▎ 摘　　要

NOVELTY - Synthesizing polyaniline/reduced graphene materials, comprises (i) analyzing and purifying aniline at 180 degrees C, dissolving aniline, sodium dodecylbenzene sulfonate, graphene and ammonium persulfate in hydrochloric acid solution, adding aniline acidic solution dropwise to ammonium persulfate solution and reacting; (ii) filtering the reaction solution, washing retentate with ethanol and deionized water respectively and drying in a drying box to obtain polyaniline/graphene powder; (iii) grinding and placing in a porcelain cup and calcining in a tube furnace filled with an inert gas at normal temperature, raising the temperature, maintaining, naturally cooling to room temperature, removing and grinding; (iv) adding to aqueous solution of sodium borohydride in ethanol, reacting at room temperature for 12 hours, solution after filtering the reaction completion of the reaction, washing retentate with ethanol and deionized water, respectively and drying in vacuum oven at 50 degrees C. USE - The material is useful in microbial fuel cell cathode (claimed) for adsorbing hexavalent chromium ions and treating heavy metal ions by reduction reaction. ADVANTAGE - The method can generate higher voltage in microbial fuel cell cathode. DETAILED DESCRIPTION - Synthesizing polyaniline/reduced graphene material comprises (i) analyzing and purifying aniline at 180 degrees C, dissolving aniline, sodium dodecylbenzene sulfonate, graphene and ammonium persulfate in hydrochloric acid solution, adding aniline acidic solution dropwise to ammonium persulfate solution and reacting at room temperature for 12 hours; (ii) filtering the reaction solution, washing the retentate with ethanol and deionized water respectively and drying at 50 degrees C in drying box to obtain polyaniline/graphene powder; (iii) grinding and placing in a porcelain cup and calcining in a tube furnace filled with an inert gas at normal temperature, raising the temperature to 800 degrees C at 5 degrees C /minute, maintaining at 800 degrees C for 2 hours, naturally cooling to room temperature, removing and grinding; (iv) adding to aqueous solution of sodium borohydride in ethanol, reacting at room temperature for 12 hours, filtering the reaction solution after completion of the reaction, washing retentate with ethanol and deionized water, respectively and drying in vacuum oven at 50 degrees C. An INDEPENDENT CLAIM is also included for use method of material in microbial fuel cell cathode, comprising (i) mixing synthesized polyaniline/reduced graphene material with a binding agent, coating on 2x 1 cm carbon cloth and assembling into a cathode chamber of a microbial fuel cell; and (ii) using a double-chamber structure by the microbial fuel, separating the two chambers by a proton exchange membrane and loading acidic potassium dichromate and the anode microbial growth liquid in the corresponding anode and anode chambers for cultivation.