▎ 摘　　要

NOVELTY - Invention relates to chemical engineering, particularly to production of graphene-based nanocomposite sorption material. Materials can be used as sorbents, catalyst supports, electrode materials in sensors. According to the invention, graphene oxide and ferric iron compounds are mixed in an aqueous solution, the obtained mixture is treated at boiling point. After cooling and neutralization, reduction with ascorbic acid is carried out. Obtained material is treated with isopropanol in supercritical conditions. USE - Chemistry. ADVANTAGE - Invention provides high adsorption capacity of the nanocomposite material when extracting organic dyes from the solution. 1 cl, 8 dwg, 2 tbl