物理化学学报 >> 2001, Vol. 17 >> Issue (07): 609-613.doi: 10.3866/PKU.WHXB20010707

研究论文 上一篇    下一篇

苯胺在SnO2/Ti电极上的电化学氧化

王玉玲;蔡乃才;霍耀东;陈浩   

  1. 武汉大学 化学与环境科学学院, 武汉 430072
  • 收稿日期:2000-11-27 修回日期:2001-03-12 发布日期:2001-07-15
  • 通讯作者: 蔡乃才 E-mail:nccai@whu.edu.cn

Electrochemical Oxidation for the Degradation of Aniline on the SnO2/Ti Anode

Wang Yu-Ling;Cai Nai-Cai;Huo Yao-Dong;Chen Hao   

  1. College of Chemistry and Environment Science,Wuhan University,Wuhan 430072
  • Received:2000-11-27 Revised:2001-03-12 Published:2001-07-15
  • Contact: Cai Nai-Cai E-mail:nccai@whu.edu.cn

摘要: 研究了以SnO2/Ti为阳极降解苯胺的电化学降解特性.实验结果表明,同Pt电极比较,掺 F的SnO2/Ti电极对苯胺的降解表现了明显的效果.苯胺在SnO2/Ti电极上氧化降解速率主要决 定于其中间产物的阳极溶解行为.由中间产物构成的有机膜的阳极溶解是反应的慢步骤.研究 了苯胺溶液的浓度、pH和电流密度对苯胺降解速率的影响规律,对反应中间产物的复杂性及 构成“膜”的理化性质进行了初步分析.

关键词: 电化学降解, 苯胺, SnO2/Ti, 电催化

Abstract: The characteristic of electrochemical degradation of aniline on SnO2/T i anode have been studied.The results indicate that SnO2/Ti anode doped with F plays an obvious role of electrocatalysis on the degradation of aniline differen t from that on Pt anode.The kinetics factors that influent the oxidation rates o f aniline on SnO2/Ti anode are determined by the dissolving of intermediate prod ucts on anodes.The dissolving of the organic film with intermediate products on the anode is the rate determining step.The effects of aniline concentration,pH o f aniline solution and the current density on the rate of aniline degradation ha s been studied.Under the best condition,the most efficient rate of elimination o f aniline(99.1%) and current efficiency (99.8%) could be achieved.The complexi ty of the intermediate products,the basic category of the intermediate products consiste of the black film have been analyzed.

Key words: Electrochemical degradation, Aniline, SnO2/Ti,  Electrocatalysis