高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (4): 745.

• 研究简报 • 上一篇    下一篇

超亲水TiO2和TiO2-SiO2表面的动态润湿性

冯文辉, 管自生, 蒋峰芝, 张金彪, 宋延林, 江雷   

  1. 中国科学院化学研究所, 北京 100080
  • 收稿日期:2001-12-18 出版日期:2003-04-24 发布日期:2003-04-24
  • 通讯作者: 江E-mai雷(1965年出生),男,博士,研究员,博士生导师,从事纳米功能界面材料研究.E-mail:jiangE-mailei@infoc3.icas.ac.cn E-mail:E-mailE-mailei@infoc3.icas.ac.cn
  • 基金资助:

    “九七三”国家重大基础研究项目(批准号:19990644504)资助

Dynamic Wettability of Superhydrophilic TiO2 and TiO2 SiO2 Surfaces

FENG Wen Hui, GUAN Zi Sheng, JIANG Feng Zhi, ZHANG Jin Biao, SONG Yan Lin, JIANG Lei   

  1. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2001-12-18 Online:2003-04-24 Published:2003-04-24

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关键词: TiO2膜, SiO2, 动态润湿, 超亲水表面

Abstract: The dynamic wetting of water spreading on TiO2 and TiO2 SiO2 films prepared by sol gel method and subsequently treated by air plasma and UV irradiation was investigated. Water completely spread on TiO2 surface within 3 s and its dynamic contact angles can be expressed by a power law θd= k(t+a)-n with the n value 0.98. Less than 50%(molar fraction) SiO2 addition can accelerate the dynamic water spreading rate on the TiO2 SiO2 films and the optimum molar fraction of SiO2 amount corresponding to as annealed, air plasma, and UV irradiation treatment process is 15%, 10% and 20%, respectively.

Key words: TiO2 film, SiO2, Dynamic wetting, Superhydrophilic surface

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