高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (8): 1459.

• 论文 • 上一篇    下一篇

空气电极改性TiO2光催化剂的研究

黄行九1,2, 叶刚1,2, 王连超1,2, 刘伟2, 蔡乃才3, 刘锦淮2   

  1. 1. 中国科学技术大学化学系, 合肥 230026;
    2. 中国科学院合肥智能机械研究所, 合肥 230031;
    3. 武汉大学化学与分子科学学院, 武汉 430072
  • 收稿日期:2002-09-17 出版日期:2003-08-24 发布日期:2003-08-24
  • 通讯作者: 刘锦淮(1957年出生),男,教授,从事半导体光敏与气敏材料研究.E-mail:jhliu@mail.iim.ac.cn E-mail:jhliu@mail.iim.ac.cn
  • 基金资助:

    国家自然科学基金(批准号:60274061)资助

A Study of TiO2Photo-catalyst Modified by Air Electrode

HUANG Xing-Jiu1,2, YE Gang1,2, WANG Lian-Chao1,2, LIU Wei2, CAI Nai-Cai3, LIU Jin-Huai2   

  1. 1. Department of Chemistry, University of Science and Technology of China, Hefei 230026, China;
    2. Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China;
    3. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China
  • Received:2002-09-17 Online:2003-08-24 Published:2003-08-24

PDF (PC)

摘要： 将TiO2/C光催化剂负载在具有合成H2O2性能的空气电极上形成双功能新型复合电极.TiO2/C光催化层的微多孔特性使新型载体保持了高效合成H2O2的优势,J=15mA/cm2时,电流效率达到82%.新型载体又为TiO2/C光催化剂获得了阳极偏压,有利于将光生电子迅速导入载体,减少了光生载流子的复合.在新型光催化体系中,光化学氧化作用与光催化氧化作用有机地统一在同一电极/溶液界面附近,造成了该界面的强氧化环境,从而使有机分子的氧化降解速度得到显著提高.

关键词: TiO2, 复合电极, 光催化, 偶氮染料分子TiO2

Abstract: Anovel composite electrode which has both of the functions of synthesizing H2O2and photocatalysis is reported.This double function composite electrode was prepared by loading the photocatalyst TiO2/Con a novel substrate which can synthesize H2O2The porous properties of TiO2/Cphotocatalysis layer can make the novel carrier synthsizing H2O2efficiently.The current efficiency attained a value of 82%(J=15mA/cm2), and the novel carrier made TiO2gaining an anodic bias which is very important for improving the photocatalytic activity of TiO2In this novel system, photochemistry and photocatalysis oxidization were combined near the interface of electrode/solution and thus the degradation rate of organic molecules enhanced rapidly.

Key words: TiO2, Composite electrode, Photocatalysis, Azo dye

中图分类号: 

TrendMD: