| abstract |
The present invention relates to a method for producing activated carbon, more specifically, preparing graphene oxide by a chemical exfoliation process using a carbon source and an acid; graphene oxide and residual after the step of preparing the graphene oxide Separating the graphene oxide and the residual carbon source from a crude product including water; putting the separated residual carbon source into a reactor, and raising the temperature to a temperature of 800° C. or higher; And maintaining the elevated temperature while supplying steam. |