高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (10): 1641.

• 研究论文 • 上一篇    下一篇

锰取代Keggin型杂多酸[ZnW11O39Mn(H2O)]8-在化学修饰玻碳电极上的多层组装及电催化性能研究

刘建允, 程龙, 董绍俊   

  1. 长春应用化学研究所电分析开放实验室, 长春 130022
  • 收稿日期:2000-09-19 出版日期:2001-10-24 发布日期:2001-10-24
  • 通讯作者: 董绍俊(1931年出生),女,研究员,博士生导师,第三世界科学院院士,主要从事化学修饰电极、生物传感器、光谱电化学及电分析化学研究.
  • 基金资助:

    国家自然科学基金(批准号:29835120;29875028)资助

Multilayer Assembly of Mn-substituted Keggin-type [ZnW11O39 Mn(H2O)]8- on Chemically Modified Glassy Carbon Electrode and Its Electrocatalytic Properties

LIU Jian-Yun, CHENG Long, DONG Shao-Jun   

  1. Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  • Received:2000-09-19 Online:2001-10-24 Published:2001-10-24

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摘要： 在4-氨基苯甲酸修饰的玻碳电极上制备了过渡金属取代杂多酸[ZnW11O39Mn(H2O)]8-(ZnW11Mn)多层膜.各层的循环伏安行为证明膜的增长均匀,峰电流随层数的增加而增加.与其在溶液中的氧化还原行为相比,多层膜中的ZnW11Mn显示出一些特殊的性质.还讨论了pH对其氧化还原行为的影响.该多层膜对BrO3-和H2O2的还原及抗坏血酸的氧化具有较好的电催化性能.

关键词: 过渡金属取代杂多酸[ZnW11O39Mn(H2O)]8-, 多层组装, 电催化

Abstract: Through layer by layer assembly, undecatungstozincates monosubstituted by transition metals Mn, ZnW11 Mn(H2O)O398- was successfully immobilized on a glassy carbon electrode surface grafted covalently by 4 aminobenzoic acid. The electrochemical behavior of these polyoxometalates was investigated. Cyclic voltammetry proves the uniform growth of the film. They exhibit some special electrochemical properties in the films, different from those in homogeneous aqueous solution. The effect of pHon the redox behavior of ZnW11 Mn(H2O)O8- 39 in the film was discussed in detail. The multilayer film electrodes have an excellent electrocatalytic response to the reduction of H2O2 and BrO3-, and to the oxidation of ascorbic acid.

Key words: Transition metal substituted polyoxometalates ZnW11 Mn(H2O)O398-, Multilayer assembly, Electrocatalysis

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