Photocatalytic activity of metal ion (Fe or W) doped titania

被引：16
|
作者：
Lee, SS [1 ]
Kim, HJ [1 ]
Jung, KT [1 ]
Kim, HS [1 ]
Shul, YG [1 ]
机构：
[1] Yonsei Univ, Dept Chem Engn, Seoul 120749, South Korea
来源：
KOREAN JOURNAL OF CHEMICAL ENGINEERING | 2001年 / 18卷 / 06期
关键词：
photocatalysis; photocatalyst; TiO2; metal-doped TiO2;
D O I：
10.1007/BF02705618
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Iron or tungsten-doped nano TiO2 were successfully synthesized from TiCl4. All of the samples showed anatase phase of TiO2. For the iron-doped TiO2, Iron ion was well dispersed in the TiO2 lattice. However, tungsten-doped TiO2 formed 12-tungstate with anatase TiO2. As the concentration of tungsten increased, 12-tungstate disappeared. The photocatalytic oxidation of acetaldehyde was evaluated to examine the photocatalytic characteristics of metal-doped TiO2. Because of the surface containing metal oxide or metal precursors at high concentration metal ion, increasing the concentration of W or Fe ion decreased the reactivity. The reaction rate was drastically increased after 300 degreesC heat treatment. Furthermore, the photocatalytic activity of iron- or tungsten-doped TiO2 was higher than that of synthesized pure TiO2 and commercial TiO2.
引用
收藏
页码：914 / 918
页数：5
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