▎ 摘　　要

NOVELTY - The preparation of manganese dioxide/graphene composite mesoporous nanospheres, involves dispersing graphene encapsulated by inert nano-oxide in mixed aqueous solution containing cetyltrimethylammonium bromide and sodium hydroxide, ultrasonically reacting, adding manganese tetrahydrate, dripping sodium hydroxide solution to adjust pH value to 10-11, hydrothermally reacting, cooling, adding reducing agent ethylene glycol to react, and centrifugally washing the product with absolute ethanol and deionized water, and drying. USE - Preparation of manganese dioxide/graphene composite mesoporous nanospheres (claimed). ADVANTAGE - The method enables preparing manganese dioxide/graphene composite mesoporous nanospheres by simple and easy process, the manganese oxide nanoparticles are uniformly dispersed on reduced graphene oxide, the average particle size of mesoporous nanospheres is about 500-800 nm, and the anticorrosive performance of the epoxy coating is improved. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for composite mesoporous nanosphere, which includes manganese dioxide nanoparticles dispersed on graphene encapsulated by inert nano oxide, where the particle size is 500-800 nm.