Photocatalytic oxide composition, thin film, and composite

Details Photocatalytic oxide composition, thin film, and composite Photocatalytic oxide composition, thin film, and composite

B - Operations, Transporting

01

J

B01J 21/06 (2006.01) B01J 35/02 (2006.01) C09D 1/00 (2006.01)

Patent

CA 2312788

A composition comprising oxide particles having photo-catalytic activity, a solvent-soluble zirconium compound and a solvent. Preferably, the oxide particles having photo-catalytic activity are titanium oxide particles; the oxide particles have an average particle diameter of 0.005 to 0. 39 m; and the amount of the zirconium compound is in the range of 3 - 200 parts by weight, as ZrO2, per 100 parts by weight of the oxide particles. A composite of a film having a photo- catalytic activity with a base material is made by coating the base material with the above composition to form a film, and curing the film on the base material.

L'invention porte sur une composition comprenant des particules d'oxyde photocatalytique, un composé de zirconium soluble dans un solvant, et un solvant. L'oxyde photocatalytique est de préférence un oxyde de titane ayant un diamètre moyen de particule compris entre 0,005 et 0,3 mu m, le composé de zirconium étant ajouté dans une quantité comprise entre 3 et 200 parts en poids en termes de ZrO2 pour 100 parts en poids de particules d'oxyde. On obtient un matériau composite se présentant sous forme de film mince photocatalytique et d'un substrat en recouvrant la surface du substrat de la composition précitée, puis en la faisant durcir.

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