Photoelectrocatalytic degradation of organic contaminants at Bi2O3/TiO2 nanotube array electrode

被引：68

作者：

Zhao, Xu ^{[1
]}

Liu, Huijuan ^{[1
]}

Qu, Jiuhui ^{[1
]}

机构：

[1] Chinese Acad Sci, State Key Lab Environm Aquat Chem, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 10期

基金：

中国国家自然科学基金;

关键词：

TiO2 nanotube array; Bi2O3; Photoelectrocatalysis; Visible light; Photocatalyst; PHOTOCATALYTIC ACTIVITY;

D O I：

10.1016/j.apsusc.2010.12.099

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In the current work, TiO2 nanotube array was prepared via electrochemical anode method. Then the Bi2O3 nanoparticles were deposited onto the TiO2 nanotube array via dip-coating method from an amorphous complex precursor. The crystal structures were characterized via X-ray diffraction analysis. Their surface textures were observed via electron-scanning microscope. The prepared composite array electrode exhibited high photoelectrocatalytic activities towards degrading organic contaminants under visible light irradiation. High photoelectrocatalytic activities were also exhibited under UV light irradiation. The catalytic mechanism was discussed based on the analysis of electrochemical and degradation kinetics results. It is suggested a P (Bi2O3)-N (TiO2) junction was formed to increase the catalytic activates. The stability of the electrode materials was confirmed finally. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：4621 / 4624

页数：4

共 12 条

[1] Visible-light responsive C,N-codoped Titania hollow spheres for X-3B dye photodegradation [J].