Impact reaction preparation device and preparation method of graphene

The invention discloses an impact reaction preparation device and preparation method of graphene, and relates to the field of graphene preparation. The device comprises a sample box and a cooling member. The method comprises the following steps: S1, preparing an impact mixture, placing the impact mixture in a sample space of a sample box, and keeping a low-temperature state; S2, driving a flyer to impact the sample box at a high speed to obtain powder A; S3, performing acid pickling purification on the powder A, and performing suction filtration to obtain turbid liquid B; and S4, drying the turbid liquid B to obtain graphene powder. Through a cooling liquid diversion design, the whole device including the impact mixture is kept in a low-temperature state for a long time, volatilization of solid carbon sources such as dry ice is effectively controlled, the graphene conversion rate of the dry ice is improved, the carbon sequestration efficiency of the method is enhanced, the output is greatly improved, and the