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Issue 35, 2019
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Salt loading in MOFs: solvent-free and solvent-assisted loading of NH4NO3 and LiNO3 in UiO-66

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Abstract

While the loading of liquid or solid materials in the pores of metal–organic frameworks (MOFs) can yield composite materials with novel and useful emergent properties, the loading of solids, and ionic solids in particular, can be challenging. We report the loading of the salts NH4NO3 and LiNO3 in the MOF UiO-66. The relatively low-melting NH4NO3 is loaded in UiO-66 in a solvent-free method, and loading is complete in 8 h at 75 °C, far below the melting point of NH4NO3. The higher-melting LiNO3 requires a small amount of solvent (water) for loading, and active removal of water assists in loading of the salt to form a composite that is 38% by mass LiNO3. These and similar salt–MOF composites are of interest for applications such as solid-ion conductors and energetic materials.

Graphical abstract: Salt loading in MOFs: solvent-free and solvent-assisted loading of NH4NO3 and LiNO3 in UiO-66

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Supplementary files

Article information


Submitted
12 Jun 2019
Accepted
20 Aug 2019
First published
21 Aug 2019

Dalton Trans., 2019,48, 13483-13490
Article type
Paper
Author version available

Salt loading in MOFs: solvent-free and solvent-assisted loading of NH4NO3 and LiNO3 in UiO-66

S. Seth, T. P. Vaid and A. J. Matzger, Dalton Trans., 2019, 48, 13483
DOI: 10.1039/C9DT02489A

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