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

Anca Meffre (1) , Boubker Mehdaoui (1) , Vincent Connord (1) , Julian Carrey (1) , Pier-Francesco Fazzini (1) , Sébastien Lachaize (1) , Marc Respaud (1) , Bruno Chaudret (1)

1 LPCNO - Laboratoire de physique et chimie des nano-objets

Addition of Co2(Co)9 and Ru3(CO)12 on preformed monodisperse iron(0) nanoparticles (Fe(0) NPs) at 150 °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, Mössbauer 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.

Mots clés: bimetallic; catalysis; Fischer−Tropsch; iron; Magnetic nanoparticle

Domaines: Chimie

Anca Meffre, Boubker Mehdaoui, Vincent Connord, Julian Carrey, Pier-Francesco Fazzini, et al.. Complex Nano-objects Displaying Both Magnetic and Catalytic Properties: A Proof of Concept for Magnetically Induced Heterogeneous Catalysis. Nano Letters, 2015, 15 (5), pp.3241-3248. ⟨hal-02020314⟩