高等学校化学学报

高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (6): 1151.

• 研究论文 • 上一篇    下一篇

新型双功能复合电极的制备及其加速水中有机污染物降解作用的研究

王玉玲, 蔡乃才, 王亚平, 李进, 钟家圣   

  1. 武汉大学化学与分子科学学院, 武汉 430072
  • 收稿日期:2001-06-12 出版日期:2002-06-24 发布日期:2002-06-24
  • 通讯作者: 蔡乃才(1946年出生),男,副教授,主要从事光电化学催化与电化学催化研究.E-mail:nccai@whu.edu.cn E-mail:nccai@whu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:20071026)资助

Preparation of the Novel Double-functional Composite Electrode and Its Role on the Degradation of Organic Pollutants in Water

WANG Yu-Ling, CAI Nai-Cai, WANG Ya-Ping, LI Jin, ZHONG Jia-Sheng   

  1. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China
  • Received:2001-06-12 Online:2002-06-24 Published:2002-06-24

PDF (PC)

被引次数

26

摘要： 介绍了新型复合电极的制备方法、其双功能特性以及在提高水中有机污染物(如苯胺)降解速度所起的作用,并对其作用机制进行了讨论.实验结果表明,由空气电极和TiO2光催化剂组成的复合电极,当其工作电位控制在0.05V(vs.SCE)左右时,既具有良好的光电效应,又具有以较高效率合成H2O2的特性,使溶液中的有机分子获得来自光催化氧化与光化学氧化两方面的联合降解作用,从而显著地提高了有机分子的氧化降解速度.

关键词: 复合电极, 空气电极, TiO2光催化剂, 降解, 苯胺

Abstract: The methods for preparing the novel composite electrode, the double function of the novel composite electrode and the role of it on increasing the degradation rate of the organic pollutants(such as aniline) in water are introduced. The reaction mechanism is also discussed. The results indicate that when the working potential was controlled at 0.05 Vor so, the composite electrode made up of the carbon PTFE(air) O2 electrode and the TiO2 photo catalyst not only possesses photocurrent effect but also has a high efficiency of generating H2O2. Then the organic molecule in solution can obtain two kinds of roles on degradation coming from the combination of the photo-catalysis and the photochemical oxidation. The rate of degradation of the organic molecule is obviously enhanced.

Key words: Composite electrode, Carbon PTFE(air) O2 electrode, TiO2 photo-catalyst, Degradation, Aniline

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