Frontiers in Chemistry (Nov 2020)

Synthesis and Characterization of 2D Metal-Organic Frameworks for Adsorption of Carbon Dioxide and Hydrogen

  • Piwai Tshuma,
  • Banothile C. E. Makhubela,
  • Christophe A. Ndamyabera,
  • Susan A. Bourne,
  • Gift Mehlana

DOI
https://doi.org/10.3389/fchem.2020.581226
Journal volume & issue
Vol. 8

Abstract

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The reaction of Cd(NO3)2·4H2O and Zn(NO3)2·6H2O with the bipyridyl dicarboxylate ligand H2bpydc (2,2′-bipyridine-4,4′-dicarboxylic acid) afforded two porous metal organic frameworks [Cd(bpydc)2(DMF)2·2DMF]n (JMS-3) and [Zn(bpydc)(DMF)·DMF]n (JMS-4). X-ray diffraction studies revealed that both JMS-3 and JMS-4 crystallize in the monoclinic crystal. The MOFs possess 2D interdigited networks with (sql) topology. Sorption studies showed that the activated phase of JMS-3 had CO2 volumetric uptakes of 26.50 and 30.89 cm3 (STP) g−1 (1.18 and 1.39 mmol g−1) whist JMS-4 gave 10.96 and 16.08 cm3 (STP) g−1 (0.49 and 0.71 mmol g−1) at 298 and 273 K respectively.

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