Microbicidal substrate
AssigneeSaint-Gobain Glass France
InventorsCatherine Jacquiod, Léthicia Gueneau, Sophie Vanpoulle, Ronan Garrec, Jean-Gérard Leconte
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Abstract
The invention relates to a substrate comprising at least one photocatalytic compound active under the conditions of illuminating an interior of a building or transport vehicle, intended to neutralize the microorganisms with which it comes into contact, and also to its preparation processes and its uses as glazing or another substrate for disinfection, filtration, ventilation, etc.
Claims14
A substrate comprising at least one photocatalytic compound active under the conditions of illuminating a building or transport vehicle interior, intended to neutralize the microorganisms with which it comes into contact,
- (1) wherein said photocatalytic compound comprises TiO2 subjected to a heat treatment under an atmosphere of nitrogen or of nitrogen and of at least one reducing gas for a sufficient time to make it capable of absorbing photons from the visible spectrum;
- (2) wherein the substrate comprises a close combination of a first photocatalytic compound and a second compound having a bandgap between the upper level of its valence band and the lower level of its conduction band corresponding to a wavelength in the visible range;
- or
- (3) a combination of (1) and (2),
- wherein said photocatalytic compound comprises TiO2 doped with N and/or S.
Dependencies are inferred from the claim text.