| 摘要 |
<p>A particulate photocatalyst comprising fine titanium dioxide particles the surface of which has been coated with a film of a sparingly water-soluble organic substance such as calcium salt of a polycarboxylic acid, polysulfonic acid, or anionic surfactant. This particulate photocatalyst is produced by adding an insolubilizing agent to a slurry containing a film-forming water-soluble organic substance and fine titanium dioxide particles to form a film of a sparingly water-soluble organic substance on the surface of the fine titanium dioxide particles. It is used, e.g., for environmental purification as an organic polymer composition containing the particulate photocatalyst, a molding of the organic polymer composition, a structure having on the surface the particulate photocatalyst, or the like.</p> |
