▎ 摘　　要

NOVELTY - The utility model claims a single-layer, efficiency of graphene preparation device, comprising a reaction device, a feeding port, a stirring motor, a porous film (A), a collection device, a vacuum pump, a porous film (B), a recycling device, a circulating pipe. The graphene preparation device is composed of a reaction device, a collecting device and a recycling device is composed of three parts, the whole device is rectangular. The reaction device is provided with a feeding port and a stirring motor, a reaction device and a collecting device are separated by porous membrane; the collecting device is provided with a vacuum pump, separated by porous film between the collecting device and a recycling device, the recycling device is provided with a vacuum pump and a circulating pipe; the circulating pipe of the recycling device is connected with the reaction device.