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Preparation of Metal-Doped TiO_2 film by Sol-gel Process for Photocatalytic Degradation of Gas-phase Formaldehyde

【摘要】:正 Titanium dioxide thin film is widely used in various fields,such as optical and protective coating andoptical fibers because of their excellent chemical stability,mechanical hardness and optical transmittancewith high refractive index.Recently,the application of TiO2 film photocatalyst has mainly been focused onthe elimination of toxic and hazardous organic substances in wastewater and waste air.However,theeffective photo-excitation of TiO2 film requires the application of light with energy higher than the band

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