AUGMENTATION OF PHOTOCATALYTIC ACTIVITY OF TiO2 THIN FILMS PREPARED BY A SOL-GEL TECHNIQUE |
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Authors: | T Kitamura |
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Affiliation: | Department of Chemical Process Engineering , Toyama University , Toyama , Japan |
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Abstract: | In order to increase the photocatalytic activity on TiO2 thin film per its external surface area, the structure of flat thin film was modified by adding a small amount of polyethylene glycol (PEG) to TiO2 sol solution. By firing PEG contained in a TiO2 gel film, a porous structure was developed. The photocatalytic activities of the thin films prepared thus were evaluated by the degradation of 2-propanol in the aqueous solutions under black light illumination. The photocatalytic activity of TiO2 thin film prepared with added PEG 400 by 2.6 wt% or PEG 2000 by 9.5 wt% was increased by about 30% as compared to that prepared without added PEG. |
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Keywords: | titanium dioxide photocatalysis augmentation of activity oxidative degradation |
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