Effect of carbon and oxygen on phase transformation of titania films during annealing

被引：36

作者：

Chou, Po-Wen ^{[1
]}

Wang, Yu-Shiuan ^{[1
]}

Lin, Chun-Chu ^{[1
]}

Chen, Yi-Jia ^{[1
]}

Cheng, Chia-Liang ^{[2
]}

Wong, Ming-Show ^{[1
]}

机构：

[1] Natl Dong Hwa Univ, Dept Mat Sci & Engn, Hualien 974, Taiwan

[2] Natl Dong Hwa Univ, Dept Phys, Hualien 974, Taiwan

来源：

SURFACE & COATINGS TECHNOLOGY | 2009年 / 204卷 / 6-7期

关键词：

Titanium dioxide; Carbon-doped titania; Anatase; Rutile; Phase transformation; ANATASE-TO-RUTILE; LIGHT IRRADIATION; TIO2; DIOXIDE; WATER; PHOTOCATALYSIS; POWDERS;

D O I：

10.1016/j.surfcoat.2009.08.008

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Pure and carbon-doped amorphous titania films were prepared in an argon-oxygen plasma by reactive sputtering of a titanium metal target and co-sputtering of a Ti and a graphite target, respectively. The as-deposited films were subsequently annealed in vacuum and in air. The influence of the annealing atmosphere and temperature on the composition, phase transformation and crystallinity of the films was systematically studied. The results indicate that carbon incorporated in titania and an oxygen deficient environment both facilitate the formation of oxygen vacancies in titania which favors the phase transformation to ruitile during annealing at low temperatures. A mechanism is proposed to explain why carbon incorporation and oxygen defects in titania favors the formation of rutile during annealing. (C) 2009 Published by Elsevier B.V.

引用

页码：834 / 839

页数：6

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