METHOD FOR PRODUCING PHOTOCATALYST BASED ON HIGHLY POROUS NANOSTRUCTURED MONOLITHIC ALUMINUM OXIDE LINED WITH NON-AGGLOMERATED QUANTUM DOTS, AND METHOD FOR SYNTHESIZING ZnCdS QUANTUM DOTS Russian patent published in 2023 - IPC C01F7/21 B01J37/02 B01J37/08 B01J21/04 B01J27/04 B01J35/10 C09K11/54 C09K11/56 B82Y30/00 B82Y40/00 

FIELD: chemical industry; medicine; environmental protection.

SUBSTANCE: used in the manufacture of photocatalysts for the decomposition of toxic organic substances that pollute water and air. First at 130°C mixture of Zn and Cd precursors is prepared from their acetates in the presence of oleic acid in an organic solvent. Separately at 135°C solution of sulfur is prepared in an organic solvent in an inert atmosphere. When preparing these solutions, dibenzyl ether is used as an organic solvent. Then to a mixture of Zn and Cd precursors in an inert atmosphere at 280°C Oleylamine and the resulting sulfur solution are successively added and stirred at 260°C, cool, add ethanol to form a precipitate, which is reprecipitated and dispersed in cyclohexane. After this, a solution of NiCl₂ in ethanol is added to the dispersion, purged with argon and illuminated with a quartz lamp while stirring. The resulting Zn_0.5Cd_0.5S quantum dots, doped with 10 wt.% nickel, are precipitated with ethanol and dispersed in cyclohexane. Highly porous nanostructured monolithic aluminum oxide hydrate is synthesized by exposure to air at 25°C and humidity 70% onto an aluminum surface coated with mercury-silver amalgam with a silver content of no more than 17 at.%. Then the resulting aluminum oxide hydrate is heat treated at 1000°C to dehydrate it, it is impregnated with the above dispersion of quantum dots in cyclohexane and dried in air.

EFFECT: resulting photocatalyst based on highly porous nanostructured monolithic aluminum oxide lined with 10 wt.% non-agglomerated Zn_0.5Cd_0.5S quantum dots doped with nickel has high photocatalytic activity.

7 cl, 3 dwg, 4 ex