| 초록 |
In this work, surface characteristics of physical activation and chemical treatment carbonized cellulose were studied for lithium ion in aqueous solution. From the results, it was observed steam activation that have influence on the development of new pores and expansion of pore sizes. In addition, the chemical treatments introduced functional groups onto the carbonized cellulose surfaces. The amount of lithium ion recovery was enhanced by physical activation and chemical treatment and we characterized lithium ion adsorption-desorption efficiency. The structure and morphology of composite were examined by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS). The specific surface area of the composites was calculated from N2/77K adsorption/desorption isotherms by the Brunauer-Emmett-Teller (BET) equation. Adsorption-desorption capacities of lithium ion were examined by AAS (AA-SCANI; Thermo Jarrell Ash Co.) |
