4.8 Article

Complex Nano-objects Displaying Both Magnetic and Catalytic Properties: A Proof of Concept for Magnetically Induced Heterogeneous Catalysis

Journal

NANO LETTERS
Volume 15, Issue 5, Pages 3241-3248

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.5b00446

Keywords

Magnetic nanoparticle; iron; bimetallic; catalysis; Fiseher-Tropsch

Funding

  1. ERC [NANOSONWINGS 2009-246763]

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Addition of Co-2(Co)(9) and Ru-3(CO)(12) on preformed monodisperse iron(0) nanoparticles (Fe(0) NPs) at 150 degrees C under H2 leads to monodisperse core-shell Fe@FeCo NPs and to a thin discontinuous Ru(0) layer supported on the initial Fe(0) NPs. The new complex NPs were studied by state-of-the-art transmission electron microscopy techniques as well as X-ray diffraction, Mossbauer spectroscopy, and magnetic measurements. These particles display large heating powers (SAR) when placed in an alternating magnetic field. The combination of magnetic and surface catalytic properties of these novel objects were used to demonstrate a new concept: the possibility of performing Fischer-Tropsch syntheses by heating the catalytic nanoparticles with an external alternating magnetic field.

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