SUBSTRATE PROVIDED WITH PHOTOCATALYST COATING

摘要

PROBLEM TO BE SOLVED: To provide such a photocatalyst coating on a substrate as can be manufactured industrially and offers the clear, dirt-preventive action on the substrate.

SOLUTION: The substrate having a coating of photocatalystic characteristics coated on at least one surface and at least one part thereof, is glass, a ceramic or glassy ceramic which contains at least partially the anatase-type of titanium dioxide of a crystalline material, with the above coating having a roughness of 2-20 nm in the square root of the mean square value, and with the titanium dioxide of a crystalline material having a morphology of a crystallite having an average size of 0.5-60 nm.

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