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Chairunnisa,Takata N.,Thu K.,Miyazaki T.,Nakabayashi K.,Miyawaki Jin 한국탄소학회 2021 Carbon Letters Vol.31 No.4
Preparation of activated carbon from biomass residue with conventional steam activation was conducted to fnd the alternative raw materials for meeting the high demand for low-cost porous material in the desiccant application. In this study, activated carbons were produced from dead camphor leaves using two-step methods at diferent preparation temperatures. The characterization results revealed that the prepared activated carbons have a surface area of 700 m2 /g, with 75% of microporosity. The water vapor sorption study reported that the water uptake of camphor leaf-based activated carbons was strongly afected by the pore properties of the materials. Moreover, from the water adsorption kinetics, it was observed that the rate constant of adsorption was varied at each relative pressure, which can be assumed that the water adsorption mechanism is diferent at each relative pressure. From these results, it was revealed that the prepared camphor leaf-based activated carbons have a promising ability to adsorb water vapor from humid air.