Preparation of the TiO2 Thin Film Photocatalyst by the Dip-Coating Process |
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Authors: | Nobuaki Negishi Koji Takeuchi Takashi Ibusuki |
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Institution: | (1) National Institute for Resources and Environment, 16-3 Onogawa, Tsukuba, Ibaraki, 305, Japan |
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Abstract: | Titanium dioxide (TiO2) coated glass-plate thin film photocatalysts for elimination of air pollutants, were prepared by the dip-coating process with titanium alkoxide including polyethylene glycol (PEG). The surface structure of these thin films changed drastically with the size of the PEG. They were either transparent or opaque. Nitrogen oxides (NOx), one of the most hazardous of air pollutants, were found to be efficiently eliminated by the thin film photocatalyst. The photocatalytic activities of the transparent and opaque thin films were found to be almost equal. This may be due to the two films having the same surface area. The highest activity was obtained for thin films around 1 m. |
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Keywords: | elimination of air pollutant thin film photocatalyst TiO2 dip-coating method |
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