▎ 摘　　要

NOVELTY - Preparing graphene nano-cavitation microspheres comprises (1) dissolving the paraffin and emulsifier in the aqueous phase solvent, and stirring at a constant temperature and rotating speed for a certain period of time to form a stable oil-in-water emulsion, where the precipitate after centrifugation at room temperature is paraffin microcapsules, (2) dispersing graphene in tetrahydrofuran solution and mixing with degassed water, reacting for a certain period of time, and removing the tetrahydrofuran by solvent evaporation to obtain a stable graphene solution dispersed in water, and (3) mixing the paraffin microcapsules with the graphene solution, fully stirring and then filtering, wrapping the graphene nanosheets on the paraffin surface, and finally drying at 60°C, using the paraffin capsules as a sacrificial layer to be heated and melted to remove to obtain hollow graphene nanocavitation microspheres. USE - The method is useful for preparing graphene nano-cavitation microspheres. ADVANTAGE - The graphene nanocavitation microspheres has broad spectrum and high adsorption capacity for various metal ions and soluble organic substances with fast adsorption rate.