Journal article
Single-step synthesis and interface tuning of core–shell metal–organic framework nanoparticles
- Abstract:
- Control over the spatial distribution of components in metal–organic frameworks has potential to unlock improved performance and new behaviour in separations, sensing and catalysis. We report an unprecedented single-step synthesis of multi-component metal–organic framework (MOF) nanoparticles based on the canonical ZIF-8 (Zn) system and its Cd analogue, which form with a core–shell structure whose internal interface can be systematically tuned. We use scanning transmission electron microscopy, X-ray energy dispersive spectroscopy and a new composition gradient model to fit high-resolution X-ray diffraction data to show how core–shell composition and interface characteristics are intricately controlled by synthesis temperature and reaction composition. Particle formation is investigated by in situ X-ray diffraction, which reveals that the spatial distribution of components evolves with time and is determined by the interplay of phase stability, crystallisation kinetics and diffusion. This work opens up new possibilities for the control and characterisation of functionality, component distribution and interfaces in MOF-based materials.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 1.4MB, Terms of use)
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- Publisher copy:
- 10.1039/d0sc03940c
Authors
- Publisher:
- Royal Society of Chemistry
- Journal:
- Chemical Science More from this journal
- Volume:
- 2021
- Issue:
- 12
- Article number:
- 4494
- Publication date:
- 2021-02-09
- Acceptance date:
- 2021-02-08
- DOI:
- EISSN:
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2041-6539
- ISSN:
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2041-6520
- Language:
-
English
- Keywords:
- Pubs id:
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1160678
- Local pid:
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pubs:1160678
- Deposit date:
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2021-02-10
- ARK identifier:
Terms of use
- Copyright holder:
- Orr et al.
- Copyright date:
- 2021
- Rights statement:
- © 2021 The Author(s). Published by the Royal Society of Chemistry. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.
- Licence:
- CC Attribution (CC BY)
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