Process for producing titanium oxide thin film, and photocatalyst

摘要

PCT No. PCT/JP97/03155 Sec. 371 Date May 12, 1998 Sec. 102(e) Date May 12, 1998 PCT Filed Sep. 8, 1997 PCT Pub. No. WO98/11020 PCT Pub. Date Mar. 19, 1998The present invention relates to a process for producing a titanium oxide thin film, said process comprises soaking a substrate in an aqueous solution containing 10-9 to 9x10-2 mol/L of a titanium fluoro complex compound in the presence of a fluoride ion capturing agent to form a titanium oxide thin film on the surface of the substrate; and a photocatalyst comprising the titanium oxide thin film thus produced; and can provide a simple process for the formation of a highly homogeneous titanium oxide thin film which is fast and corrosion resistant, and has a high refractive index and a catalytic activity for the photoreaction.