| 玻碳电极上多巴胺的氧化还原机理 |
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| 引用本文： | 冶保献,李风菊,张俊,靳保辉.玻碳电极上多巴胺的氧化还原机理[J].化学研究,2003,14(1):44-46,50. |
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| 作者姓名： | 冶保献 李风菊 张俊 靳保辉 |
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| 作者单位： | 1. 郑州大学,化学系,郑州,450052
2. 郑州教育学院,郑州,450052 |
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| 基金项目： | 河南省自然科学基金项目(0211020400). |
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| 摘 要： | 用电化学方法和光谱电化学方法详细研究了多巴胺(DA)在玻碳(GC)电极表面的反应机理.结果表明DA的电氧化是一个单电子转移过程而不是一个双电子转移过程,在此过程中有半醌自由基中间体存在.用多种电化学手段测定了电极反应动力学参数,提出了新的电极反应机理.
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| 关 键 词： | 电化学 光谱电化学 多巴胺 机理 |
| 文章编号： | 1008-1011(2003)01-0044-03 |
Redox Mechanism of Dopamine at GC Electrode |
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| Abstract: | The dopamine redox mechanism on GC electrode surface was studied by electrochemical and spectroelectrochemical techniques. The results indicate that the electro oxidation of DA is an one electron transfer process other than a two electron transfer process reported in literature. The intermediate of o semiquinone free radical exists in this process. Cyclic voltammetry shows quasi reversible process by cyclic potential scanning between -0.1 V and 0.6 V. The saturated adsorption amount and reaction rate constant ks were investigated with various electrochemical methods. |
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| Keywords: | electrochemistry spectroelectrochemistry dopamine mechanism |
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