METHOD OF FORMING PHOTOCATALYTIC COATING BASED ON STRONTIUM BISMUTHATE ON GLASS-CERAMIC SUPPORT Russian patent published in 2024 - IPC B01J23/18 C01G29/00 B01J23/02 

FIELD: chemistry.

SUBSTANCE: invention relates to development of environmentally safe photocatalytic functional materials. Disclosed is a method of forming a photocatalytic coating based on strontium bismuthate on a glass-ceramic support, involving preparation of a precursor solution in the form of organic complexes, characterized by that bismuth nitrate pentahydrate is used to prepare the precursor solution Bi(NO₃)₃⋅5H₂O and strontium nitrate Sr(NO₃)₂; mixture of nitrates is ground with sorbitol in weight ratio selected from 4.62:1; 4.05:1; 6.59:1; 7.70:1; 7.92:1; 6.93:1, wherein grinding is carried out to obtain a homogeneous transparent viscous substance using a solvent; applying a precursor solution on a silicate carrier by dipping it into a prepared solution until uniform impregnation, performing subsequent air drying to obtain a film on the surface of the silicate carrier; then step-by-step annealing of the silicate carrier coated with the precursor film is carried out at temperature of 350 °C for 3 hours until complete removal of the organic component of the precursor, and then in a mode selected from: temperature 500 °C - 5 hours, temperature 600 °C - 5.5 hours or temperature 600 °C - 6 hours, heated to form a layer of photocatalytic coating of strontium bismuthate.

EFFECT: improved photocatalytic coating by creating a bismuth photocatalytic coating based on strontium bismuthate on the surface of a silicate carrier.

3 cl, 1 dwg, 1 tbl, 6 ex