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1. (WO1998052871) TITANIUM OXIDE-CONTAINING MATERIAL AND PROCESS FOR PREPARING THE SAME

Pub. No.:    WO/1998/052871    International Application No.:    PCT/JP1998/002187
Publication Date: Fri Nov 27 00:59:59 CET 1998 International Filing Date: Tue May 19 01:59:59 CEST 1998
IPC: C01G 23/053
C03C 17/25
Applicants: KYORASHA CO., LTD.

MORI, Takefumi

MORITOSHI KABUSHIKIKAISHA

Inventors: MORI, Takefumi

Title: TITANIUM OXIDE-CONTAINING MATERIAL AND PROCESS FOR PREPARING THE SAME
Abstract:
A titanium oxide-containing material having a surface plated with titanium oxide. It is prepared by dissolving titanium fluoride (such as titanium tetrafluoride) in an amount of 2.0 % owf in water, immersing a raw material in the obtained aqueous solution to treat the material with the aqueous solution at room temperature for 30 min, and adding a 0.5 : 1 : 1 (on a weight basis) mixture of boric acid, citric acid, and DL-malic acid in an amount of 0.5 % owf to the aqueous solution to treat the material with the aqueous solution at 50 °C for 30 min, followed by washing with water. The raw materials usable herein include synthetic fibers, metals, glass, and woods, and may be in the form of sheet, plate, fiber, rod, or the like. Introduction of a noble metal, such as gold or silver, in addition to titanium oxide, into the surface of the material enables the acceleration of the photocatalytic action of titanium oxide.