| 초록 |
The scope of this work was studied about pore sizes of activated carbon using different concentrations of phosphoric acid treatment and investigated the relation between pore sizes and hydrogen adsorption capacity. The A-GNFs were characterized by XRD, FE-TEM and nitrogen adsorption/desorption at 77K. The hydrogen adsorption capacity was measured by H2 isothermal adsorption at 77 K. In the result, the specific surface area and micropore volume of all of the treated samples were slightly decreased due to the micropore filling and pore collapsing behaviors. But that the hydrogen storage capacity was increased by the acidic characteristics of activated carbon surfaces, resulting in enhanced electron acceptor-donor interaction at interfaces. |
