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

页码：914 / 918

页数：5