Improved photocatalytic activity of highly ordered TiO2 nanowire arrays for methylene blue degradation

被引：17

作者：

Lv, Xiaojun ^{[1
,2
]}

Zhang, Hao ^{[3
]}

Chang, Haixin ^{[3
]}

机构：

[1] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, HKU CAS Joint Lab New Mat, Beijing 100190, Peoples R China

[3] Tohoku Univ, WPI Adv Inst Mat Res, Sendai, Miyagi 9808578, Japan

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2012年 / 136卷 / 2-3期

基金：

中国国家自然科学基金;

关键词：

TiO2; nanowires; High photocatalytic activity; Photodegradation; Nitrogen doping; Photocurrent response; SENSITIZED SOLAR-CELLS; DOPED TIO2; THIN-FILMS; OPTICAL-PROPERTIES; NANOTUBE ARRAYS; FABRICATION; DENSE;

D O I：

10.1016/j.matchemphys.2012.07.059

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Although many efforts have been done on the photocatalytic properties of anodic TiO2 nanotubes, much less work is done on the photocatalytic performance of TiO2 nanowires. Self-organized anodic TiO2 nanowire arrays have been fabricated using a simple electrochemical approach and used as photocatalysts in photodegradation of methylene blue (MB) dyes. Here we found for the first time TiO2 nanowires have better photocatalytic properties and incident photon-to-current efficiency (IPCE) than TiO2 nanotubes. N doped TiO2 nanowires showed further enhancement in photodegradation activity and photocurrent response in the visible region. Such TiO2 nanowires are expected to have great potential in photodegradation of pollutants, photovoltaic solar energy conversion and water splitting for hydrogen generation as well. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：789 / 795

页数：7

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