Article ID Journal Published Year Pages File Type
1661683 Surface and Coatings Technology 2007 5 Pages PDF
Abstract

Carbon-incorporated titanium oxide (TiOxCy) films in anatase structure were deposited by co-sputtering titanium and graphite targets in argon and oxygen. The incorporation of carbon into TiO2 retained the crystallinity of anatase phase and the carbon is a mix of both graphitic as well as substitutional in nature. The microstructure of the TiOxCy films consisted of columnar carbon-doped titania grains covered with graphitic carbon along the grain boundaries. The films exhibited absorption bands in the visible light region with an absorption edge red-shifted up to ∼ 450 nm corresponding to a band gap ∼ 2.7 eV and while absorption tails continued to above 700 nm. The films possessed outstanding visible light-induced photocatalytic properties in the reduction of silver ions, degradation of methylene blue and superhydrophilicity.

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Physical Sciences and Engineering Materials Science Nanotechnology
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