▎ 摘　　要

NOVELTY - The preparation method of graphene aerosol microspheres involves preparing graphene oxide solution, adding ethylenediamine solution, heating and refluxing, centrifuging, washing, and vacuum drying to obtain graphene powder, adding into water, ultrasonically processing to obtain graphene dispersion, dissolving Span-80 (RTM: Sorbitan monooleate) surfactant in n-hexane, n-heptane, n-octanol, ethyl acetate, or toluene to prepare external phase fluid, preparing collecting liquid same as external phase fluid, and injecting internal and external phase fluid into an injector. USE - Preparation method of graphene aerosol microspheres (claimed). DETAILED DESCRIPTION - The preparation method of graphene aerosol microspheres involves (1) using modified Hummers method to obtain graphene oxide solution with a certain concentration, adding an excess amount of ethylenediamine solution, heating and refluxing at 80 degrees C for 24 hours, centrifugally separating, washing with ethanol and water, and vacuum drying at 60 degrees C to obtain graphene powder, adding the prepared 0.05-3 g graphite powder into 100 ml water, ultrasonically processing by an ultrasonic cleaner with 300 W for 2 hours to obtain graphene dispersion with concentration of 0.5-30 mg/ml as internal phase fluid, dissolving Span-80 (RTM: Sorbitan monooleate) surfactant with concentration of 2.5 %mass in n-hexane, n-heptane, n-octanol, ethyl acetate, or toluene to prepare external phase fluid, and preparing collecting liquid same as external phase fluid, (2) injecting the internal phase fluid and external phase fluid into an injector of self-made glass capillary micro-fluidic device, respectively adjusting the flow rate of the internal phase fluid to 2 mu l/minute and the flow rate of the external phase fluid to 10-100 mu l/minute, forming the monodispersed water/oil emulsion in a collecting pipe, and collecting and freezing the collecting liquid in liquid nitrogen into graphene ice ball, and (3) filtering the generated graphene ice ball, and freeze-drying for 24 hours.