▎ 摘　　要

NOVELTY - Increasing loaded amount of solid ionic liquid on a graphene oxide surface comrpises e.g. (i) adding graphene oxide into a hydrochloric acid or sulfuric acid solution and sonicating, (ii) adding siloxane-containing ionic liquid into the above reaction system and stirring at 30-50 degrees C for 10-12 hours, where ionic liquid is 1-(3-(trihydroxysilyl)propyl)pyridin-1-ium compound (I) or 1-methyl-3-(3-(trihydroxysilyl)propyl)-1H-imidazol-3-ium compound (II), and (iii) separating the reaction solution by centrifugation, washing using deionized water, and drying. USE - The method is useful for increasing loaded amount of solid ionic liquid on a graphene oxide surface. ADVANTAGE - The method: has simple preparation process, and low production cost. DETAILED DESCRIPTION - Increasing loaded amount of solid ionic liquid on a graphene oxide surface comrpises (i) adding graphene oxide into a hydrochloric acid or sulfuric acid solution and sonicating for 30 minutes, where the mass ratio between graphene oxide and hydrochloric acid or sulfuric acid solution is 1:100-1:200, and the concentration of hydrochloric acid or sulfuric acid solution is 10-120 mmol/l, (ii) adding siloxane-containing ionic liquid into the above reaction system and stirring at 30-50 degrees C for 10-12 hours, where the mass ratio between ionic liquid and graphene oxide is 1:5-1:10, and the ionic liquid is 1-(3-(trihydroxysilyl)propyl)pyridin-1-ium compound of formula (I) or 1-methyl-3-(3-(trihydroxysilyl)propyl)-1H-imidazol-3-ium compound of formula (II), and (iii) separating the reaction solution by centrifugation, washing using deionized water, and drying to obtain supported ionic liquid catalyst sample. R = CH3 or C2H-5; R1 = CH3 or C2H5; and X(-) = chloro or bromo.