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    Nanoporous Fluorinated Metal-Organic Framework-Based Membranes for CO2Capture

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    Type
    Article
    Authors
    Chernikova, Valeriya cc
    Shekhah, Osama cc
    Belmabkhout, Youssef cc
    Eddaoudi, Mohamed cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Chemical Science Program
    Functional Materials Design, Discovery and Development (FMD3)
    Physical Science and Engineering (PSE) Division
    Date
    2020-06-12
    Online Publication Date
    2020-06-12
    Print Publication Date
    2020-07-24
    Submitted Date
    2020-04-06
    Permanent link to this record
    http://hdl.handle.net/10754/665315
    
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    Abstract
    The search for effective carbon-capture materials has permitted the disclosure and institution of nanoporous fluorinated metal-organic frameworks (MOFs) with a contracted pore system as benchmark CO2-selective adsorbents. Namely, the SIFSIX-3-M (M = Zn, Cu, and Ni) MOF adsorbents, encompassing a periodic arrangement of fluorine moieties in a confined one-dimensional channels, exhibit a remarkable CO2 adsorption-based selectivity over CH4 and H2 in various industrially related gas mixtures. Here, we report the successful transplantation/integration of this distinctive CO2 selectivity, distinguishing this class of nanoporous MOF adsorbents to pure MOF membranes for carbon capture. Markedly, the liquid-phase epitaxy (LPE) growth approach permitted, for the first time, the building of continuous, homogeneous, and defect-free MOF membranes based on the SIFSIX-3-M platform, MSiF6(Pyz)2 with M = Ni or Cu, on a porous alumina substrate. Single and mixed-gas permeation tests revealed that the resulting nanoporous MOF membrane is a CO2-selective membrane, exhibiting the foreseen favorable CO2-selectivity toward carbon dioxide over H2, and CH4, governed by the CO2-selective adsorption in the functional and contracted channels of the SIFSIX-3-M.
    Citation
    Chernikova, V., Shekhah, O., Belmabkhout, Y., & Eddaoudi, M. (2020). Nanoporous Fluorinated Metal–Organic Framework-Based Membranes for CO2 Capture. ACS Applied Nano Materials, 3(7), 6432–6439. doi:10.1021/acsanm.0c00909
    Sponsors
    The authors gratefully acknowledge the financial support from King Abdullah University of Science and Technology (KAUST).
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Applied Nano Materials
    DOI
    10.1021/acsanm.0c00909
    Additional Links
    https://pubs.acs.org/doi/10.1021/acsanm.0c00909
    ae974a485f413a2113503eed53cd6c53
    10.1021/acsanm.0c00909
    Scopus Count
    Collections
    Articles; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Functional Materials Design, Discovery and Development (FMD3); Chemical Science Program

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