Synthesis and photocatalytic activity of mesoporous SiO2-TiO2

被引：7
作者：
Inada, Miki [1 ]
Enomoto, Naoya [1 ]
Hojo, Junichi [1 ]
机构：
[1] Kyushu Univ, Dept Appl Chem, Fac Engn, Nishi Ku, Fukuoka 8190395, Japan
来源：
RESEARCH ON CHEMICAL INTERMEDIATES | 2010年 / 36卷 / 01期
关键词：
Mesoporous silica; Titania; Spherical particle; Sol-gel; Photocatalyst; SILICATE MCM-41; TITANIA;
D O I：
10.1007/s11164-010-0120-y
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Mesoporous SiO2-TiO2 was synthesized by the sol-gel method using Si(OC2H5)(4), Ti(OC2H5)(4), and stearyltrimethylammonium chloride. By using acetylacetone as the capping agent of Ti(OC2H5)(4), homogeneous SiO2-TiO2 composite was obtained. Spherical mesoporous SiO2-TiO2 was also synthesized by the sol-gel method using W/O emulsion under microwave irradiation. The specific surface area of these mesoporous SiO2-TiO2 materials decreased when the Ti/Si molar ratio was higher than 0.1, which indicated that Ti was homogeneously distributed in mesoporous SiO2 matrix at Ti/Si a parts per thousand broken vertical bar 0.1. The photocatalytic activity of mesoporous SiO2-TiO2 materials was investigated by the degradation of methylene-blue in water under UV light irradiation. Mesoporous SiO2-TiO2 was effective for the adsorption-decomposition of methylene-blue.
引用
收藏
页码：115 / 120
页数：6
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