Nitrogen and Lanthanum Co-doped TiO2 with Enhanced Photocatalytic Activity

被引：1
|
作者：
Cong, Ye [1 ]
Qin, Peng [1 ]
Li, Xuanke [1 ]
Dong, Zhijun [1 ]
Yuan, Guanming [1 ]
机构：
[1] Wuhan Univ Sci & Technol, Hubei Coal Convers & New Carbon Mat Key Lab, Wuhan 430081, Hubei, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING, PTS 1-2 | 2011年 / 179-180卷
关键词：
Titanium dioxide; Co-doping; Photocatalytic activity; Mechanism; TITANIA; DEGRADATION; FLUID; PURE;
D O I：
10.4028/www.scientific.net/AMR.179-180.192
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nitrogen and lanthanum co-doped nanocsystalline titania photocatalysts were prepared by a homogeneous precipitation-hydrothermal process. The photocatalytic activity of the prepared samples on photodegradation of rhodamine B in visible light irradiation was studied. The nitrogen and lanthanum co-doping could greatly improve the photocatalytic activity of titania in visible light irradiation, probablely due to a synergistic effect of co-doping. The nitrogen doping could narrow the band gap of titania and enhance the utilization efficiency of visible light, while the lanthanum doping could accelerate the separation of photo-generated electrons and holes. Furthermore, the lanthanum doping could increase the adsorption of organic pollutants on the surface of photocatalyst.
引用
收藏
页码：192 / 196
页数：5
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