▎ 摘　　要

NOVELTY - Synthesizing graphene by using hydrothermal reaction, comprises: e.g. dispersing montmorillonite and glucose in a weight ratio of 1:1 plus minus 0.1 in a mixture of water and ethanol in a volume ratio of 2:1; placing the homogeneous mixture in an autoclave and heating to a temperature of 180-200 degrees C for 12-48 hours; and drying the resulting material at a temperature of 100 degrees C and then annealing in a furnace under an inert atmosphere for 4-6 hours. USE - The process is useful for synthesizing graphene by using hydrothermal reaction. DETAILED DESCRIPTION - Synthesizing graphene by using hydrothermal reaction, comprises: dispersing montmorillonite and glucose in a weight ratio of 1:1 plus minus 0.1 in a mixture of water and ethanol in a volume ratio of 2:1; placing the homogeneous mixture in an autoclave and heating to a temperature of 180-200 degrees C for 12-48 hours; drying the resulting material at a temperature of 100 degrees C and then annealing in a furnace under an inert atmosphere for 4-6 hours; removing the montmorillonite using concentrated solutions of sodium hydroxide or hydrofluoric acid, and further purifying the obtained flakes of graphene with concentrated hydrochloric acid; and curing the material in an oven at a temperature of 800-1000 degrees C, using an inert gas, argon or nitrogen. The step of removing montmorillonite and purification of flakes of graphene are carried out by long-term dispersion of the flakes of graphene and subsequent separation by filtration or centrifugation.