Working Paper Article Version 1 This version is not peer-reviewed

Adsorptive Removal and Catalytic Performance of Metal-Organic Frameworks Containing Mixed Azolium-Bipyridine Ligand

Version 1 : Received: 30 November 2020 / Approved: 30 November 2020 / Online: 30 November 2020 (14:14:52 CET)

How to cite: Gholampour, N.; Ezugwu, C.I.; Rahmdel Delcheh, S.; Gilani, A.G.; Verpoort, F. Adsorptive Removal and Catalytic Performance of Metal-Organic Frameworks Containing Mixed Azolium-Bipyridine Ligand. Preprints 2020, 2020110730 Gholampour, N.; Ezugwu, C.I.; Rahmdel Delcheh, S.; Gilani, A.G.; Verpoort, F. Adsorptive Removal and Catalytic Performance of Metal-Organic Frameworks Containing Mixed Azolium-Bipyridine Ligand. Preprints 2020, 2020110730

Abstract

Two ligands, 1, 3-bis(4-carboxyphenyl)imidazolium chloride and 4, 4՛-bipyridine, were employed to prepare nickel and zinc azolium based MOFs, 1 and 2 by the mixed ligand solvothermal approach. The positively charged azolium moieties in the imidazolium linker resulted in a charged environment in the as-synthesized frameworks. As a result, 1 and 2 demonstrated preferential adsorption of CO2 over methane molecules in the gas phase adsorption due to the higher quadruple moment of CO2, which interacts more with the positively charged frameworks. Besides, in aqueous media, 1 and 2 exhibited incredible adsorption efficiency for anionic dyes. In the following, MOF 1 was metallated at the carbene site of the azolium linker to generate the novel heterogeneous catalyst 1-Pd, which was successfully applied for Sonogashira and Suzuki-Miyaura coupling reactions without losing its activity after three cycles.

Subject Areas

Azolium MOFs; Dye adsorption; Post modification; Cross-coupling reactions

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