Microwave-assisted activation and modulator removal in zirconium MOFs for buffer-free CWA hydrolysis

Kalinovskyy, Y., Cooper, N. J., Main, M. J., Holder, Simon J., Blight, B. A. (2017) Microwave-assisted activation and modulator removal in zirconium MOFs for buffer-free CWA hydrolysis. Dalton Transactions, 2017 (45). pp. 15704-15709. ISSN 1477-9226. (doi:10.1039/C7DT03616G)

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Abstract

A novel, facile and efficient method was developed for the activation of acetic acid modulated zirconium MOFs. The protocol involves briefly heating the material in water using microwave irradiation. MOF-808, DUT-84 and UiO-66 were all activated in this manner to remove the modulator and organic solvent from the framework post synthesis, with retention of MOF integrity post activation. The degree of activation was characterised by the use of TGA and NMR. The catalytic activity of the activated MOFs and their non-activated counterparts was investigated for chemical warfare agent (CWA) hydrolysis. Upon activation, an increase in the rate of hydrolysis was observed in the degradation of CWA simulant dimethyl 4-nitrophenyl phosphate (DMNP). MOF-808 and DUT-84 were also screened as catalysts for the hydrolysis of the V-series agent VM, with remarkable half-lives obtained for MOF-808 in the absence of any buffers. Currently employed MOF activation procedures involve the use of additional organic solvents post synthesis; we believe this method to be ideally efficacious for the organic desolvation of zirconium MOFs and removing modulator additives.

Item Type: Article
DOI/Identification number: 10.1039/C7DT03616G
Divisions: Faculties > Sciences > School of Physical Sciences
Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Simon Holder
Date Deposited: 09 Dec 2017 16:44 UTC
Last Modified: 29 May 2019 20:01 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/65153 (The current URI for this page, for reference purposes)
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