mechanism Organoselenium Compounds Electrochemistry Cystine Glass Gold Physical and Theoretical Chemistry Rotating disk electrode Voltammetry Electrodes Biotechnology |
| Zdroj: | Colloids and surfaces. B, Biointerfaces. 49(2) |
| ISSN: | 0927-7765 |
| Popis: | A simple and selective voltammetric method based on selenium-gold film modified glassy carbon electrode has been developed for investigating electrochemical reaction mechanism of selenocystine. With N2 saturated, redox reactions between selenocystine (SeC) and selenocysteine (SeCys) were judged to be two simple electron-transfer processes. With air saturated, the reduction reaction was diagnosed to be EC catalytic reaction (the chemical oxidation reaction of the SeCys by O2 (C) following the electron-transfer reaction (E)) and oxidation reaction is a simple electron-transfer process. With pure O2 saturated, only reduction peak was observed and the reaction was judged to be EC catalytic reaction. The electron-transfer numbers of redox reaction were calculated to be 2 by chronocoulometry and rotating disk electrode. |
| Databáze: | OpenAIRE |
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