C - Chemistry – Metallurgy – 03 – C
Patent
C - Chemistry, Metallurgy
03
C
C03C 17/34 (2006.01)
Patent
CA 2648686
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 film can include both titania and a material selected from the group consisting of nitrogen, tantalum, copper and silica. The invention also provides methods of depositing such coatings.
L'invention concerne un substrat portant un revêtement photocatalytique. Selon certains modes de réalisation, ce revêtement est constitué d'un film photocatalytique contenant du dioxyde de titane déposé sur une couche renfermant de l'oxyde de tungstène, de l'oxyde d'aluminium, de l'oxyde de niobium ou de l'oxyde de zirconium. En complément ou en variante, ce film photocatalytique peut contenir à la fois du dioxyde de titane et une substance sélectionnée dans le groupe constitué par l'azote, le tantale, le cuivre et la silice. Cette invention concerne également des procédés pour déposer lesdits revêtements.
Burrows Keith
Krisko Annette J.
Myli Kari
Borden Ladner Gervais Llp
Cardinal Cg Company
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