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Synthesis of hydrophobic MIL-53(Al) nanoparticles in low molecular weight alcohols: systematic investigation of solvent effects

Warfsman, Jan; Tokay, Begum; Champness, Neil

Synthesis of hydrophobic MIL-53(Al) nanoparticles in low molecular weight alcohols: systematic investigation of solvent effects Thumbnail


Authors

Jan Warfsman

BEGUM PEISSEL BEGUM.TOKAY@NOTTINGHAM.AC.UK
Professor of Chemical Engineering

Neil Champness



Contributors

Jan Warfsman
Other

Neil Champness
Other

Abstract

The effects of using low-weight alcohols, methanol and ethanol, for the synthesis of MIL-53(Al) are investigated and the results directly compared with analogous synthesis in water and N,N-dimethylformamide (DMF). When methanol is employed in the synthesis of MIL-53(Al), termed MIL 53(MeOH), several unique properties are observed. The breathing phenomenon which is known for MIL-53(Al) derivatives, prepared using water or DMF as reaction solvent, is not observed for samples prepared from methanol and the framework adopts, and remains in, the large-pore form. Thus, measurement of N2-isotherms and calculation of internal surface areas have verified that the synthesis of MIL-53(MeOH) leads to a product which is highly porous without the requirement for an energy-consuming activation process. Furthermore, X-ray diffraction measurements and scanning electron microscopy at different humidity levels reveal a reversible loss of crystallinity at high humidity levels for MIL-53(MeOH) which was not observed previously for any other known MIL-53 derivative. In contrast the synthesis of MIL-53(Al) in ethanol leads of a product with low crystallinity.

Journal Article Type Article
Acceptance Date Jul 5, 2018
Online Publication Date Jul 9, 2018
Publication Date Aug 28, 2018
Deposit Date Oct 18, 2018
Publicly Available Date Jul 10, 2019
Electronic ISSN 1466-8033
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 20
Issue 32
Pages 4666-4675
DOI https://doi.org/10.1039/C8CE00913A
Public URL https://nottingham-repository.worktribe.com/output/1175322
Publisher URL https://pubs.rsc.org/en/Content/ArticleLanding/2018/CE/C8CE00913A#!divAbstract

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