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Venel F, Giovine R, Laurencin D, Špačková J, Mittelette S, Métro TX, Volkringer C, Lafon O, Pourpoint F. Probing oxygen exchange between UiO-66(Zr) MOF and water using 17 O solid-state NMR. Chemistry 2024; 30:e202302731. [PMID: 38227358 DOI: 10.1002/chem.202302731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Indexed: 01/17/2024]
Abstract
The Zr-based Metal Organic Framework (MOF) UiO-66(Zr) is widely employed owing to its good thermal and chemical stabilities. Although the long-range structure of this MOF is preserved in the presence of water during several days, little is known about the formation of defects, which cannot be detected using diffraction techniques. We apply here 17 O solid-state NMR spectroscopy at 18.8 T to investigate the reactivity of UiO-66, through the exchange of oxygen atoms between the different sites of the MOF and water. For that purpose, we have selectively enriched in 17 O isotope the carboxylate groups of UiO-66(Zr) by using it with 17 O-labeled terephthalic acid prepared using mechanochemistry. In the presence of water at 50 °C and a following dehydration at 150 °C, we observe an overall exchange of O atoms between COO- and μ3 -O2- sites. Furthermore, we demonstrate that the three distinct oxygen sites, μ3 -OH, μ3 -O2- and COO- , of UiO-66(Zr) MOF can be enriched in 17 O isotope by post-synthetic hydrothermal treatment in the presence of 17 O-enriched water. These results demonstrate the lability of Zr-O bonds and the reactivity of UiO-66(Zr) with water.
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Affiliation(s)
- Florian Venel
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000, Lille, France
| | - Raynald Giovine
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000, Lille, France
| | - Danielle Laurencin
- Institut Charles Gerhardt Montpellier, UMR-5253 CNRS-UM-ENSCM, 1919 route de Mende, 34095, Montpellier, Cedex 05, France
| | - Jessica Špačková
- Institut Charles Gerhardt Montpellier, UMR-5253 CNRS-UM-ENSCM, 1919 route de Mende, 34095, Montpellier, Cedex 05, France
| | - Sébastien Mittelette
- Institut Charles Gerhardt Montpellier, UMR-5253 CNRS-UM-ENSCM, 1919 route de Mende, 34095, Montpellier, Cedex 05, France
| | - Thomas-Xavier Métro
- Institut Charles Gerhardt Montpellier, UMR-5253 CNRS-UM-ENSCM, 1919 route de Mende, 34095, Montpellier, Cedex 05, France
| | - Christophe Volkringer
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000, Lille, France
| | - Olivier Lafon
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000, Lille, France
| | - Frédérique Pourpoint
- Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois, UMR 8181 - UCCS - Unité de Catalyse et Chimie du Solide, F-59000, Lille, France
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