应用化学 ›› 1993, Vol. 0 ›› Issue (4): 64-66.

• 研究简报 • 上一篇    下一篇

中性红/蒙脱石/SnO2化学修饰电极制备及电化学性能

沈报恩, 王华伟, 彭图治, 王国顺   

  1. 杭州大学化学系 310028 杭州
  • 收稿日期:1992-07-20 修回日期:1992-11-23 出版日期:1993-08-10 发布日期:1993-08-10
  • 基金资助:
    中国科学院长春应用化学研究所电分析化学开放实验室资助项目

PREPARATION AND ELECTROCHEMICAL PROPERTIES OF NEUTRAL RED/MONTMORILLONITE/SnO2 CME

Shen Baoen, Wang Huawei, Peng Tuzhi, Wang Guoshun   

  1. Department of Chemistry, Hangzhou Uniersity, 310028 Hangzhou
  • Received:1992-07-20 Revised:1992-11-23 Published:1993-08-10 Online:1993-08-10

摘要: 蒙脱石有很好的层状结构、大的表面积和优良的吸附性,与其它修饰材料(如Nafion)相比有较高的热稳定性和化学稳定性。是可以利用的廉价材料。用它制成的化学修饰电极(CME)已用于电催化、电有机合成等。 本文报道中性红(NR)/蒙脱石/SnO2 CME的制备及其电化学性能。实验结果表明,用蒙脱石作修饰层材料,对电活性物质有很好的富集作用,制得的CME有较好的稳定性。虽然电活性物在蒙脱石膜界面的扩散系数较小,但由于在膜内有较高的浓度,因而制得的CME比空白SnO2电极有较高的电化学响应。

关键词: 蒙脱石, 二氧化锡, 中性红, 化学修饰电极, 制备, 性能

Abstract: The neutral red/montmorillonite/SnO2 chemical modified electrode prepared had a higher electroactivity and stability. In comparison with the bare SnO2 electrode, the diffusion coefficients of neutral red determined by thin-layer spectroelectrochemical methods in the interface of the montmorillonite film were reduced by four order of magnitude, but the peak currents in cyclic voltammograms were increased.

Key words: montmorillonite, tin dioxide, neutral red, chemical modified electrode, preparation, property