METHOD FOR PRODUCING BROMINED GRAPHENE BASED ON GRAPHENE OXIDE MODIFICATION Russian patent published in 2023 - IPC C01B32/192 B82Y30/00 

FIELD: carbon nanomaterials.

SUBSTANCE: methods for producing chemically modified graphene derivatives for microelectronics and sensors devices. The method for producing brominated graphene involves treating graphene oxide with an aqueous solution of hydrobromic acid with stirring, keeping the resulting suspension, then cooling it, washing it successively with deionized water and isopropyl alcohol, and removing the washing liquid from the suspension to obtain intermediate brominated graphene powder. Treatment of graphene oxide with a solution of hydrobromic acid is carried out in an autoclave for 40-52 hours at a temperature of 180-250°C, and the intermediate brominated graphene powder is treated with elemental bromine vapor in a closed vessel for 60-80 hours to obtain brominated graphene.

EFFECT: increased concentration of covalently bound bromine in the resulting material with a reduced proportion of other functional groups and an increased average size of the resulting CMG particles.

5 cl, 9 dwg, 1 ex