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. 2018 Aug 15;140(32):10113-10116.
doi: 10.1021/jacs.8b05802. Epub 2018 Jul 18.

Core-Shell Type Ionic Liquid/Metal Organic Framework Composite: An Exceptionally High CO2/CH4 Selectivity

Muhammad Zeeshan  1   2 , Vahid Nozari  1   2 , M Baris Yagci  3 , Tugba Isık  4 , Ugur Unal  3   5 , Volkan Ortalan  4 , Seda Keskin  1   2 , Alper Uzun  1   2   3
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Free article

Core-Shell Type Ionic Liquid/Metal Organic Framework Composite: An Exceptionally High CO2/CH4 Selectivity

Muhammad Zeeshan et al. J Am Chem Soc. .
Free article

Abstract

Here, we present a new concept of a core-shell type ionic liquid/metal organic framework (IL/MOF) composite. A hydrophilic IL, 1-(2-hydroxyethyl)-3-methylimidazolium dicyanamide, [HEMIM][DCA], was deposited on a hydrophobic zeolitic imidazolate framework, ZIF-8. The composite exhibited approximately 5.7 times higher CO2 uptake and 45 times higher CO2/CH4 selectivity at 1 mbar and 25 °C compared to the parent MOF. Characterization showed that IL molecules deposited on the external surface of the MOF, forming a core (MOF)-shell (IL) type material, in which IL acts as a smart gate for the guest molecules.

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