Reduced Magnetism in Core-Shell Magnetite@MOF Composites.

Elsaidi, Sameh K; Sinnwell, Michael A; Banerjee, Debasis; Devaraj, Arun; Kukkadapu, Ravi K; Droubay, Timothy C; Nie, Zimin; Kovarik, Libor et al. · Nano Lett · 2017

basic_science · Level V

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Abstract

The magnetic susceptibility of synthesized magnetite (Fe<sub>3</sub>O<sub>4</sub>) microspheres was found to decline after the growth of a metal-organic framework (MOF) shell on the magnetite core. Detailed structural analysis of the core-shell particles using scanning electron microscopy, transmission electron microscopy, atom probe tomography, and<sup>57</sup>Fe-Mössbauer spectroscopy suggests that the distribution of MOF precursors inside the magnetic core resulted in the oxidation of the iron oxide core.