▎ 摘 要
Electric Discharge Method (EDM) was used to prepare graphene in deionized water which CO2 had been dissolved in advance. According to law of mass conservation, the chemical equation of EDM was balanced to prove the component was graphene. Tyndall effect, ultraviolet-visible spectroscopy (UV-Vis), Zetasizer, Transmission Electron Microscope and Raman were used for the identification of graphene. Then the impact of CO2 concentration on graphene preparation was discussed. The results showed that carbon atoms assemble into forming graphene. And zeta potential of graphene was - 31.6 mV, which indicated good suspension of graphene.