▎ 摘　　要

NOVELTY - The method involves dissolving graphene oxide in ethanol and then stirring to disperse fully, allowing solution to react, adding organic diamine to obtained solution and then stirring, subjecting obtained mixture to suction filtration, washing filtrate with deionized water until filtrate gets neutralized, placing filter cake in vacuum oven and then heating, and drying the obtained product for 6 hours to obtain organic diamine modified graphene oxide solid catalyst. USE - The method is useful for preparing organic diamine modified graphene oxide solid catalyst, which is useful in Knoevenagel condensation (claimed). ADVANTAGE - The method is capable of easily preparing organic diamine modified graphene oxide solid catalyst with improved catalytic effect, storage stability and recyclability in an economical and environmentally-friendly manner. DETAILED DESCRIPTION - The method involves dissolving certain amount of graphene oxide in ethanol at a ratio of 1:100-1:500 and then stirring to disperse fully, allowing the solution to react at 0-20 degrees C, slowly adding organic diamine to the obtained solution in a ratio of 1:10-1:50 and then stirring for 1-24 hours, subjecting the obtained mixture to suction filtration, washing the filtrate with deionized water until the filtrate is neutralized, placing the filter cake in a vacuum oven and then heating at 40 degrees C and a pressure of 10 Pa, drying the obtained product for 6 hours to obtain organic diamine modified graphene oxide solid catalyst.