▎ 摘　　要

NOVELTY - Preparing iron-containing compound modified reduced graphene oxide (rGO) nano-complex with different appearances and crystalline phases involves (a) weighing 0.19 g thiourea and 0.675 g anhydrous iron chloride, respectively dissolving in 5 ml water, mechanically stirring until the solid is completely dissolved, (b) dispersing 42 mg rGO powder in 7.5 ml ultra-pure water to form uniform suspension, pouring the thiourea solution into rGO suspension under ice bath ultrasonic, gradually adding alkali solution until the pH value of the mixed solution reaches 3-12 and (c) transferring the mixture into the high pressure reaction kettle of 100 ml polytetrafluoroethylene lining, screwing, placing reaction kettle in the oven of 50 revolutions/minute, reacting at a certain temperature, cooling to room temperature, centrifuging the obtained product, and using ultra-pure water to wash and drying the product. USE - The nano-complex is useful as an anode modification material for microbial fuel cells (claimed). ADVANTAGE - The nano-complex has different shapes and crystal phases, good conductivity, good biological compatibility, excellent extracellular electron transfer ability, and good biocompatibility. The method: is simple and has easy operation and high efficiency.