Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Preparation of Activated Carbon Fiber Adsorbent for Low Level CO2

저농도 이산화탄소 포집을 위한 초미세 탄소섬유 흡착제 제조 연구

  • Kim, Dong Woo (Department of Environmental Science and Engineering, Kyung Hee University) ;
  • Jung, Dong Won (Department of Environmental Science and Engineering, Kyung Hee University) ;
  • Jo, Young Min (Department of Environmental Science and Engineering, Kyung Hee University)
  • 김동우 (경희대학교 환경응용과학과) ;
  • 정동원 (경희대학교 환경응용과학과) ;
  • 조영민 (경희대학교 환경응용과학과)
  • Received : 2016.11.26
  • Accepted : 2016.12.19
  • Published : 2017.02.28
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Abstract

Adsorption is a plausible technology using solid adsorbents for dry capture of carbon dioxide ($CO_2$). In general, narrow size distribution of tiny pores and surface chemical functionalities of solid adsorbents enhance the adsorption capacity of gaseous $CO_2$ molecules. In order to utilize the advantages of fibrous adsorbents, this work prepared activated carbon nanofibers (ACNFs) via the electrospinning process using a polymer precursor of polyacylonitrile (PAN). The spun fibers were 390 nm to 580 nm in thickness with an average surface area of $27.3m^2/g$. The surface structure was improved by a programmed thermal activation at $800^{\circ}C$ in $CO_2$ atmosphere. It was also found that the nitrogen-groups including pyrrole and pyridine were created during the activation facilitaing the selective adsorption as forming enhanced active sites. The finally obtained adsorption capacities were 2.74 mmol/g for pure $CO_2$ flow and 0.74mmol/g for 3000 ppm.

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References

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