Study on the preparation of ultrafine mesoporous TiO2 with controllable crystalline phase and its photocatalytic activities

被引：32

作者：

Ou, Yan ^{[1
]}

Lin, Jingdong ^{[1
]}

Fang, Shumei ^{[1
]}

Liao, Daiwei ^{[1
]}

机构：

[1] Xiamen Univ, Dept Chem, Inst Phys Chem, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2007年 / 8卷 / 06期

基金：

美国国家科学基金会;

关键词：

template; mesoporous TiO2; acid-ethanol; rutile ratio; photocatalytic;

D O I：

10.1016/j.catcom.2006.08.025

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：

Ultrafine mesoporous TiO2 was prepared via a sol-gel method with the template of PVP (polyvinylpyrrolidone). The photooxidated activity for decomposition of methyl orange and photoreduced activity for H-2 evolution were evaluated after the template was extracted by refluxing acid-ethanol mixture at different compositions. The highest activity was achieved by treatment with the mixture of 3% acid content. In this proposed method, applied PVP template is of advantage to form mesostructure and high surface area, as well as controllable nanocrystalline phase based on a appropriate acid treatment. (c) 2006 Published by Elsevier B.V.

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收藏

页码：936 / 940

页数：5

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