Abstract:
A photocatalytic functional film has a structure of a substrate, a barrier layer and a photocatalytic layer stacked one on another. The barrier layer is an amorphous TiO2 film, the photocatalyst layer comprises an amorphous TiO2 film, and particles of visible light responsive photocatalytic material formed on the surface of the amorphous TiO2 film. A method for producing a photocatalytic functional film includes: adding an alcohol solvent and an acid to a titanium precursor to obtain a TiO2 amorphous sol by dehydration and de-alcoholization reaction; applying and drying the TiO2 amorphous sol on a substrate to form a barrier layer; and applying and drying a composition formed by mixing particles of visible light responsive photocatalyst material with the TiO2 amorphous sol on the barrier layer, to form a photocatalyst layer.
Abstract:
Provided is a catalyst for exhaust gas purification, the catalyst comprising: a noble metal; an alumina support particle; and a ZrO2 semiconductor support particle deposited on a surface of the alumina support particle.
Abstract:
Disclosed is a method for preparing a photocatalyst, including: forming a porous film of the first metal oxide formed from a first metal oxide by a sol-gel process; heat-treating the porous film of the first metal oxide to crystallize the first metal oxide; dipping the porous film of the first metal oxide into a precursor solution of a second metal, followed by a photo-irradiation, such that ions of the second metal is to be penetrated inside pores of the porous film of the first metal oxide; and dipping the porous film of the first metal oxide containing the ions of the second metal inside the pores into a solution of alcohol, followed by a photo-irradiation, such that the ions of the second metal is to be reduced to form particles of the second metal inside the pores of the porous film of the first metal oxide.
Abstract:
Provided is a catalyst for purifying exhaust gas, comprising: noble metals; alumina support particles; and TiO2 semiconductor particles supported on the surfaces of the alumina support particles.
Abstract:
The present disclosure provides a visible light activated photocatalytic tile, comprising a porous ceramic tile; and a photocatalytic layer formed on one surface of the tile with a coating composition comprising an aqueous solvent and visible light activated photocatalytic particles.
Abstract:
A photocatalytic functional film has a structure of a substrate, a barrier layer and a photocatalytic layer stacked one on another. The barrier layer is a SiO2 film, the photocatalyst layer comprises an amorphous TiO2 film, and particles of visible light responsive photocatalytic material formed on the surface of the amorphous TiO2 film. A method for producing a photocatalytic functional film includes: adding an alcohol solvent and an acid to a silicate precursor to obtain a SiO2 sol by dehydration and de-alcoholization reaction; applying and drying the SiO2 sol on a substrate to form a barrier layer; adding an alcohol solvent and an acid to a titanium precursor to obtain a TiO2 amorphous sol by dehydration and de-alcoholization reaction; and applying and drying a composition formed by mixing particles of visible light responsive photocatalyst material with the TiO2 amorphous sol on the barrier layer, to form a photocatalyst layer.
Abstract:
Disclosed is a visible light-activated photocatalytic coating composition comprising a visible light active photocatalytic material and an aqueous solvent.
Abstract:
Disclosed is a visible light-activated photocatalytic coating composition comprising a visible light active photocatalytic material and an aqueous solvent.
Abstract:
The present invention relates to an LED photocatalyst module comprising: a light supplying unit for irradiating light onto a photocatalyst so that the photocatalyst is activated; a photocatalyst purifying unit disposed spaced apart from the light supplying unit and purifying polluted air; and a discharging unit disposed spaced apart from the photocatalyst purifying unit and sucking in the air purified by the photocatalyst purifying unit and discharging the air to the outside, wherein the photocatalyst purifying unit includes a ceramic honeycomb structure in which a plurality of photocatalyst pores, coated with the photocatalyst, are combined in a honeycomb pattern, and the photocatalyst includes a porous metal oxide film and metal particles formed on a surface of the porous metal oxide film.