ANTIBACTERIAL PHOTOCATALYTIC COATING MATERIAL AND ANTIBACTERIAL PHOTOCATALYTIC MEMBER

摘要

PROBLEM TO BE SOLVED: To obtain a cold curable antibacterial photocatalytic coating material having an antibacterial effect and excellent in hot water resistance and alkali resistance by mixing a coating material with a photocatalyst which comprises a low-cost oxide and exhibits a photocatalytic activity in a visible light region, and to provide an antibacterial photocatalytic member. SOLUTION: The antibacterial photocatalytic coating material contains an acrylic silicone coating material, an organic solvent and a photocatalyst, wherein the photocatalyst comprises an oxide composite having a joint of oxide semiconductors (I) and (II) having characteristics photocatalytic for each other and different in both the energy level of electrons on the bottom of a conduction band and the energy level of electrons at the top of a valence band in an energy and structure on the basis of a vacuum level, and at least the oxide semiconductor (I) has photocatalytic characteristics even in a visible light region. An antibacterial photocatalytic base material is obtained by using this coating material.