物理化学学报2012，Vol.28Issue(9)：2169-2174,6.DOI:10.3866/PKU.WHXB201207041
浸渍-分解法制备高可见光催化活性的Bi2O3/TiO2纳米管阵列
Fabrication of Bi2O3/TiO2 Nanotube Arrays with High Visible-Light Photocatalytic Activity by Impregnation-Decomposition Method
摘要
Abstract
Bi2O3/TiO2 nanotube arrays (NTs) were prepared by depositing Bi2O3 nanoparticles (NPs) onto the tube wall of self-organized TiO2 NTs using an impregnation-decomposition method.Chemical composition of the resulting Bi2O3/TiO2 NTs was determined by inductively coupled plasma atomic emission spectrometry (ICP-AES).The prepared samples were characterized by X-ray diffraction (XRD),scanning electron microscopy (SEM),transmission electron microscopy (TEM),and UV-visible (UV-Vis) diffuse reflectance spectroscopy.Photocatalytic activity was evaluated by degradation of aqueous methyl orange (MO) solution under visible-light irradiation (λ＞400 nm).The Bi2O3 nanoparticles were found to be uniformly deposited into the nanotubes.Bi2O3/TiO2 NTs exhibited much higher visible-light activity than pure Bi2O3 films and N-TiO2 NTs,which was attributed to synergistic effects of the strong visible-light absorption of Bi2O3/TiO2 NTs and the heterojunction formed between Bi2O3 and TiO2.关键词
Bi2O3/TiO2纳米管阵列/可见光/光催化/异质结/协同作用Key words
Bi2O3/TiO2 nanotube array/ Visible light/ Photocatalysis/ Heterojunction/Synergetic effect分类
化学化工引用本文复制引用
戴高鹏,刘素芹,彭荣,罗天雄..浸渍-分解法制备高可见光催化活性的Bi2O3/TiO2纳米管阵列[J].物理化学学报,2012,28(9):2169-2174,6.基金项目
湖北省教育厅项目(T201215,Q20122507)资助 （T201215,Q20122507）
The proiect was supported by the Research Program of Hubei Province Department of Education,China (T201215,Q20122507). （T201215,Q20122507）
