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Author

Kim, Kwang S.
Center for Superfunctional Materials (CSM)
Research Interests
  • Theoretical/experimental nanosciences, molecular electronics spectroscopy, energy materials

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Highly selective CO2 capture by S-doped microporous carbon materials

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Title
Highly selective CO2 capture by S-doped microporous carbon materials
Author
Seema, HumairaKemp, K. ChristianLe, Nhien H.Park, Sung-WooChandra, VimleshLee, Jung WooKim, Kwang S.
Keywords
Adsorption capacities; Adsorption selectivity; Micro-porous carbons; N-doped; S-doped; Surface area; Synthesized materials
Issue Date
201401
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
CARBON, v.66, no., pp.320 - 326
Abstract
S-doped microporous carbon materials were synthesized by the chemical activation of a reduced-graphene-oxide/poly-thiophene material. The material displayed a large CO2 adsorption capacity of 4.5 mmol g-1 at 298 K and 1 atm, as well as an impressive CO2 adsorption selectivity over N2, CH4 and H2. The material was shown to exhibit a stable recycling adsorption capacity of 4.0 mmol g -1. The synthesized material showed a maximum specific surface area of 1567 m2 g-1 and an optimal CO2 adsorption pore size of 0.6 nm. The microporosity, surface area and oxidized S content of the material were found to be the determining factors for CO2 adsorption. These properties show that the as synthesized S-doped microporous carbon material can be more effective than similarly prepared N-doped microporous carbons in CO2 capture.
URI
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DOI
http://dx.doi.org/10.1016/j.carbon.2013.09.006
ISSN
0008-6223
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