Graphene oxide doped ionic liquid ultrathin composite membranes for efficient CO2 capture
Villalobos, Luis Francisco
Akhtar, Faheem Hassan
KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
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AbstractAdvanced membrane systems with high flux and sufficient selectivity are required for industrial gas separation processes. In order to achieve high flux and high selectivity, the membrane material should be as thin as possible and it should have selective sieving channels and long term stability. This could be achieved by designing a three component material consisting of a blend of an ionic liquid and graphene oxide covered by a highly permeable low selective polymeric coating. By using a simple dip coating technique, we prepared high flux and CO selective ultrathin graphene oxide (GO)/ionic liquid membranes on a porous ultrafiltration support. The ultrathin composite membranes derived from GO/ionic liquid complex displays remarkable combinations of permeability (CO flux: 37 GPU) and selectivity (CO/N selectivity: 130) that surpass the upper bound of ionic liquid membranes for CO/N separation. Moreover, the membranes were stable when tested for 120 hours.
CitationKarunakaran M, Villalobos LF, Kumar M, Shevate R, Akhtar FH, et al. (2017) Graphene oxide doped ionic liquid ultrathin composite membranes for efficient CO2 capture. J Mater Chem A 5: 649–656. Available: http://dx.doi.org/10.1039/c6ta08858a.
SponsorsAuthors gratefully acknowledge financial support from the King Abdullah University of Science and Technology (KAUST).
PublisherRoyal Society of Chemistry (RSC)
JournalJ. Mater. Chem. A