▎ 摘　　要

NOVELTY - Preparing tin(IV) oxide-molybdenum disulfide (SnO2-MoS2) modified graphene aerogel comprises (i) performing aminated modification of graphene with diethylenetriamine to obtain aminated graphene, (ii) adding diethylenetriamine, N,N-methylenebisacrylamide, and aminated graphene to methanol solvent, dispersing ultrasonically and uniformly, reacting, removing the solvent by rotary evaporation, and washing and drying to obtain hyperbranched polyamidoamine functionalized graphene, (iii) adding sodium hydroxide to the solvent of deionized water, dispersing uniformly by ultrasonic, and adding aqueous solution of stannous chloride dropwise while ultrasonic treatment, adding sodium fluoride and the surfactant hexadecyl trimethyl ammonium bromide, dispersing uniformly by ultrasonic, and placing in the reaction kettle, hydrothermally reacting, cooling, centrifugally separating, washing and drying to obtain fluorine-doped tin oxide nanoflowers, and (iv) adding thioacetamide, and sodium molybdate. USE - The method is useful for aerogel is useful for sewage treatment (claimed). ADVANTAGE - The graphene: has ultra-high specific surface area, rich amino groups and hydrogen bonds, and a large number of cavity structures; is excellent to the adsorption of more organic dyes e.g. methyl orange; and utilizes F doping to promote red shift of the SnO2 absorption band edge. The method: broadens the light absorption range; promotes the separation of photogenerated electrons and holes; and utilizes strong oxidizing superoxide anions and hydroxy radicals to oxidize organic dyes e.g. methyl orange into small molecules. DETAILED DESCRIPTION - Preparing tin(IV) oxide-molybdenum disulfide (SnO2-MoS2) modified graphene aerogel comprises (i) performing aminated modification of graphene with diethylenetriamine to obtain aminated graphene, (ii) adding diethylenetriamine, N,N-methylenebisacrylamide, and aminated graphene to methanol solvent, dispersing ultrasonically and uniformly, reacting, removing the solvent by rotary evaporation, and washing and drying to obtain hyperbranched polyamidoamine functionalized graphene, (iii) adding sodium hydroxide to the solvent of deionized water, dispersing uniformly by ultrasonic, and adding aqueous solution of stannous chloride dropwise while ultrasonic treatment, adding sodium fluoride and the surfactant hexadecyl trimethyl ammonium bromide, dispersing uniformly by ultrasonic, and placing in the reaction kettle, hydrothermally reacting, cooling, centrifugally separating, washing and drying to obtain fluorine-doped tin oxide nanoflowers, (iv) adding thioacetamide, sodium molybdate, and fluorine-doped tin oxide nanoflowers to the deionized water solvent, and dispersing uniformly by ultrasonic, carrying out the hydrolysis reaction, adding ethanol to promote dispersion, precipitating the product with dilute hydrochloric acid, centrifuging, washing and drying, placing the dried product in a tubular furnace, calcining and cooling to obtain nano-flowers of fluorine-doped tin oxide modified with hollow molybdenum disulfide balls, and (v) adding molybdenum disulfide hollow spheres modified fluorine-doped tin oxide nanoflowers and hyperbranched polyamidoamine functionalized graphene to the deionized water solvent, and uniformly dispersing by ultrasonic, placing in a reaction kettle, hydrothermally reacting, and freeze-drying to obtain the finished product.