Abstract: Shaping of metal-organic frameworks (MOFs) is one of the crucial steps toward their industrial applications. A number of methods for preparation of pellets containing MOF-micro/nanoparticles have been developed up to date; however, the uptake rates of guest molecules by such shaped MOFs and their dependence on preparation procedure were not analyzed in detail. Since optimization of the uptake rates is vital for practical use, in this work we employ spin-probe Electron Paramagnetic Resonance (EPR) to study solvent diffusion into ZIF-8 based pellets. This dedicated approach allows one to selectively monitor the impregnation of ZIF-8 particles embedded in the pellet, and corresponding diffusion coefficients can be obtained for the molecules of interest. Optimization of shaping procedure upon EPR control yields robust pellets with pore filling rates comparable to those for powdered ZIF-8. The proposed methodology yielded highly permeable ZIF-8-based pellets and is promising for future application in shaping of various MOFs.

Cite: Efremov A.A. , Poryvaev A.S. , Polyukhov D.M. , Fedin M.V.
Shaping of ZIF-8 upon EPR control for efficient uptake of guest molecules
Microporous and Mesoporous Materials. 2022. V.332. 111713 . DOI: 10.1016/j.micromeso.2022.111713 WOS Scopus OpenAlex

Dates:

Submitted:	Aug 18, 2021
Published online:	Jan 25, 2022
Published print:	Feb 2, 2022

Identifiers:

Web of science:	WOS:000761764300005
Scopus:	2-s2.0-85123604536
OpenAlex:	W4206941075

Citing:

DB	Citing
Scopus	9
Web of science	8

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