Natural superhydrophilicity and photocatalytic properties of sol–gel derived ZnTiO3-ilmenite/r-TiO2 films

文献情報

出版日 2010-10-21

DOI 10.1039/C004517A

インパクトファクター 3.676

著者

Galina Krylova, Arnaud Brioude, Soraya Ababou-Girard, Jan Mrazek, Lubomir Spanhel

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要旨

The additive free heteronucleation and nanocrystallization of ternary ZnxTiyOz sols and coatings is presented. A proper adjustment of the Zn/Ti ratio in the sol allows the formation of elaborate superhydrophilic cubic spinel-like Zn2TiO4, c-ZnTiO3 or h-ZnTiO3-ilmentite/r-TiO2-rutile films. Their morphology and natural superhydrophilicity can be fine-tuned by the inclusion of 5% silica. This doping step delivers high dye intake capacities and water contact angle values below 3°. XPS analysis indicates that Zn and Si enrichment enables greater surface hydroxylation and thus improved water wetting behaviour. The transparent h-ZnTiO3-ilmenite/r-TiO2 nanocomposite coatings deposited on glass and Si-wafers show a remarkable activity in the photomineralization of fatty-acids.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

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