Photocatalytically-activated self-cleaning article and method of making same

The invention claims a method and product, wherein the photo-catalysis to activated of the substrate through the spray coating device of chemical vapour deposition or the magnetron sputter a vacuum provided from the cleaning coating with the photo-catalysis activated to the surface of the substrate. The thickness of the coating is at least about 500 angstroms, and 4-substituted in a coating source substrate with sodium ion poison. Alcohol in the deposition photo-catalysis activated before cleaning coating, a using a sodium ion diffusion layer of the substrate surface, to prevent the photo-catalysis to activated from the cleaning coating with sodium ion poison. The matrix comprises glass substrate, for example glass plate and float glass with.