▎ 摘　　要

NOVELTY - Preparing graphene/ferrosoferric oxide composite microsphere comprises adding ferric nitrate and citric acid with a deionized water and then stirring to obtain clear solution, ultrasonically dispersing graphene oxide to obtain mixed solution, adding the mixed solution into an atomizing device, and reacting the mixture with nitrogen or argon gas into a tubular furnace, and absorbing. USE - The graphene/ferrosoferric oxide composite microsphere is useful for treating sewage. ADVANTAGE - The method provides composite microsphere with excellent adsorption capacity, magnetic performance and reduced temperature in a simple manner.