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Natural superhydrophilic TiO2/SiO2 composite thin films deposited by radio frequency magnetron sputtering
- Source :
-
Journal of Alloys & Compounds . Jun2009, Vol. 479 Issue 1/2, p532-535. 4p. - Publication Year :
- 2009
-
Abstract
- Abstract: TiO2/SiO2 composite thin films deposited on various substrates have been prepared by radio frequency magnetron sputtering from a composite target. The composite films were characterized by X-ray diffraction (XRD), atomic force microscopy, X-ray photoelectron spectroscopy and water contact angel measurements. XRD analysis indicates the amorphous structures of TiO2/SiO2 composite thin films. Contact angle results show that TiO2/SiO2 composite thin films represent natural superhydrophilicity without UV irradiation due to the enhanced acidity at SiO2–TiO2 interfaces. The heat treatment is necessary to promote thermal diffusion of Si4+ or Ti4+ cations within TiO2 or SiO2 hosts. In addition, radio frequency magnetron sputtering also may play a role in the formation of hydrophilic film surfaces. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 479
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 39781754
- Full Text :
- https://doi.org/10.1016/j.jallcom.2008.12.125