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Exploring cation distribution in ion-exchanged Al,Ga-containing metal-organic frameworks using 17O NMR spectroscopy
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dc.contributor.author | Davis, Zachary H. | |
dc.contributor.author | Morris, Russell E. | |
dc.contributor.author | Ashbrook, Sharon E. | |
dc.date.accessioned | 2023-07-25T09:30:05Z | |
dc.date.available | 2023-07-25T09:30:05Z | |
dc.date.issued | 2023-08-14 | |
dc.identifier | 290719885 | |
dc.identifier | 014d0b79-7264-42df-9e92-de400307f491 | |
dc.identifier | 85166388335 | |
dc.identifier.citation | Davis , Z H , Morris , R E & Ashbrook , S E 2023 , ' Exploring cation distribution in ion-exchanged Al,Ga-containing metal-organic frameworks using 17 O NMR spectroscopy ' , Physical Chemistry Chemical Physics , vol. 25 , no. 30 , pp. 20267-20280 . https://doi.org/10.1039/D3CP03071G | en |
dc.identifier.issn | 1463-9076 | |
dc.identifier.other | ORCID: /0000-0002-4538-6782/work/139554099 | |
dc.identifier.other | ORCID: /0000-0001-7809-0315/work/139554835 | |
dc.identifier.uri | https://hdl.handle.net/10023/28019 | |
dc.description | The authors would like to thank the ERC (Advanced Grant 787073 ADOR) for support. The UK High-Field Solid-State NMR Facility used in this research was funded by EPSRC and BBSRC (EP/T015063/1), in addition to (for results at 850 MHz) the University of Warwick including via part funding through Birmingham Science City Advanced Materials Projects 1 and 2 supported by Advantage West Midlands (AWM) and the European Regional Development Fund (ERDF), and for the 1 GHz instrument, (EP/R029946/1). Collaborative assistance from the Facility Manager Team (Dr Trent Franks, University of Warwick) is acknowledged. The Jeol JSM-IT200 SEM used in this research was supported by the EPSRC Light Element Analysis Facility Grant (EP/T019298/1) and the EPSRC Strategic Equipment Resource Grant (EP/R023751/1). Collaborative assistance from Dr David Miller (University of St Andrews) is acknowledged. | en |
dc.description.abstract | A mixed-metal metal–organic framework, (Al,Ga)-MIL-53, synthesised by post-synthetic ion exchange has been investigated using solid-state nuclear magnetic resonance (NMR) spectroscopy, microscopy and energy dispersive X-ray (EDX) spectroscopy. 17O enrichment during the ion-exchange process enables site specific information on the metal distribution to be obtained. Within this work two ion-exchange processes have been explored. In the first approach (exchange of metals in the framework with dissolved metal salts), 17O NMR spectroscopy reveals the formation of crystallites with a core–shell structure, where the cation exchange takes place on the surface of these materials forming a shell with a roughly equal ratio of Al3+ and Ga3+. For the second approach (exchange of metals between two frameworks), no core–shell structure is observed, and instead crystallites containing a majority of Al3+ are obtained with lower levels of Ga3+. Noticeably, these particles show little variation in the metal cation distribution between crystallites, a result not previously observed for bulk (Al,Ga)-MIL-53 materials. In all cases where ion exchange has taken place NMR spectroscopy reveals a slight preference for clustering of like cations. | |
dc.format.extent | 14 | |
dc.format.extent | 4564413 | |
dc.language.iso | eng | |
dc.relation.ispartof | Physical Chemistry Chemical Physics | en |
dc.subject | QD Chemistry | en |
dc.subject | DAS | en |
dc.subject | MCC | en |
dc.subject.lcc | QD | en |
dc.title | Exploring cation distribution in ion-exchanged Al,Ga-containing metal-organic frameworks using 17O NMR spectroscopy | en |
dc.type | Journal article | en |
dc.contributor.sponsor | European Research Council | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.institution | University of St Andrews. School of Chemistry | en |
dc.contributor.institution | University of St Andrews. EaSTCHEM | en |
dc.identifier.doi | https://doi.org/10.1039/D3CP03071G | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | 787073 | en |
dc.identifier.grantnumber | EP/T019298/1 | en |
dc.identifier.grantnumber | EP/R023751/1 | en |
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