Photoactive coating, coated article, and method of making same

Details Photoactive coating, coated article, and method of making same Photoactive coating, coated article, and method of making same

C - Chemistry, Metallurgy

03

C

C03C 17/34 (2006.01) C03C 17/245 (2006.01)

Patent

CA 2452723

A method of forming a photocatalytic coating includes depositing a precursor composition over at least a portion of a substrate surface by a coating device. The precursor composition includes a titania precursor material and at least one other precursor material having a metal selected from boron, strontium, zirconium, lead, barium, calcium, hafnium, lanthanum, and mixtures thereof. Sufficient other precursor material is added to the composition such that a molar ratio of the selected metal to titanium in the applied photocatalytic coating is in the range of about 0.001 to about 0.05.

La présente invention concerne un procédé de formation d'un revêtement catalytique comportant le dépôt d'une composition précurseur sur au moins une portion d'une surface de substrat au moyen d'un dispositif de revêtement. La composition précurseur comprend un matériau précurseur d'oxyde de titane et au moins un autre matériau précurseur comprenant un métal choisi parmi le bore, le strontium, le zirconium, le plomb, le baryum, le calcium, l'hafnium, le lanthane, et des mélanges de ceux-ci. On ajoute un autre matériau précurseur en quantité suffisante à la composition de sorte que le rapport molaire du métal choisi au titane dans le revêtement photcatalytique appliqué soit compris entre environ 0,001 à environ 0,05.

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