Hydrothermal synthesis and evaluation of-visible-light-active photocatalyst of (N, F)-codoped anatase TiO2 from an F-containing titanium chemical

被引：6
|
作者：
Yamada, Tomoaki [1 ]
Gao, Yanfeng [2 ]
Nagai, Masayuki [1 ]
机构：
[1] Musashi Inst Technol, Setagaya Ku, Tokyo 1588557, Japan
[2] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
来源：
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2008年 / 116卷 / 1353期
关键词：
photocatalysis; titanium dioxide; ion doping; hydrothermal treatment; low temperature; visible light activity;
D O I：
10.2109/jcersj2.116.614
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A visible light active TiO2 photocatalyst was synthesized hydrothermally from an aqueous solution containing (NH4)TiW6 and NH3 at 140 or 160 degrees C. The prepared samples were characterized with X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), and UV-Vis diffuse reflectance spectroscopy. The prepared samples showed obvious absorption in the wavelength range of 400-550 nm with a red shift in the adsorption edge. It was found that the prepared samples exhibited photocatalytic activity on degradation of methylene blue (MB) in water under visible light. The ion-doped TiO2 obtained by hydrothermal treatment at 160 degrees C for 7 d had the highest photocatalytic activity. The formation of Ti-N and Ti-F bonds was confirmed by X-ray photoelectron spectroscopy (XPS). (C) 2008 The Ceramic Society of Japan. All rights reserved.
引用
收藏
页码：614 / 618
页数：5
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