Samenvatting
Many mineral crystallization processes in aqueous solutions involve formation of nanoclusters with short-range order. Their transformation into crystalline products is not well understood. Here we investigate the formation of long-range crystalline order within networks of cobalt-based nanoclusters. High-resolution cryogenic transmission electron microscopy (cryoTEM) together with NMR and FTIR spectroscopies shows the formation of ∼0.8 nm sized (Co)(NH3)5CO3 complexes at the initial stage. By ligand exchange, those complexes become bridged by CO32-/OH- ligands and form ∼2 nm sized clusters, which subsequently aggregate into sheetlike networks due to the structural heterogeneity of the clusters. By further ligand change and adjustment in cluster orientations, long-range order is established, which leads to the nucleation of ammonium cobalt kambaldaite nanocrystals. Our observations demonstrate that nanoclusters with short-range order can form crystals via an oriented-attachment pathway, which provides new insights into multistep crystallization processes.
Originele taal-2 | Engels |
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Pagina's (van-tot) | 1143-1149 |
Aantal pagina's | 7 |
Tijdschrift | Journal of Physical Chemistry C |
Volume | 125 |
Nummer van het tijdschrift | 1 |
DOI's | |
Status | Gepubliceerd - 4 jan. 2021 |
Financiering
The authors gratefully acknowledge Shell Global Solutions and The Netherlands Association of Scientific Research (NWO) for funding through the CHIPP program. The research of Y.X. was supported by a Leverhulme research project grant (RPG-2017-178). The authors would like to thank Prof. Joseph Patterson (University of California, Irvine) for helpful discussions on the GOx cryoTEM experiments.
Financiers | Financiernummer |
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European Union’s Horizon Europe research and innovation programme | 885795 |
Vingerafdruk
Duik in de onderzoeksthema's van 'Crystallization via Oriented Attachment of Nanoclusters with Short-Range Order in Solution'. Samen vormen ze een unieke vingerafdruk.Uitrusting
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Center for Multiscale Electron Microscopy (CMEM)
Friedrich, H. (Manager), Bransen, M. (Education/onderzoek medewerker), Schmit, P. (Education/onderzoek medewerker), Schreur - Piet, I. (Inhoud) & Spoelstra, A. (Education/onderzoek medewerker)
Physical ChemistryUitrusting/faciliteit: Onderzoekslaboratorium