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동향자료
저자정보
Bai, Byong-Chol (Department of Green Energy Technology, Chungnam National University) Kim, Jong-Gu (Department of Fine Chemical Engineering and Applied Chemistry, BK21-E2M, Chungnam National University) Im, Ji-Sun (Department of Fine Chemical Engineering and Applied Chemistry, BK21-E2M, Chungnam National University) Jung, Sang-Chul (Department of Environmental Engineering, Sunchon National University) Lee, Young-Seak (Department of Green Energy Technology, Chungnam National University)
저널정보
한국탄소학회 Carbon letters Carbon letters 제12권 제4호
발행연도
2011.1
수록면
236 - 242 (7page)

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The oxyfluorination effects of activated carbon nanofibers (OFACFs) were investigated for $CO_2$ storage. Electrospun CFs were prepared from a polyacrylonitrile/N,N-dimethylformamide solution via electrospinning and heat treatment. The electrospun CFs were chemically activated in order to generate the pore structure, and then oxyfluorination was used to modify the surface. The samples were labeled CF (electrospun CF), ACF (activated CF), OFACF-1 ($O_2:F_2$ = 7:3), OFACF-2 ($O_2:F_2$ = 5:5) and OFACF-3 ($O_2:F_2$ = 3:7). The functional group of OFACFs was investigated using X-ray photoelectron spectroscopy analysis. The C-F bonds formed on surface of ACFs. The intensities of the C-O peaks increased after oxyfluorination and increased the oxygen content in the reaction gas. The specific surface area, pore volume and pore size of OFACFs were calculated by the Brunauer-Emmett-Teller and density functional theory equation. Through the $N_2$ adsorption isotherm, the specific surface area and pore volume slightly decreased as a result of oxyfluorination treatment. Nevertheless, the $CO_2$ adsorption efficiency of oxyfluorinated ACF improved around 16 wt% due to the semi-ionic interaction effect of surface modificated oxygen functional groups and $CO_2$ molecules.

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