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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 26, Number 10
BKCSDE 26(10)
October 20, 2005 

Photoinduced Superhydrophilicity in TiO2 Thin Films Modified with WO3
Young Kyu Hwang, Kashinath Rangu Patil, Hye-Kyung Kim, Shivaram Dattatraya Sathaye, Jin-Soo Hwang, Sang-Eon Park*, Jong-San Chang*
Hydrophilicity, Water contact angle, TiO2 thin films, WO3
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 TiO2 have shown the highest hydrophilicity after UV-irradiation. The effect of composition on photoinduced hydrophilicity of the WO3-TiO2 films was also investigated. The films were characterized by XRD, SEM, AFM and XPS.
1515 - 1519
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