| 铂电极上吡啶吸附及其取向的现场红外反射吸收光谱研究 |
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| 引用本文： | 张元俊,冯子刚.铂电极上吡啶吸附及其取向的现场红外反射吸收光谱研究[J].高等学校化学学报,1990,11(8):868-872. |
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| 作者姓名： | 张元俊 冯子刚 |
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| 作者单位： | 武汉大学化学系
(张久俊，陆君涛，查全性)，武汉大学分析测试中心(冯子刚) |
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| 基金项目： | 国家教育委员会博士点基金 |
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| 摘 要： | 用电化学和现场红外反射吸收光谱方法研究了Pt电极上吡啶的吸附取向。结果表明,在-0.80～0.80 V(vs SCE)范围内皆存在吡啶吸附,在较负电势下(约-0.80～-0.20 V),吡啶环可能以2种方式吸附于电极表面上,随电势变正(约-0.20～0.80V)由垂直取向向平躺取向转变,该平躺吸附降低了电极表面及其附近水分子结构的有序性。
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| 关 键 词： | 铂电极 吡啶 吸附 取向 |
An In-situ FTIR Reflection-Absorption Spectroscopic Study of Adsorption and Orientation of Pyridine on Pt Electrode |
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| Zhang Jiujun,Lu Juntao,Cha Chuansin.An In-situ FTIR Reflection-Absorption Spectroscopic Study of Adsorption and Orientation of Pyridine on Pt Electrode[J].Chemical Research In Chinese Universities,1990,11(8):868-872. |
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| Authors: | Zhang Jiujun Lu Juntao Cha Chuansin |
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| Abstract: | The adsorption and orientation of pyridine on platinum electrode surface were studied by using cyclic voltammetry and in-situ FTIR reflection-absorption spectroscopy(SNIFTIRS). The experimental results obtained show that the adsorption of pyridine occurred over the whole potential range of- 0. 80-0. 80 V(vs SCE). In the potential range of - 0. 80--0. 20 V, pyridine rings were toproposed absorb in the direction perpendicular to the electrode surface in one or two different modes, while in the range of -0. 20-0. 8 V, the flat orientation was found to be predominant. The flat orientation of adsorption probably also weakened the ordering of water molecules at and near the electrode surface. |
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| Keywords: | In-situ reflection-absorption spectroelectrochemisty Adsorption and orientation of pyri-dine Platinum electrode |
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