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    Novel porous carbon materials with ultrahigh nitrogen contents for selective CO 2 capture

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    Type
    Article
    Authors
    Zhao, Yunfeng cc
    Zhao, Lan
    Yao, Kexin
    Yang, Yang
    Zhang, Qiang cc
    Han, Yu cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Advanced Nanofabrication, Imaging and Characterization Core Lab
    Biological and Environmental Sciences and Engineering (BESE) Division
    Chemical Science Program
    Core Labs
    Imaging and Characterization Core Lab
    Nanostructured Functional Materials (NFM) laboratory
    Physical Science and Engineering (PSE) Division
    Date
    2012
    Permanent link to this record
    http://hdl.handle.net/10754/562017
    
    Metadata
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    Abstract
    Nitrogen-doped carbon materials were prepared by a nanocasting route using tri-continuous mesoporous silica IBN-9 as a hard template. Rationally choosing carbon precursors and carefully controlling activation conditions result in an optimized material denoted as IBN9-NC1-A, which possesses a very high nitrogen doping concentration (∼13 wt%) and a large surface area of 890 m 2 g -1 arising from micropores (<1 nm). It exhibits an excellent performance for CO 2 adsorption over a wide range of CO 2 pressures. Specifically, its equilibrium CO 2 adsorption capacity at 25 °C reaches up to 4.50 mmol g -1 at 1 bar and 10.53 mmol g -1 at 8 bar. In particular, it shows a much higher CO 2 uptake at low pressure (e.g. 1.75 mmol g -1 at 25 °C and 0.2 bar) than any reported carbon-based materials, owing to its unprecedented nitrogen doping level. The high nitrogen contents also give rise to significantly enhanced CO 2/N 2 selectivities (up to 42), which combined with the high adsorption capacities, make these new carbon materials promising sorbents for selective CO 2 capture from power plant flue gas and other relevant applications. © 2012 The Royal Society of Chemistry.
    Citation
    Zhao, Y., Zhao, L., Yao, K. X., Yang, Y., Zhang, Q., & Han, Y. (2012). Novel porous carbon materials with ultrahigh nitrogen contents for selective CO2 capture. Journal of Materials Chemistry, 22(37), 19726. doi:10.1039/c2jm33091a
    Sponsors
    This research was supported by the Academic Excellence Alliance (AEA) program of King Abdullah University of Science and Technology.
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    Journal of Materials Chemistry
    DOI
    10.1039/c2jm33091a
    ae974a485f413a2113503eed53cd6c53
    10.1039/c2jm33091a
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Advanced Membranes and Porous Materials Research Center; Imaging and Characterization Core Lab; Physical Science and Engineering (PSE) Division; Chemical Science Program

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