The invention provides a substrate bearing a photocatalytic coating. In some embodiments, the coating includes a photocatalytic film comprising titania deposited over a layer comprising tungsten oxide, aluminum oxide, niobium oxide or zirconium oxide. Additionally or alternatively, the photocatalytic...http://www.google.fr/patents/US7862910?utm_source=gb-gplus-shareBrevet US7862910 - Photocatalytic coatings having improved low-maintenance properties
Photocatalytic coatings having improved low-maintenance properties
