▎ 摘　　要

NOVELTY - Preparing graphene material functionalized by ionic liquid which is brominated 1-(3-aminoethyl)-3-methyl imidazole or 1-(3-aminopropyl)-3-methylimidazole, comprises: dispersing graphene oxide in secondary water, ultrasonically dispersing, centrifuging to remove the undispersed oxide to obtain yellow solution; dissolving ionic liquid in the mixed solution, ultrasonically reacting to obtain a black dispersion solution; and centrifugally separating the dispersion solution, washing the centrifuged solid by using secondary water until the filtrate turns to neutral and drying in vacuum. USE - The method is useful for preparing graphene material functionalized by ionic liquid. ADVANTAGE - The method is simple and feasible, and provides the graphene material, which has better dispersion and dissolubility in the organic and inorganic solvents. DETAILED DESCRIPTION - Preparing graphene material functionalized by ionic liquid which is brominated 1-(3-aminoethyl)-3-methyl imidazole or 1-(3-aminopropyl)-3-methylimidazole, comprises: dispersing graphene oxide in secondary water with a proportion of graphene oxide to secondary water to the ionic liquid is 1:4:0.5-10 (g:ml:g), ultrasonically dispersing at 20-90 degrees C for 1-10 hour, centrifuging at a speed of 5000 revolutions/minute to remove the undispersed oxide to obtain the yellow solution; dissolving ionic liquid in the mixed solution, ultrasonically reacting at 20-90 degrees C for 1-10 hour to obtain the black dispersion solution; and centrifugally separating the dispersion solution at a speed of 6000-12000 revolutions/minute, washing the centrifuged solid by using secondary water until the filtrate turns to neutral, and then drying in vacuum below 60 degrees C to obtain the graphene material.