Abstract: The invention relates to biocidal granules composed of a mineral core coated with at least one porous inorganic layer including at least one organic compound capable of limiting or preventing the growth of microorganisms, in particular of algae. The invention also relates to a sol-gel process for the preparation of the biocidal granules and to the use of these biocidal granules in building materials, in particular shingles and siding coatings.

Abstract: The invention relates to a transparent or semi-transparent substrate having, over at least a portion of at least one of its surfaces, a photocatalytic coating based on titanium oxide and characterized in that the coated surface has a luminous reflectance less than that of a non-coated surface of the substrate. The invention also relates to methods for obtaining a substrate of this type and to uses for this substrate.

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.

Abstract: The invention relates to a self-cleaning lighting device comprising a light source and a wall, which permits a portion of at least the radiation emitted by said source to pass therethrough and which is covered, over a portion of at least one of its two faces, by a photocatalytically active layer. The invention is characterized in that under the weakest illumination conditions, the photocatalytic activity of said layer is high enough for degrading and reducing organic soilings into easily eliminable particles that do not adhere to said layer, and/or for conferring a hydrophilic character to this layer. The invention also relates to a method for producing the aforementioned device, a translucent wall provided for this device, and to the use of the device for lighting tunnels, public lighting, airport runway lighting, indoor lighting or for headlamps or indicator lights of transportation vehicles.

Abstract: The invention relates to biocidal granules composed of a mineral core coated with at least one porous inorganic layer including at least one organic compound capable of limiting or preventing the growth of microorganisms, in particular of algae. The invention also relates to a sol-gel process for the preparation of said biocidal granules and to the use of these biocidal granules in building materials, in particular shingles and siding coatings.

Abstract: The invention relates to a self-cleaning lighting device comprising a light source and a wall, which permits a portion of at least the radiation emitted by said source to pass therethrough and which is covered, over a portion of at least one of its two faces, by a photocatalytically active layer. The invention is characterized in that under the weakest illumination conditions, the photocatalytic activity of said layer is high enough for degrading and reducing organic soilings into easily eliminable particles that do not adhere to said layer, and/or for conferring a hydrophilic character to this layer. The invention also relates to a method for producing the aforementioned device, a translucent wall provided for this device, and to the use of the device for lighting tunnels, public lighting, airport runway lighting, indoor lighting or for headlamps or indicator lights of transportation vehicles.

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.

Abstract: The invention relates to a transparent substrate based on glass or one or more polymers, or a ceramic or glass substrate, or a substrate made of architectural material of the type comprising a wall render, a concrete slab or block, architectural concrete, roof tile, material of cementitious composition, terracotta, slate, stone, metal surface or a fibrous substrate, based on glass of the mineral insulation wool type, or glass reinforcement yarns. This substrate is distinguished in that it is provided, on at least part of its surface, with a coating whose mesoporous structure exhibits photocatalytic properties and comprises at least partially crystallized titanium oxide. Process for manufacturing this substrate, its application in glazing, as architectural material or as mineral insulation wool is also described.

Abstract: The invention relates to a substrate provided with a mechanically resistant, long-lasting coating, and suitable for being handled by a user. Said substrate is characterised in that the coating comprises a first photocatalytic compound which is intimately associated with a second compound containing an energy jump between the upper level of the valence band thereof and the lower level of the conductive band thereof, corresponding to a wavelength in the visible field. The invention also relates to a glazing comprising said substrate, to the applications of the inventive substrate, and to the methods for the production thereof.

Abstract: The subject of the invention is a substrate provided on at least part of at least one of its faces with a coating having photocatalytic properties, containing photocatalytic titanium oxide, especially crystallized in the anatase form, in an essentially mineral binder comprising at least one semiconducting metal oxide. The subject of the invention is also a process for obtaining said substrate, especially by thermal decomposition of precursors or by a vacuum deposition technique.

Abstract: The invention relates to a method of modifying a layer having photocatalytic and anti-fouling properties which is based on titanium dioxide (TiO2) and which can absorb photons in the UV region and, in particular, in the UVA region, in order to render same capable of absorbing photons in the visible spectrum, said TiO2-based layer being applied to a substrate either directly or with the insertion of at least one functional sub-layer. The invention is characterised in that the TiO2-based layer is subjected to a heat treatment in an atmosphere comprising nitrogen or nitrogen and at least one reducing gas for a sufficient period of time in order to obtain the desired visible photon absorption property, said substrate and, if necessary, said sub-layer(s) having been selected for their ability to withstand the heat treatment.

Abstract: The invention relates to a transparent or semi-transparent substrate having, over at least a portion of at least one of its surfaces, a photocatalytic coating based on titanium oxide and characterized in that the coated surface has a luminous reflectance less than that of a non-coated surface of the substrate.

Abstract: The invention relates to a transparent substrate based on glass or one or more polymers, or a ceramic or glass substrate, or a substrate made of architectural material of the type comprising a wall render, a concrete slab or block, architectural concrete, roof tile, material of cementitious composition, terracotta, slate, stone, metal surface or a fibrous substrate, based on glass of the mineral insulation wool type, or glass reinforcement yams. This substrate is distinguished in that it is provided, on at least part of its surface, with a coating whose mesoporous structure exhibits photocatalytic properties and comprises at least partially crystallized titanium oxide. Process for manufacturing this substrate, its application in glazing, as architectural material or as mineral insulation wool is also described.

Abstract: The subject of the invention is a substrate provided on at least part of at least one of its faces with a coating having photocatalytic properties, containing photocatalytic titanium oxide, especially crystallized in the anatase form, in an essentially mineral binder comprising at least one semiconducting metal oxide.