| 초록 |
Rayon-based activated carbon fibers (ACFs), on which copper has been introduced by an electroplating technique, were used to remove hydrochloride. Surface properties of the ACFs were determined by X-ray diffraction (XRD) and scanning electron microscope (SEM). N2 adsorption isotherms at 77K were investigated by BET and D-R plot methods to characterize the specific surface areas and pore volumes. And hydrochloride removal efficiency was confirmed by a detecting tube technique. As experimental results, the copper content on the ACFs increased with plating time. However, the adsorption properties, such as specific surface area and total pore volume, were slightly decreased in the presence of copper. The hydrochloride removal efficiency of all copper/ACFs was higher than that of untreated ACFs and was increased with copper content. However, the decrease of the efficiency in the hydrochloride removal was shown in the excessively copper-plated ACFs as a consequence of the blocking of micropores in the ACFs, resulting in the decrease of specific surface areas and pore volumes. Consequently, the optimal copper content with well-developed micropores of the ACFs was essentially important in the control of the hydrochloride removal over the copper/ACFs.
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