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Reason for the loss of hydrophilicity of TiO2 film and its photocatalytic regeneration

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Abstract

TiO2 film was prepared on soda-lime glass by sol-gel method. The water contact angle (ϑw) of the fresh TiO2 film is 0°. During storage in air, the surface of TiO2 film is gradually converted to the hydrophobic state. XPS and ITD results reveal that it is due to the adsorption of organic contaminants on TiO2 surface in air ambience. The lost hydrophilicity of TiO2 film can be regenerated by UV illumination.

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Authors and Affiliations

  1. Laboratory of Special Functional Materials, Henan University, 475001, Kaifeng, China

    Yin Haoyong, Jin Zhensheng, Zhang Shunli, Wang Shoubin & Zhang Zhijun

Authors
  1. Yin Haoyong
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  2. Jin Zhensheng
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  3. Zhang Shunli
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  4. Wang Shoubin
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  5. Zhang Zhijun
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Correspondence to Jin Zhensheng.

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Haoyong, Y., Zhensheng, J., Shunli, Z. et al. Reason for the loss of hydrophilicity of TiO2 film and its photocatalytic regeneration. Sc. China Ser. B-Chem. 45, 625–632 (2002). https://doi.org/10.1007/BF03182534

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  • DOI: https://doi.org/10.1007/BF03182534

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