Exact Title of Paper: PREPARATION OF GRAPHENE OXIDE-ENHANCED POROUS CARBON AND ITS GAS ADSORPTION PROPERTIES

摘要

The graphene oxide-enhanced porous carbon was synthesized by a one-step method of activation with low cost. The morphology and porous properties of the composite porous carbon was evaluated by N_2 adsorption-desorption and scanning electron microscopy (SEM), while chemical property was determined by Raman spectroscopy. The prepared composite porous carbon exhibits a high Brunauer-Emmett-Teller (BET) specific surface area (SSA) (3140.61 m~2 g~(-1)) with the average pore size at 2.51 nm. The composite porous carbon shows excellent adsorption capabilities for CH_4 (6.87 mmol g~(-1)) and N_2 (3.98 mmol g~(-1)) in the environmental temperature of 303 K. and 3 MPa ambient pressure. Furthermore, the obtained composite porous carbon possesses a much higher CH4/N2 separation coefficient (2.83) compared to the traditional activated carbon. Porous carbon; Graphene; Adsorption; Separation coefficient