Ti3+ self-doping in bulk of rutile TiO2 for enhanced photocatalysis

被引：38
作者：
Wang, Guojing [1 ,2 ]
Zheng, Jun [3 ]
Bi, Hong [4 ]
Wang, Shuting [1 ]
Wang, Jin [1 ]
Sun, Jie [1 ]
Guo, Yufeng [1 ]
Wang, Chunchang [1 ]
机构：
[1] Anhui Univ, Sch Phys & Mat Sci, Lab Dielect Funct Mat, Hefei 230601, Anhui, Peoples R China
[2] Southwest Univ, Fac Mat & Energy, Chongqing 404100, Peoples R China
[3] Anhui Univ, Ctr Modern Expt Technol, Hefei 230601, Anhui, Peoples R China
[4] Anhui Univ, Coll Chem & Chem Engn, Hefei 230601, Anhui, Peoples R China
来源：
SCRIPTA MATERIALIA | 2019年 / 162卷
基金：
中国国家自然科学基金;
关键词：
Ceramics; Ti3+ self-doping; Catalysis; Defects; DOPED TIO2; NANOWIRE ARRAYS; ABSORPTION; NITROGEN; TITANIA; NANOPARTICLES; NANOCRYSTALS; WATER;
D O I：
10.1016/j.scriptamat.2018.10.025
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A facile method, by sintering commercially available TiO2 in inert gas at high temperature, was used to obtain Ti3+ self-doping blue rutile TiO2 ceramic powder. Our results indicate that Ti3+ ions exist in bulk of TiO2 and the reduced TiO2 exhibits enhanced visible-light absorption. The reduced TiO2 possesses superior photocatalytic ability in photodegradation of methylene blue under Xe light illumination. Moreover, the reduced TiO2 exhibits good stability even after 12 months. This method provides an economical and universally applicable way to synthesize commercially available TiO2 powder with high and stable photocatalytic performance, which may have the promise for solar applications. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：28 / 32
页数：5
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