Publikation: Alignment of Amorphous Iron Oxide Clusters : A Non-Classical Mechanism for Magnetite Formation
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Angewandte Chemie International Edition. 2017, 56(14), pp. 4042-4046. ISSN 1433-7851. eISSN 1433-7851. Available under: doi: 10.1002/anie.201610275
Zusammenfassung
Despite numerous studies on the nucleation and crystallization of iron (oxyhydr)oxides, the roles of species developing during the early stages, especially primary clusters and intermediate amorphous particles, are still poorly understood. Herein, both ligand-free and ligand-protected amorphous iron oxide (AIO) clusters (<2 nm) were synthesized as precursors for magnetite formation. Thermal annealing can crystallize the clusters into magnetite particles, and AIO bulk phases with domains of pre-aligned clusters are found to be direct precursors to crystals, suggesting a non-classical aggregation-based pathway that differs from the reported oriented attachment or particle accretion mechanisms.
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SUN, Shengtong, Denis GEBAUER, Helmut CÖLFEN, 2017. Alignment of Amorphous Iron Oxide Clusters : A Non-Classical Mechanism for Magnetite Formation. In: Angewandte Chemie International Edition. 2017, 56(14), pp. 4042-4046. ISSN 1433-7851. eISSN 1433-7851. Available under: doi: 10.1002/anie.201610275BibTex
@article{Sun2017-03-27Align-38798,
year={2017},
doi={10.1002/anie.201610275},
title={Alignment of Amorphous Iron Oxide Clusters : A Non-Classical Mechanism for Magnetite Formation},
number={14},
volume={56},
issn={1433-7851},
journal={Angewandte Chemie International Edition},
pages={4042--4046},
author={Sun, Shengtong and Gebauer, Denis and Cölfen, Helmut}
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<dcterms:abstract xml:lang="eng">Despite numerous studies on the nucleation and crystallization of iron (oxyhydr)oxides, the roles of species developing during the early stages, especially primary clusters and intermediate amorphous particles, are still poorly understood. Herein, both ligand-free and ligand-protected amorphous iron oxide (AIO) clusters (<2 nm) were synthesized as precursors for magnetite formation. Thermal annealing can crystallize the clusters into magnetite particles, and AIO bulk phases with domains of pre-aligned clusters are found to be direct precursors to crystals, suggesting a non-classical aggregation-based pathway that differs from the reported oriented attachment or particle accretion mechanisms.</dcterms:abstract>
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