Nanoporous Fluorinated Metal-Organic Framework-Based Membranes for CO2Capture
KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Chemical Science Program
Functional Materials Design, Discovery and Development (FMD3)
Physical Science and Engineering (PSE) Division
Online Publication Date2020-06-12
Print Publication Date2020-07-24
Permanent link to this recordhttp://hdl.handle.net/10754/665315
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AbstractThe 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.
CitationChernikova, 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
SponsorsThe authors gratefully acknowledge the financial support from King Abdullah University of Science and Technology (KAUST).
PublisherAmerican Chemical Society (ACS)
JournalACS Applied Nano Materials