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以正钛酸为原料制备纳米TiO2光催化剂

张汝冰; 高濂   

  1. 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室 上海 200050
  • 收稿日期:2001-02-19 修回日期:2001-05-16 出版日期:2002-03-20 网络出版日期:2002-03-20

Preparation of Photocatalytic Activity Nanosized TiO2 from Metatitanic Acid

ZHANG Ru-Bing; GAO Lian   

  1. State Key Lab of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China
  • Received:2001-02-19 Revised:2001-05-16 Published:2002-03-20 Online:2002-03-20

摘要: 以正钛酸为原料,通过直接水解法制备纳米TiO;并对样品分别进行了差热分析、X射线衍射分析和透射电子显微镜分析.结果表明,样品粒子为混晶型纳米TiO,单分散性良好,粒径分布范围狭窄.当它应用于阴离子表面活性剂十二烷基苯磺酸钠的光催化降解时,与P-25光催化剂相比,具有较好的催化活性.同时,我们用Al陶瓷膜回收纳米TiO循环再利用;这为纳米TiO在环保方面的大规模应用创造了条件.

关键词: 纳米TiO2, 正钛酸, 光催化

Abstract: Nanosized TiO2 particles were prepared by using the direct hydrolysis means from metatitanic acid. The specimens were characterized by transmission electron microscopy (TEM), X-ray diffractometry, differential thermal analysis. Nanosized TiO2 of mixing anatase and rutile prepared was found to show good photocatalytic properties in the photodegredation of anionic sodium dodecylbenzensulfonate surfactant, compared with P-25.

Key words: nanosized TiO2, photodegredation, metatitanic acid

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