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

页码：1186 / 1189

页数：4

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