高等学校化学学报

高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (10): 1969.

• 研究论文 • 上一篇    下一篇

降解水中有机毒物的新型反应体系研究

王玉玲, 蔡乃才, 张怀松, 龙飞   

  1. 武汉大学化学与分子科学学院, 武汉 430072
  • 收稿日期:2001-06-07 出版日期:2002-10-24 发布日期:2002-10-24
  • 通讯作者: 蔡乃才(1945年出生),男,副教授,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:200710026)资助

A Novel Reaction System to Degradation of Organic Toxicants in Water

WANG Yu-Ling, CAI Nai-Cai, ZHANG Huai-Song, LONG Fei   

  1. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China
  • Received:2001-06-07 Online:2002-10-24 Published:2002-10-24

PDF (PC)

被引次数

30

摘要： 利用空气中的氧电化学合成H2O2,制备具有较高电流效率的空气电极.将空气电极用于构成降解有机毒物的新型反应体系电化学氧化体系、光激发氧化剂氧化体系和光电-Fenton氧化体系.实验测量了H2O2在不同体系不同条件下的分解速率,并与相应的传统式体系作了比较.实验测量了苯胺在新型体系中的矿化反应速率,发现H2O2的分解速率与苯胺的矿化速率有良好的平行关系,其中H2O2分解速率最快的光电-Fenton体系是氧化降解有机分子的最佳体系.通过光电-Fenton体系和光-Fenton体系的比较,揭示了空气电极/溶液界面在光电-Fenton体系中所起的重要作用.初步讨论了苯胺分子在光电-Fenton体系中矿化反应的机制.

关键词: 光电-Fenton, 有机毒物降解, 苯胺

Abstract: The carbon-PTFE O2(air)-Fed cathode with a high current efficiency was prepared on which H2O2 was electro-generated by using O2 in air. It was used to degrade the organic toxic contaminants in the new type reaction system-electrochemical oxidation system, photo-excitation oxidant system and the photoelectro-Fenton system. The decomposition rate of H2O2 was measured in different systems under different conditions and was compared with the traditional system. The reaction rate of aniline to mineral was measured in the new type systems, and the results indicated the decomposition rate of H2O2 has an excellent parallel relation with the degradation rate of aniline, when the carbon-PTFE O2 (air)-Fed worked in suit successively. Besides, the best system to degrade the organic molecule was the photoelectro-Fenton system, in which H2O2 was decomposed fastest. By comparing with photoelectro-Fenton system and photo-Fenton system, it reveals the important role of interface between the carbon-PTFE O2(air)-Fed cathode and solution in photoelectro-Fenton system. In this paper, we also discuss the mechanism of aniline to mineral in photoelectro-Fenton system.

Key words: Photo electro-Fenton, Degradation of the organic toxic contaminants, Aniline

中图分类号: 

TrendMD: