Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Photoinduced Superhydrophilicity in TiO2 Thin Films Modified with WO3

  • Hwang, Young-Kyu (Research Center for Nanocatalysts, Korea Research Institute of Chemical Technology) ;
  • Patil, Kashinath Rangu (Research Center for Nanocatalysts, Korea Research Institute of Chemical Technology) ;
  • Kim, Hye-Kyung (Research Center for Nanocatalysts, Korea Research Institute of Chemical Technology) ;
  • Dattatraya Sathaye, Shivaram (Research Center for Nanocatalysts, Korea Research Institute of Chemical Technology) ;
  • Hwang, Jin-Soo (Research Center for Nanocatalysts, Korea Research Institute of Chemical Technology) ;
  • Park, Sang-Eon (Department of Chemistry, Inha University) ;
  • Chang, Jong-San (Research Center for Nanocatalysts, Korea Research Institute of Chemical Technology)
  • Published : 2005.10.20
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Abstract

Tungsten oxide-modified TiO2 thin films were formed on a glass substrate by sol-gel and dip coating processes using acetyl acetone as a chelating agent. The hydrophilic properties of the thin films were investigated with illumination of UV light. The dependence of water contact angle on material composition and morphology of the film is established with SEM image and AFM profile. The surface morphology was controlled with the change of precursor concentration. 0.01 M of tungsten oxide-modified Ti$O_2$ have shown the highest hydrophilicity after UV-irradiation. The effect of composition on photoinduced hydrophilicity of the W$O_3$-Ti$O_2$ films was also investigated. The films were characterized by XRD, SEM, AFM and XPS.

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References

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