Effect of C doping on the structural and optical properties of sol-gel TiO2 thin films

被引：54
作者：
Mai, Lixiang [1 ]
Huang, Chunming [2 ]
Wang, Dawei [1 ]
Zhang, Zhiguang [1 ]
Wang, Yinyue [2 ]
机构：
[1] Sun Yat Sen Univ, Guanghua Coll Stomatol, Inst Stomatol, Guangzhou 510055, Guangdong, Peoples R China
[2] Lanzhou Univ, Dept Phys, Lanzhou 730000, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2009年 / 255卷 / 22期
关键词：
Crystal structure; Optical properties; Sol-gel process; Thin films; Titanium dioxide; LIGHT PHOTOCATALYTIC ACTIVITY; VISIBLE-LIGHT; PHASE-TRANSFORMATION; DOPED TIO2; TITANIUM-DIOXIDE; ANATASE; CARBON; WATER; DEGRADATION; TEMPERATURE;
D O I：
10.1016/j.apsusc.2009.07.027
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：
Undoped and C-doped TiO2 thin films have been prepared by sol-gel process. Their structure and optical properties have been investigated by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV-vis spectroscopy. It has been observed that C dopants retard the transformation from anatase-to-rutile phase. Namely, C doping effect is attributed to the anatase phase stabilization. The optical analyses show that the optical band gap of anatase C-doped TiO2 decreases with increasing amount of C. Also, it is founded that C dopants have been shown to make TiO2 have a visible light photoresponse. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：9285 / 9289
页数：5
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