Photocatalytic TiO2 Coatings: Effect of Substrate and Template |
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Authors: | Ur?ka L ?tangar Urh ?ernigoj Polonca Treb?e Ksenija Maver and Silvia Gross |
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Institution: | (1) Molecular Genetics, Inc., Minnetonka, Minnesota; |
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Abstract: | Transparent TiO2 films with a high photodegradation activity towards an azo dye in aqueous solution were prepared by sol–gel processing. Films
on soda–lime glass supports protected with a thin silica barrier layer exhibited better crystallization and monodisperse nanoparticles,
higher absorption of light below 370 nm, and higher photocatalytic activity than those films deposited on bare glass supports
proving the detrimental effect of interdiffused sodium ions on the development of the anatase nanostructure. The effect of
substrate was more pronounced in thinner films (300 nm) than in thicker ones (1200 nm), which were achieved by adding a template
(i.e. Pluronic F127) to the sol. |
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Keywords: | |
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