Issue 10, 2016

Defects in metal–organic frameworks: a compromise between adsorption and stability?

Abstract

Defect engineering has arisen as a promising approach to tune and optimise the adsorptive performance of metal–organic frameworks. However, the balance between enhanced adsorption and structural stability remains an open question. Here both CO2 adsorption capacity and mechanical stability are calculated for the zirconium-based UiO-66, which is subject to systematic variations of defect scenarios. Modulator-dependence, defect concentration and heterogeneity are explored in isolation. Mechanical stability is shown to be compromised at high pressures where uptake is enhanced with an increase in defect concentration. Nonetheless this reduction in stability is minimised for reo type defects and defects with trifluoroacetate substitution. Finally, heterogeneity and auxeticity may also play a role in overcoming the compromise between adsorption and stability.

Graphical abstract: Defects in metal–organic frameworks: a compromise between adsorption and stability?

Supplementary files

Article information

Article type
Paper
Submitted
03 nov 2015
Accepted
21 dec 2015
First published
23 dec 2015

Dalton Trans., 2016,45, 4352-4359

Author version available

Defects in metal–organic frameworks: a compromise between adsorption and stability?

A. W. Thornton, R. Babarao, A. Jain, F. Trousselet and F.-X. Coudert, Dalton Trans., 2016, 45, 4352 DOI: 10.1039/C5DT04330A

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