BaTiO3/TiO2 heterostructure nanotube arrays for improved photoelectrochemical and photocatalytic activity

被引：84

作者：

Li, Rui ^{[1
]}

Li, Qiuye ^{[1
]}

Zong, Lanlan ^{[1
]}

Wang, Xiaodong ^{[1
]}

Yang, Jianjun ^{[1
]}

机构：

[1] Henan Univ, Key Lab Special Funct Mat, Kaifeng 475004, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2013年 / 91卷

基金：

中国国家自然科学基金;

关键词：

TiO2 nanotube array; BaTiO3/TiO2; heterojuction; Photoelectrochemistry; Photocatalysis; BICOMPONENT WO3/TIO2 FILMS; PHOTOCHEMICAL REACTIVITY; TITANIA NANOTUBES; WO3; ELECTRODES; TIO2; DEGRADATION; FABRICATION; OXIDATION; DYES;

D O I：

10.1016/j.electacta.2012.12.073

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

BaTiO3/TiO2 heterostructure nanotube arrays were fabricated by in situ hydrothermal method using TiO2 nanotubes as both template and reactant. The BaTiO3/TiO2 heterostructures were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) techniques. Compared with pure TiO2 nanotube arrays, the BaTiO3/TiO2 heterostructures exhibited enhanced photocurrent under UV light irradiation. The electrochemical impedance spectra (EIS) showed that the impedance arc radius of BaTiO3/TiO2 heterostructures was much smaller, indicating an improved charge carrier separation ability was achieved. In addition, the BaTiO3/TiO2 heterostructure nanotube arrays displayed a higher photocatalytic activity for methylene blue degradation. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：30 / 35

页数：6

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