| 초록 |
In this work, the oxygen plasma treatment of activated carbon fibers (ACFs) was carried out to introduce acidic functional groups on carbon surfaces. Surface properties of the ACFs were determined by X-ray photoelectron spectroscopy and scanning electron microscope. N2/77K adsorption isotherms were investigated by BET and D-R plot methods to characterize the specific surface areas, pore volumes, and pore size distribution. The hydrogen storage behaviors of plasma-treated ACFs were studied by using PCT apparatus at moderate pressure and temperature. From the results, the surface of ACFs showed large oxygen content after the treatment, resulting in the increase in hydrogen adsorption capacity of the ACFs. |
