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Acetylenedicarboxylate-based cerium(iv) metal–organic framework with fcu topology: a potential material for air cleaning from toxic halogen vapors

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Abstract

The most contracted cerium(IV)-based metal–organic framework (MOF) with fcu topology incorporating an alkyne-based linker, namely acetylenedicarboxylate (ADC), was synthesized under green conditions in water at room temperature and thoroughly characterized. The structure of this new MOF, denoted as Ce-HHU-1, was determined from powder X-ray diffraction data and Rietveld refinement and is made up of octahedral [Ce6O4(OH)4]12+ clusters, each of which is connected to other inorganic units by twelve ADC linkers to give a porous network with fcu topology analogous with UiO-66. The permanent microporosity of Ce-HHU-1 was confirmed by nitrogen sorption, meanwhile its high hydrophilicity was displayed by a type I water vapor sorption isotherm. The adsorption of CO2 in Ce-HHU-1 features a remarkably high zero-coverage isosteric heat of adsorption of 47 kJ mol−1, attributed to the presence of the –C[triple bond, length as m-dash]C– triple-bond in the framework. The latter also allows for Ce-HHU-1 to capture and irreversibly chemisorb Br2 vapors, as well as both chemi- and physisorb I2 vapors in an effective manner, making this material potentially applicable for air cleaning from toxic halogen vapors.

Graphical abstract: Acetylenedicarboxylate-based cerium(iv) metal–organic framework with fcu topology: a potential material for air cleaning from toxic halogen vapors

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Publication details

The article was received on 30 Aug 2019, accepted on 01 Oct 2019 and first published on 04 Oct 2019


Article type: Paper
DOI: 10.1039/C9DT03518D
Dalton Trans., 2019, Advance Article

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    Acetylenedicarboxylate-based cerium(IV) metal–organic framework with fcu topology: a potential material for air cleaning from toxic halogen vapors

    T. J. Matemb Ma Ntep, H. Reinsch, J. Liang and C. Janiak, Dalton Trans., 2019, Advance Article , DOI: 10.1039/C9DT03518D

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