SUBSTRATE WITH PHOTOCATALYTIC COATING

摘要

The invention concerns a method for obtaining a substrate (1) provided with a coating (3) with photocatalytic properties, crystallised particles of an oxide of metal A with photocatalytic properties being incorporated in said coating by means of a mineral binder (5) comprising at least an oxide of metal B also having photocatalytic properties in crystallised form and optionally at least an oxide of metal M devoid of photocatalytic properties and/or at least a silicon compound such as silicon oxide SiO2. It consists in depositing the coating (3) from liquid phase dispersions containing: said crystallised particles of metal A oxide; at least a precursor compound of the binder (5) of metal B oxide and optionally a precursor compound of metal M oxide and of the Si compound, in a relative proportion A(B + M + Si) by weight ranging between 60/40 and 40/60. The invention also concerns the resulting coated substrate and its various applications.