Preparation and photocatalytic performance of anatase-mounted natural porous silica, pumice, by hydrolysis under hydrothermal conditions

被引：88

作者：

Chuan, XY ^{[1
]}

Hirano, M

Inagaki, M

机构：

[1] Aichi Inst Technol, Fac Engn, Toyota 4700392, Japan

[2] Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2004年 / 51卷 / 04期

基金：

中国国家自然科学基金;

关键词：

photocatalyst; anatase; porous silica; pumice; hydrothermal treatment;

D O I：

10.1016/j.apcatb.2004.03.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A natural porous silica, pumice, was used as a substrate for photocatalytic TiO(2). Mounting of anatase-typeTiO(2) was successfully performed through hydrolysis of TiOSO(4) under hydrothermal conditions. Anatase-mounted pumice particles thus prepared were floating and rotating on the surface of water with stirring. Adsorption and photocatalytic performances were examined in methylene blue aqueous solution in the dark and under ultraviolet ray irradiation, respectively. Methylene blue in water could be decomposed rapidly by anatase-mounted on pumice particles. Their photoactivity was evaluated by subtracting adsorbed amount of methylene blue. High efficiency of usage of UV rays for photodecomposition of organic pollutants in water was expected. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：255 / 260

页数：6

共 18 条

[1] Photocatalytic decomposition of oil in water [J].