Effects of heat treatment scheme on the photocatalytic activity of TiO2 nanotube powders derived by a facile electrochemical process

被引：31

作者：

Liao, Yulong ^{[1
]}

Que, Wenxiu ^{[1
]}

Tang, Zhenhua ^{[1
]}

Wang, Wenjuan ^{[1
]}

Zhao, Wenhan ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Elect Mat Res Lab, Sch Elect & Informat Engn, Xian 710049, Shaanxi, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 03期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

TiO2; nanotube; Heat treatment; Phase structure; Photocatalytic activity; TITANIA; DEGRADATION; FABRICATION;

D O I：

10.1016/j.jallcom.2010.09.175

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：

TiO2 nanotubes (NTs) in powder form were synthesized by a facile electrochemical process in a perchlorate-containing electrolyte. Transmission electron microscopy results indicate that the TiO2 NT-powder is in an amorphous structure and has outer diameter of 20 nm and tube-wall thickness of 5 nm. X-ray diffraction analysis reveals that phase composition of the annealed TiO2 NT-powders is related to the heat treatment scheme. Methyl orange was employed as a representative dye pollutant to evaluate the ultraviolet photocatalytic activity of the TiO2 NT-powders. It was found that different post heat treatment schemes affect greatly the photocatalytic activities of the TiO2 NT-powders, which should be ascribed to the changes in phase structural and morphological properties of the TiO2 NT-powders. These results indicate that there should be a balance between crystal phase and nanotubular configuration for achieving the best photocatalytic activity of the TiO2 nanotube powders. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1054 / 1059

页数：6

共 30 条

[1] Heat treatment effects on the characteristics and sonocatalytic performance of TiO2 in the degradation of organic dyes in aqueous solution [J].

Abdullah, Ahmad Zuhairi ;

Ling, Pang Yean .

JOURNAL OF HAZARDOUS MATERIALS, 2010, 173 (1-3) :159-167

[2] Effect of Rapid Infrared Annealing on the Photoelectrochemical Properties of Anodically Fabricated TiO2 Nanotube Arrays [J].

Allam, Nageh K. ;

Grimes, Craig A. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (19) :7996-7999

[3] Photoactivity of anatase-rutile TiO2 nanocrystalline mixtures obtained by heat treatment of homogeneously precipitated anatase [J].

Bakardjieva, S ;

Subrt, J ;

Stengl, V ;

Dianez, MJ ;

Sayagues, MJ .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2005, 58 (3-4) :193-202

[4] Transparent TiO2 Nanotube Electrodes via Thin Layer Anodization: Fabrication and Use in Electrochromic Devices [J].

Berger, S. ;

Ghicov, A. ;

Nah, Y. -C. ;

Schmuki, P. .

LANGMUIR, 2009, 25 (09) :4841-4844

[5]

BRAVO A, 1993, J CHEM RES-S, P376

[6] Preparation of a novel TiO2-based p-n junction nanotube photocatalyst [J].

Chen, YS ;

Crittenden, JC ;

Hackney, S ;

Sutter, L ;

Hand, DW .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2005, 39 (05) :1201-1208

[7] A Novel Method for Synthesis of Titania Nanotube Powders using Rapid Breakdown Anodization [J].

Fahim, Narges F. ;

Sekino, Tohru .

CHEMISTRY OF MATERIALS, 2009, 21 (09) :1967-1979

[8] Rapid anodic growth of TiO2 and WO3 nanotubes in fluoride free electrolytes [J].

Hahn, R. ;

Macak, J. M. ;

Schmuki, P. .

ELECTROCHEMISTRY COMMUNICATIONS, 2007, 9 (05) :947-952

[9] ENVIRONMENTAL APPLICATIONS OF SEMICONDUCTOR PHOTOCATALYSIS [J].

HOFFMANN, MR ;

MARTIN, ST ;

CHOI, WY ;

BAHNEMANN, DW .

CHEMICAL REVIEWS, 1995, 95 (01) :69-96

[10]

Ingle James D., 1988, Spectrochemical analysis

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