TiO_2粉体を添加したペルオキソ改質アナターゼゾルから作製した膜の光触媒活性

概要

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Photodegradations of gaseous isopropyl alcohol over UV irradiated films prepared from peroxo-modified anatase sol(PA sol)were studied. When the amount of the film formed by PA sol was 0.25mg/cm^2, the film showed high photocatalytic activities, however, the activities for the films of 0.075 mg/cm^2 and 0.15 mg/cm^2 were low significantly. By use of PA sol added with TiO_2 powder(Degussa P25), the pore size in the film increased, the transmittance of the film decreased over the visible and UV region, and their photocatalytic activities were improved remarkably. In case of coating of 0.075 mg/cm^2, the film prepared from PA sol adding 20 mass% of TiO_2 powder showed about twentyfold photocatalytic activities compared with a film without TiO_2 powder. Maximum photocatalytic activity was achieved by use of the sample containing 60 mass% of TiO_2 powder.
社団法人日本セラミックス協会の論文
1999-01-01