TiO2/ACF的制备及光催化降解四氯乙烯性能

doi:10.7517/j.issn.1674-0475.2007.02.123

影像科学与光化学 ›› 2007, Vol. 25 ›› Issue (2): 123-129.DOI: 10.7517/j.issn.1674-0475.2007.02.123

TiO₂/ACF的制备及光催化降解四氯乙烯性能

黄徽, 杜玉扣, 戴兢陶, 杨平

苏州大学, 化学化工学院, 江苏, 苏州, 215123

收稿日期:2006-08-14 修回日期:2006-11-16 出版日期:2007-03-23 发布日期:2007-03-23
通讯作者: 杨平,E-mail:pyang@suda.edu.cn.
基金资助:
国家自然科学基金(20543001)

Preparation of TiO₂/ACF Catalysts and Their Photodegradation on Tetrachloroethylene

HUANG Hui, DU Yu-kou, DAI Jing-tao, YANG Ping

College of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215123, Jiangsu, P. R. China

Received:2006-08-14 Revised:2006-11-16 Online:2007-03-23 Published:2007-03-23

摘要/Abstract

摘要： 以钛酸四丁酯为前驱物,活性炭纤维(ACF)为载体,蔗糖为胶粘剂,采用真空吸附水解的方法制得了TiO₂/ACF催化剂.采用BET、XRD、SEM等手段对其物理化学特性进行表征,以四氯乙烯光降解反应为探针反应,考察了TiO₂/ACF催化剂的光催化降解性能.实验结果表明,采用真空吸附水解法可以将TiO₂很好地负载到活性炭纤维表面上.通过优化条件制备的TiO₂/ACF催化剂在光照2h条件下,可以将水中溶解量的四氯乙烯降解90%以上.催化剂可以多次循环使用,光催化反应活性不变.

关键词: 活性炭纤维, 二氧化钛, 四氯乙烯, 光催化降解

Abstract: Photocatalysts of TiO₂ supported on activated carbon fibre(ACF) were prepared by means of vacuum adsorption-hydrolysis method,using sucrose as a binder between TiO₂ and ACF.The TiO₂/ACF catalysts were characterized by BET,XRD,and SEM.The photodegradation activity of TiO₂/ACF was investigated using tetrachloroethylene(TCE) as a probe molecule.The results indicate that TiO₂ can be loaded on the surface of the ACF perfectly through the vacuum absorption-hydrolysis method.The photodegradation yield of TCE in aqueous solution is beyond 90% using the catalyst prepared in optimum method under the UV-visible light irradiation for two hours.The catalyst can be recycled several times without losing its photocatalytic activity.

Key words: activated carbon fibres, titanium dioxide, tetrachloroethylene, photodegradation

中图分类号:

黄徽, 杜玉扣, 戴兢陶, 杨平. TiO₂/ACF的制备及光催化降解四氯乙烯性能[J]. 影像科学与光化学, 2007, 25(2): 123-129.

HUANG Hui, DU Yu-kou, DAI Jing-tao, YANG Ping. Preparation of TiO₂/ACF Catalysts and Their Photodegradation on Tetrachloroethylene[J]. Imaging Science and Photochemistry, 2007, 25(2): 123-129.

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TiO₂/ACF的制备及光催化降解四氯乙烯性能

Preparation of TiO₂/ACF Catalysts and Their Photodegradation on Tetrachloroethylene

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