Method for the photocatalytically active coating of surfaces

US9556508B2 · kind B2 · utility

Assignee

• Linde GmbH · DE

Inventors

• Jan-Oliver Kliemann · Hamburg, DE
• Henning Gutzmann · Hamburg, DE
• Thomas Klassen · Hamburg, DE
• Frank Gaertner · Ladenburg, DE

Key dates

• Filing date: Sep 18, 2012
• Grant date: Jan 31, 2017
• Expiry date: Sep 18, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C28/322
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A method for the photocatalytically active coating of surfaces is presented and described, as well as an article (1) photocatalytically actively coated according to this method. The object of providing a method for the photocatalytically active coating of, in particular, metallic surfaces, whereby a permanently stable coating is produced without negatively affecting the photocatalytic activity of the layer, is achieved by a method, in which a substrate article is prepared which has a surface, a metallic adhesion-promoting layer is applied to the surface of the substrate article, a photocatalytically active layer consisting of one or more metal oxides is applied to the adhesion-promoting layer, wherein the metallic adhesion-promoting layer and the surface of the substrate article consist of a different material and the adhesion-promoting layer is selected such that it is not oxidized or reduced by the photocatalytically active layer.