| 摘要 |
PROBLEM TO BE SOLVED: To obtain a titanium oxide-carrying sheet excellent in deodorizing capability and in weatherability, etc., by incorporating photocatalytically active ultrafine-particle-size titanium oxide having a specified X-ray primary particle size and a specific average particle size of agglomerates by the laser diffraction/ scattering method into a carrier mainly comprising an organic composition. SOLUTION: Ultrafine-paticle-size titanium oxide having an X-ray primary particle size of 3 nm or lower and an average particle size of agglomerates by the laser diffraction/scattering method of 1-3 μm is incorporated or impregnated into or applied to a carrier mainly comprising an organic composition. The titanium oxide exhibits a high photocatalytic activity since the surface of the titanium oxide adsorbs volatile organic compounds at a high adsorption efficiency; positive holes arriving at the surface of the titanium oxide by ultraviolet irradiation increases; and the titanium oxide are distributed at a high density on the surface of hydroxy radical titanium oxide being an active species. Since the titanium oxide, is a power comprising relatively large-size agglomerates, the contact area with an organic composition, etc., is small and the composition, etc., are hardly photodecomposed. |
