期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 76, 期 3-4, 页码 328-334出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2007.06.001
关键词
titanium dioxide; carbon-doped titania; carbon-covered titania; visible-light photocatalyst; photodegradation; superhydrophilicity
Carbon-doped or carbon-covered titania. can enhance photocatalytic performance under visible light. Here we report the first instance of synergistic effect of the carbon incorporation in anatase titania (TiO2-xCx:C)films with both substitutional doping and surface covered characteristics, by reactively co-sputtering Ti metal and graphite targets. The nature of incorporated carbon is characterized by Raman spectroscopy, X-ray photoelectron spectroscopy and transmission electron microscopy. The absorption edge of the carbon incorporated titania thin films shifted from ultraviolet to visible region and directly depended on the carbon content. The photocatalytic performance, e.g., photodegradation of methylene blue (MB), photo-reduction of silver-ions and super hydrophilicity, was greatly enhanced with increasing carbon content. The best photocatalytic activity is obtained in the TiO2-xCx:C film of the most carbon concentration about 9.3 at.% with a degradation rate-constant of 0.108 h(-1) for MB under visible-light illumination. (C) 2007 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据