Effects of tourmaline on microstructures and photocatalytic activity of TiO2/SiO2 composite powders

被引：19

作者：

Meng Jun-ping ^{[1
]}

Liang Jin-sheng ^{[1
]}

Liang Guang-chuan ^{[1
]}

Yu Jun-mei ^{[1
]}

Pan Yan-fen ^{[1
]}

机构：

[1] Hebei Univ Technol, Inst Power Source & Ecomat Sci, Tianjin 300130, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2006年 / 16卷

关键词：

TiO2/SiO2; powders; composite materials; titania; photocatalytic activity; tourmaline;

D O I：

10.1016/S1003-6326(06)60254-9

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The SiO2/TiO2 composite powders including mineral tourmaline powders (T/SiO2/TiO2) were prepared from a sol made by a two-step hydrolysis method, using metasilicate ester as precursor. The powders were characterized by scanning electron microscopy (SEM). The photocatalytic activity of the sample was evaluated by the photocatalytic degradation of methyl orange. The effects of heat-treatment on the photocatalytic activity were discussed. It is found that the T/SiO2/TiO2 = composite powders show higher photocatalytic activity when including 10% SiO2 and 4% tourmaline. Moreover; the photocatalytic mechanism of tourmaline on the powders was proposed.

引用

页码：S547 / S550

页数：4

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