| 巯基—聚吡咯薄膜修饰电极的制备及其电化学性能 |
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| 引用本文： | 周延秀,朱果逸.巯基—聚吡咯薄膜修饰电极的制备及其电化学性能[J].功能高分子学报,1993,6(3):237-242. |
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| 作者姓名： | 周延秀 朱果逸 |
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| 作者单位： | 中国科学院长春应用化学研究所电分析化学开放研究实验室，中国科学院长春应用化学研究所电分析化学开放研究实验室，中国科学院长春应用化学研究所电分析化学开放研究实验室 长春 130022，长春 130022，长春 130022 |
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| 摘 要： | 通过将巯基乙酸作为一种支持电解质,将巯基固定在导电聚吡咯薄膜电极上,从而制得巯基—聚吡咯薄膜修饰电极,该修饰电极保持了巯基的螯合性能,并具有良好的稳定性。对水溶液中的重金属离子具有很好的吸附作用,其灵敏度与未修饰的玻碳电极相比,测汞离子时电沉积提高了3倍,化学吸附时提高了近5倍。并对其吸附机理进行了初步的探讨,证明了其对汞离子的吸附为不可逆的产物弱吸附。
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| 关 键 词： | 巯基 聚吡咯 化学修饰电极 |
The Preparation of Mercaptoacetic Acid-Polypyrrole Film Modified Electrode and Its Electrochemical Properties |
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| Zhou Yanxiu Zhu Guoyi Wang Erkang.The Preparation of Mercaptoacetic Acid-Polypyrrole Film Modified Electrode and Its Electrochemical Properties[J].Journal of Functional Polymers,1993,6(3):237-242. |
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| Authors: | Zhou Yanxiu Zhu Guoyi Wang Erkang |
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| Abstract: | This work shows that mercaptoacctic acid can be fixed on the conducting polypyrrole film electrode by one-step or two-step method. The mercaptoacetic acid-polypyrrole film chcmically modified electrode with surface unctionalization maintains the chelating property of mcrcapto compound, and has good stability and adsorbability for the adsorption on mercury, ions in acidic aqueous solution. The sensitivity of the modified electrode to determine mercury ions is about 3 times as that of nonmodification by electrodeposition, 5 times bY chemically adsorption. The electrochemical behaviur and adsorption mechanism of the modified electrode has been preliminarily studied. |
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| Keywords: | mercapto polypyrrole chemically modified electrode |
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