Diameter-controlled growth of TiO2 nanotube arrays by anodization and its photoelectric property

被引:41
作者
Yang, Han [1 ,2 ]
Pan, Chunxu [1 ,2 ,3 ]
机构
[1] Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China
[2] Wuhan Univ, Minist Educ, Key Lab Acoust & Photon Mat & Devices, Wuhan 430072, Peoples R China
[3] Wuhan Univ, Ctr Electron Microscopy, Wuhan 430072, Peoples R China
关键词
Titania; Nanotube arrays; Anodization; Diameter controlling; Photoelectric; TITANIA NANOTUBES; ANODIC-OXIDATION; ELECTROLYTES; FABRICATION; FILMS;
D O I
10.1016/j.jallcom.2009.11.112
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
This work describes the diameter-controlled growth of the TiO2 nanotube arrays by anodization of Ti foils in the ethylene glycol/HF electrolytes with variant fluoride concentration under a constant applied voltage (30 V). The results reveal synthesis of TiO2 arrays of nanotubes with diameters ranging from 20 to 41 nm when fluoride concentration varied from 0.1 to 0.5 M in the electrolytes. The influence of the fluoride concentration on the diameter and the wall thickness of the TiO2 nanotubes was discussed. The photocurrent response experiments indicate that the TiO2 arrays of nanotubes with diameter of 20 nm had the superior photoelectric property. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:L33 / L35
页数:3
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