▎ 摘　　要

NOVELTY - Preparing polyaniline/graphene/manganese dioxide ternary composite hollow microspheres involves preparing graphene oxide modified by manganese dioxide, dispersing graphene oxide in an aqueous ethanol solution to form a graphene oxide dispersion, dissolving manganese sulfate hydrate and potassium magnate in water separately, adding manganese sulfate hydrate solution dropwise to the graphene oxide dispersion under stirring conditions, adding potassium manganate aqueous solution dropwise to the graphene oxide dispersion after a period of time, continuing for a period of time at room temperature, and washing with suction to obtain manganese dioxide modified graphene oxide, dispersing the manganese dioxide modified graphene oxide prepared in water as an aqueous phase, dissolving the aniline monomer in an organic solvent to form an oil phase. USE - Method for preparing polyaniline/graphene/manganese dioxide ternary composite hollow microspheres. ADVANTAGE - The method enables to prepare polyaniline/graphene/manganese dioxide ternary composite hollow microspheres, in simple manner under mild condition. DETAILED DESCRIPTION - Preparing polyaniline/graphene/manganese dioxide ternary composite hollow microspheres involves preparing graphene oxide modified by manganese dioxide, dispersing graphene oxide in an aqueous ethanol solution to form a graphene oxide dispersion, dissolving manganese sulfate hydrate and potassium manganate in water separately, adding manganese sulfate hydrate solution dropwise to the graphene oxide dispersion under stirring conditions, adding potassium manganate aqueous solution dropwise to the graphene oxide dispersion after a period of time, continuing for a period of time at room temperature, and washing with suction to obtain manganese dioxide modified graphene oxide, dispersing the manganese dioxide modified graphene oxide prepared in water as an aqueous phase, dissolving the aniline monomer in an organic solvent to form an oil phase, mixing the two and emulsify with a homogenizer to obtain an oil-in-water pickering emulsion, placing the oil-in-water pickering emulsion prepared in an ice-water bath for 20-60 minutes, adding dropwise the ammonium persulfate hydrochloric acid solution that has also been ice-bathed, and reacting in the ice-water bath for 20-28 hours. The product is washed, freeze-dried and electrochemically reduced to obtain product.