Method for activating a photocatalytically active outer layer deposited on a composite

US11918979B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Gaby Gotzmann · Dresden, DE
• Uwe Vogel · Munich, DE
• Daniel Gloss · Mülheim an der Ruhr, DE
• Jessy Schönfelder · Dresden, DE
• Philipp Wartenberg · Dresden, DE

Key dates

• Filing date: Jul 25, 2019
• Grant date: Mar 5, 2024
• Expiry date: Apr 12, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61L2209/111
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a method for activating a photocatalytically active, for example titanium-dioxide-containing, outer layer (13; 23) deposited on a composite, by means of at least one element (14; 24) generating a radiation, for example for generating ultraviolet radiation. The following method steps are comprised here: •a) forming the at least one radiation-generating first element (14; 24) within the composite; •b) forming at least one sensor (16; 26) within the composite; •c) recording an actual value of a physical variable characterizing luminous radiation by means of the at least one sensor (16; 26), wherein the luminous radiation is emitted by a light-generating second element (15; 25); •d) comparing the recorded actual value with a first threshold value within an evaluation device and switching on the at least one radiation-generating first element (14; 24) if the actual value is below or above the first threshold value.