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Issue 43, 2018
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Shaping iron oxide nanocrystals for magnetic separation applications

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Abstract

Iron oxide nanostructures are attractive for a variety of bio-related applications given their wide range of magnetic properties. Here, we report on the study of the magnetophoretic mobility of octapod-shaped nanocrystals, which we relate to stoichiometry, quality and elongation in the 〈111〉 direction of these cubic structures. This special morphology combines magnetocrystalline anisotropies, increases shape anisotropy and hinders the formation of an epitaxial wüstite-magnetite interface. As a result, one obtains nanocrystals with large magnetic susceptibility and small coercivity, that is, with optimum characteristics for magnetic guidance, separation, and drug delivery, due to the increased magnetophoretic mobility displayed.

Graphical abstract: Shaping iron oxide nanocrystals for magnetic separation applications

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Publication details

The article was received on 20 Jul 2018, accepted on 22 Oct 2018 and first published on 25 Oct 2018


Article type: Paper
DOI: 10.1039/C8NR05864D
Citation: Nanoscale, 2018,10, 20462-20467
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    Shaping iron oxide nanocrystals for magnetic separation applications

    M. Testa-Anta, S. Liébana-Viñas, B. Rivas-Murias, B. Rodríguez González, M. Farle and V. Salgueiriño, Nanoscale, 2018, 10, 20462
    DOI: 10.1039/C8NR05864D

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