C - Chemistry – Metallurgy – 03 – C
Patent
C - Chemistry, Metallurgy
03
C
C03C 25/52 (2006.01) C04B 41/52 (2006.01)
Patent
CA 2543075
The invention relates to a structure, comprising a substrate supporting a layer with a photocatalytic and anti-soiling property on at least part of the surface thereof, said layer being based on titanium dioxide (TiO¿2?) which is at least partially crystallized in the anatase form thereof. Said structure is characterised in comprising a sublayer (SC) directly under at least one TiO¿2? layer, said sublayer having a crystallographic structure which provides assistance to crystallization by heteroepitaxial growth in the anatase form of the TiO¿2?-based upper layer, the photocatalytic property being obtained without any heating step.
Structure comprenant un substrat portant, sur au moins une partie de sa surface, une couche à propriété photocatalytique, anti-salissures, à base de dioxyde de titane (TiO2) au moins en partie cristallisé dans sa forme anatase, caractérisée par le fait qu'elle comporte, immédiatement au-dessous d'au moins une couche de TiO2, une sous-couche (SC) présentant une structure cristallographique ayant permis une assistance à la cristallisation par croissance hétéroépitaxiale dans la forme anatase de la couche supérieure à base de TIO2, la propriété photocatalytique ayant été acquise sans une quelconque étape de chauffage.
Labrousse Laurent
Nadaud Nicolas
Goudreau Gage Dubuc
Saint-Gobain Glass France
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