PHOTOCATALYTIC MATERIAL, PHOTOCATALYTIC COMPOSITION USING SUCH MATERIAL AND PHOTOCATALYTIC PRODUCT Russian patent published in 2011 - IPC B01J23/30 B01D53/86 A61L9/00 B01J21/06 C02F1/30 A61L9/18 

FIELD: chemistry.

SUBSTANCE: invention relates to photocatalytic materials and use thereof. Described is a photocatalytic material containing tungsten oxide powder as the main component, having average particle diametre of 0.5 mcm or less and essentially containing monoclinic crystals excited by a light source which emits light having wavelength between 430 and 500 nm, with peak wavelength 460 nm ±10 nm. The photocatalytic material has decomposing capacity of 50% or more, where this decomposing capacity is determined by the following equation, based on the following decomposing capacity test: 1 g of tungsten oxide powder and 20 mln^-1 acetaldehyde (amount A) are put into a 3 litre air-tight glass container and acetaldehyde (amount B) is measured after exposing the mixture to light with peak wavelength 460 nm ±10 nm for 2 hours so as to measure decomposing capacity (%): decomposing capacity (%)=[(acetaldehyde amount A - acetaldehyde amount B)/acetaldehyde amount A] × 100. Described also is a photocatalytic material containing tungsten oxide micro-particles as the main component, having average particle diametre of 0.5 mcm or more and essentially containing monoclinic crystals excited by exposure to blue light with peak wavelength 460 nm ±10 nm. The photocatalytic material has acetaldehyde residual level of 50% or less in accordance with the following equation, based on the following decomposing capacity test: 1 g of tungsten oxide powder and 10 mln^-1 acetaldehyde are put into a 3 litre air-tight glass container and acetaldehyde is measured after exposing the mixture to light with peak wavelength 460 nm ±10 nm for 30 minutes so as to measure acetaldehyde residual level (%): residual level (%)=[( 10 mln^-1 - amount of acetaldehyde remaining after 30 minutes)/10 mln^-1] × 100. Described is a photocatalytic composition for decomposing at least one of organic materials NO_x and SO_x, containing the photocatalytic material described above in amount of 50 wt % or more and a photocatalytic product of its use in photocatalytic products.

EFFECT: obtaining photocatalytic material having high catalytic effect for decomposing at least one of organic materials NO_x and SO_x.

15 cl, 6 tbl, 29 dwg, 15 ex