Significant enhancement of the photoelectrochemical activity of TiO2 nanotubes

被引：17
|
作者：
Tian, Min [1 ]
Thind, Sapanbir S. [1 ]
Chen, Shuai [1 ]
Matyasovzsky, Nelson [1 ]
Chen, Aicheng [1 ]
机构：
[1] Lakehead Univ, Dept Chem, Thunder Bay, ON P7B 5E1, Canada
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2011年 / 13卷 / 11期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Photoelectrochemistry; Catalysis; TiO2; nanotubes; UV pre-treatment; WATER; ARRAYS; DEGRADATION; FILMS; SIZE;
D O I：
10.1016/j.elecom.2011.08.048
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In the present work, we report on a facile and effective approach to significantly enhance the photocatalytic activity of TiO2 nanotubes. The TiO2 nanotubes prepared by the electrochemical oxidation of titanium in dimethyl sulfoxide (DMSO) with 2% HF were treated in a methanol solution under UV light irradiation. In comparison with the untreated TiO2 nanotubes, the treatment resulted in a dramatic increase in the donor density of the TiO2 nanotubes by approximately 3 orders of magnitude. The treated TiO2 nanotubes exhibited a 15-fold enhancement in photocurrent and a 6.8-fold increase in the photoelectrochemical degradation of 4-nitrophenol, significant for hydrogen generation and wastewater treatment. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1186 / 1189
页数：4
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