Are Zr6-based MOFs water stable? Linker hydrolysis vs. capillary-force-driven channel collapse

Joseph E. Mondloch; Michael J. Katz; Nora Planas; David Semrouni; Laura Gagliardi; Joseph T. Hupp; Omar K. Farha

doi:10.1039/c4cc02401j

Are Zr₆-based MOFs water stable? Linker hydrolysis vs. capillary-force-driven channel collapse

Joseph E. Mondloch, Michael J. Katz, Nora Planas, David Semrouni, Laura Gagliardi, Joseph T. Hupp, Omar K. Farha

Northwestern University

Research output: Contribution to journal › Article › peer-review

170 Citations (Scopus)

Abstract

Metal-organic frameworks (MOFs) built up from Zr₆-based nodes and multi-topic carboxylate linkers have attracted attention due to their favourable thermal and chemical stability. However, the hydrolytic stability of some of these Zr₆-based MOFs has recently been questioned. Herein we demonstrate that two Zr₆-based frameworks, namely UiO-67 and NU-1000, are stable towards linker hydrolysis in H₂O, but collapse during activation from H₂O. Importantly, this framework collapse can be overcome by utilizing solvent-exchange to solvents exhibiting lower capillary forces such as acetone.

Original language	English
Pages (from-to)	8944-8946
Number of pages	3
Journal	Chemical Communications
Volume	50
Issue number	64
DOIs	https://doi.org/10.1039/c4cc02401j
Publication status	Published - Jul 15 2014

ASJC Scopus subject areas

Catalysis
Electronic, Optical and Magnetic Materials
Ceramics and Composites
Chemistry(all)
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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abstract = "Metal-organic frameworks (MOFs) built up from Zr6-based nodes and multi-topic carboxylate linkers have attracted attention due to their favourable thermal and chemical stability. However, the hydrolytic stability of some of these Zr6-based MOFs has recently been questioned. Herein we demonstrate that two Zr6-based frameworks, namely UiO-67 and NU-1000, are stable towards linker hydrolysis in H2O, but collapse during activation from H2O. Importantly, this framework collapse can be overcome by utilizing solvent-exchange to solvents exhibiting lower capillary forces such as acetone.",

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AU - Mondloch, Joseph E.

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AU - Gagliardi, Laura

AU - Hupp, Joseph T.

AU - Farha, Omar K.

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