To provide a photocatalyst body which can transmit light into its inside (its center) and has the characteristics of fine photocatalyst particles, i.e. a large surface area, a high organic material adsorptivity, and optical activity; and its production method and using method.
The photocatalyst body is a complex composed of 0.01-10 wt% photocatalyst particles having an average particle size of 1-50 nm and a silica gel having an average pore size of 2-15 nm and an average particle size of 1-30 μm. The photocatalyst body is a titania-mixed silica hydrogel complex which is formed by mixing a silica sol having a silica concentration of 2-45% with a titania powder having a particle size of 1-50 nm in an amount of 0.01-10 wt% based on the silica solid content of the silica sol and gelling the resultant titania-mixed silica hydrosol. The production method and using method of the photocatalyst body are also provided.
COPYRIGHT: (C)2005,JPO&NCIPI
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Muto Ito
Fuji Silysia Chemical Co., Ltd.
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