▎ 摘　　要

NOVELTY - Preparing graphene and tin oxide hollow ball composite nano material comprises (a) adding deionized water to potassium stannate trihydrate to obtain potassium sulfate aqueous solution, mixing the urea and ethanol solution to obtain urea solution, mixing the potassium sulfate aqueous solution with the urea solution, ultrasonic processing to form mixed solution, (b) dispersing the graphene oxide into de-ionized water, adding the mixed solution prepared in step A and stirring uniformly, obtaining intermediate solution, (c) transferring the intermediate solution to the high pressure stainless steel reaction kettle with the polytetrafluoroethylene as the internal lining, (d) after finishing reaction, quickly introducing the high pressure reaction kettle into ice water to quench, washing the cooled liquid by de-ionized water and absolute ethyl alcohol and vacuum drying to obtain the G/SnO2 hollow ball composite nano material. USE - The method is useful for preparing graphene and tin oxide hollow ball composite nano material.