Ultrasonic preparation of mesoporous titanium dioxide nanocrystalline photocatalysts and evaluation of photocatalytic activity

被引：137

作者：

Yu, JG ^{[1
]}

Zhou, MH

Cheng, B

Yu, HG

Zhao, XJ

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

[2] Yunyang Med Coll, Staff Room Chem, Shiyan 442000, Hubei, Peoples R China

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2005年 / 227卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

TiO2; mesoporous; nanocrystalline; ultrasonic-induced hydrolysis; photocatalytic degradation; formaldehyde; acetone;

D O I：

10.1016/j.molcata.2004.10.012

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：

Mesoporous titanium dioxide nanocrystalline powders were synthesized by ultrasonic-induced hydrolysis reaction of tetrabutyl titanate (Ti(OC4H9)(4)) in pure water without using any templates or surfactants. The as-prepared samples were characterized with X-ray diffraction (XRD) and N-2 adsorption-desorption measurements. The photocatalytic activity of the samples was evaluated using the probe reaction: the photocatalytic oxidation of mixture of formaldehyde and acetone at room temperature. It was found that the as-prepared products by the ultrasonic method were composed of anatase and brooktie phases. The photocatalytic activity of the samples prepared by ultrasonic method is higher than that of commercial Degussa P25 and the samples prepared by conventional hydrolysis method. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：75 / 80

页数：6

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