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Acta Chimica Sinica ›› 2005, Vol. 63 ›› Issue (21): 1951-1956. Previous Articles     Next Articles

Original Articles

氧化钼-二氧化钛复合膜的可见光致变色性能研究

王静1，张光晋1，杨文胜2，姚建年*,1   

  1. (1中国科学院化学研究所分子科学中心 北京 100080)
    (2吉林大学化学学院 长春 130023)
  • 投稿日期:2005-03-08 修回日期:2005-07-05 发布日期:2010-12-10
  • 通讯作者: 姚建年

Study on the Visible Light Photochromism of Molybdenum Oxide-Titania Composite Films

WANG Jing 1,ZHANG Guang-Jin 1,YANG Wen-Sheng b,YAO Jian-Nian*,1   

  1. (1 Key Laboratory of Photochemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences,
    Beijing 100080)
    (2 College of Chemistry, Jilin University, Changchun 130023)
  • Received:2005-03-08 Revised:2005-07-05 Published:2010-12-10
  • Contact: YAO Jian-Nian

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MoO3•H2O-TiO2 composites with different molar ratios of MoO3/TiO2 (2～10) prepared by sol-gel method were deposited into thin films by using citric acid as dispersant. The thin films prepared show visible light photochromism (λ≥420 nm). It was identified that the Mo—O—Ti bond formed at the interface of MoO3•H2O and TiO2 in the composites facilitated the charge transfer from TiO2 to MoO3•H2O and was responsible for the visible light photochromism of the composite films. The kinetics of the coloration process of the composite film was also investigated to find that the rate of the coloration process strongly depended on the charge transfer energies and molar ratios of MoO3/TiO2 in the films.

Key words: molybdenum oxide, TiO2, composite, visible light photochromism