Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Keramischer Formkörper mit einer photokatalytisch aktiven, luftreinigenden, transparenten Oberflächenbeschichtung, Verfahren zur Herstellung desselben und dessen Verwendung
Oxidkeramischer Formkörper mit Kapillargefüge, der eine photokatalytisch Luft von Abgas reinigende Oberflächenbeschichtung aufweist, welche:a) peptisierte photokatalytisch-aktive Partikel umfasst und/oderb) photokatalytisch-aktive Partikel umfasst, welche von einer Schicht aus peptisierten Partikeln umgeben sind, wobei peptisierte Partikel Partikel sind, an die Salpetersäure, Zitronensäure und/oder Salzsäure angelagert ist, und wobei der Formkörper als Ziegel, Klinker oder Fassadenplatte ausgebildet ist.
The ceramic molded body e.g. roofing tile, brick, clinker and/or facade panel, made of oxide-ceramic base material with capillary structure, comprises a transparent air-cleaning surface coating, which comprises peptized photocatalytic-active particles (1) and/or photocatalytic-active particles, which are surrounded by a layer from peptized particles. The peptized photocatalytic active particles and/or photocatalytic active particles are formed as primary aggregates. The photocatalytic active particles comprise a band-gap of 3.0-3.5 eV and are producible by a sulfate pulping method. The ceramic molded body e.g. roofing tile, brick, clinker and/or facade panel, made of oxide-ceramic base material with capillary structure, comprises a transparent air-cleaning surface coating, which comprises peptized photocatalytic-active particles (1) and/or photocatalytic-active particles, which are surrounded by a layer from peptized particles. The peptized photocatalytic active particles and/or photocatalytic active particles are formed as primary aggregates. The photocatalytic active particles comprise a band-gap of 3.0-3.5 eV and are producible by a sulfate pulping method. The surface coating further comprises peptized non-photocatalytic active particles, non-photocatalytic active particles (3), which are surrounded by a layer from peptized particles and/or non-peptized non-photocatalytic active particles. The photocatalytic active particles and the non-photocatalytic active particles measured without peptization comprise average particle size of 2-20 nm and 10-15 nm respectively. A peptide layer (2) having a thickness of 1-2 nm is arranged on the non photocatalytic active peptized particles and/or on the photo-catalytic-active peptized particles. The surface coating comprises titanium dioxide-particle, which is surrounded by a completely or partially closed layer from peptized aluminum oxide-particle and/or peptized titanium dioxide-particle. Metatitanic acid-containing layer (4) is arranged between the titanium dioxide-particle and the closed layer and/or between the titanium dioxide-particle and the peptide layer. The titanium dioxide-particle, the metatitanic acid-containing layer and the closed layer form the primary aggregate with an average particle size of 35-45 nm. The surface coating has an average particle size of 2-5 nm and a thickness of 20-200 nm, and comprises an organic or inorganic bonding agent. The weight ratio of bonding agent to the photocatalytic-active particle is 1:1 to 1:0.6. An engobe or a glaze is arranged between the oxide-ceramic base material with capillary structure and the surface coating. The mass ratio of the photocatalytic particle to the non-photocatalytic-active particles is 3:6 to 4:6. The peptide- and/or metatitanic acid-containing layer are removed by heating at 300-600[deg] C. An independent claim is included for method for the production of a rough-ceramic molded article e.g. a roofing tile, brick, clinker and/or facade panel from oxide-ceramic base material.
Keramischer Formkörper mit einer photokatalytisch aktiven, luftreinigenden, transparenten Oberflächenbeschichtung, Verfahren zur Herstellung desselben und dessen Verwendung
Oxidkeramischer Formkörper mit Kapillargefüge, der eine photokatalytisch Luft von Abgas reinigende Oberflächenbeschichtung aufweist, welche:a) peptisierte photokatalytisch-aktive Partikel umfasst und/oderb) photokatalytisch-aktive Partikel umfasst, welche von einer Schicht aus peptisierten Partikeln umgeben sind, wobei peptisierte Partikel Partikel sind, an die Salpetersäure, Zitronensäure und/oder Salzsäure angelagert ist, und wobei der Formkörper als Ziegel, Klinker oder Fassadenplatte ausgebildet ist.
The ceramic molded body e.g. roofing tile, brick, clinker and/or facade panel, made of oxide-ceramic base material with capillary structure, comprises a transparent air-cleaning surface coating, which comprises peptized photocatalytic-active particles (1) and/or photocatalytic-active particles, which are surrounded by a layer from peptized particles. The peptized photocatalytic active particles and/or photocatalytic active particles are formed as primary aggregates. The photocatalytic active particles comprise a band-gap of 3.0-3.5 eV and are producible by a sulfate pulping method. The ceramic molded body e.g. roofing tile, brick, clinker and/or facade panel, made of oxide-ceramic base material with capillary structure, comprises a transparent air-cleaning surface coating, which comprises peptized photocatalytic-active particles (1) and/or photocatalytic-active particles, which are surrounded by a layer from peptized particles. The peptized photocatalytic active particles and/or photocatalytic active particles are formed as primary aggregates. The photocatalytic active particles comprise a band-gap of 3.0-3.5 eV and are producible by a sulfate pulping method. The surface coating further comprises peptized non-photocatalytic active particles, non-photocatalytic active particles (3), which are surrounded by a layer from peptized particles and/or non-peptized non-photocatalytic active particles. The photocatalytic active particles and the non-photocatalytic active particles measured without peptization comprise average particle size of 2-20 nm and 10-15 nm respectively. A peptide layer (2) having a thickness of 1-2 nm is arranged on the non photocatalytic active peptized particles and/or on the photo-catalytic-active peptized particles. The surface coating comprises titanium dioxide-particle, which is surrounded by a completely or partially closed layer from peptized aluminum oxide-particle and/or peptized titanium dioxide-particle. Metatitanic acid-containing layer (4) is arranged between the titanium dioxide-particle and the closed layer and/or between the titanium dioxide-particle and the peptide layer. The titanium dioxide-particle, the metatitanic acid-containing layer and the closed layer form the primary aggregate with an average particle size of 35-45 nm. The surface coating has an average particle size of 2-5 nm and a thickness of 20-200 nm, and comprises an organic or inorganic bonding agent. The weight ratio of bonding agent to the photocatalytic-active particle is 1:1 to 1:0.6. An engobe or a glaze is arranged between the oxide-ceramic base material with capillary structure and the surface coating. The mass ratio of the photocatalytic particle to the non-photocatalytic-active particles is 3:6 to 4:6. The peptide- and/or metatitanic acid-containing layer are removed by heating at 300-600[deg] C. An independent claim is included for method for the production of a rough-ceramic molded article e.g. a roofing tile, brick, clinker and/or facade panel from oxide-ceramic base material.
Keramischer Formkörper mit einer photokatalytisch aktiven, luftreinigenden, transparenten Oberflächenbeschichtung, Verfahren zur Herstellung desselben und dessen Verwendung
BAHNEMANN DETLEF PROF DR (Autor:in) / GAST EDUARD DR (Autor:in) / STOLL ALEXANDER DR (Autor:in) / ACKERHANS CARSTEN DR (Autor:in) / KÖNIGS MARCO (Autor:in) / STÖTZNER JULIA (Autor:in)
27.09.2018
Patent
Elektronische Ressource
Deutsch
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