Issue 42, 2019

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

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

Supplementary files

Article information

Article type
Paper
Submitted
30 Aug 2019
Accepted
01 Oct 2019
First published
04 Oct 2019

Dalton Trans., 2019,48, 15849-15855

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, 48, 15849 DOI: 10.1039/C9DT03518D

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