Preparation of core-shell spinel ferrite nanoparticles by hydrothermal method and their characterization
Vendredi 8 juin 2018 10:30
- Duree : 1 heure
Lieu : ILL 4, Amphi Chadwick - 71 avenue des Martyrs - Grenoble
Orateur : Daniel NIZNANSKY (Department of Inorganic Chemistry, Charles University, Czech Republic)
Spinel ferrites nanoparticles are well-studied group of nanostructured materials in recent years due to interesting magnetic properties. They are prepared by various ways ranging from simple precipitation reactions to more complicated processes based on metal-organic precursors of transition metals. Hydrothermal preparation has the advantage of the preparation of well crystalline isolated nanoparticles, and the dispersion nanoparticle system does not contain toxic by-products produced by the thermal decomposition method in high boiling organic solvents (e.g., benzylether).
The contribution is divided into two parts. In the first part, the preparation of simple ferrite nanoparticles (Fe3O4/gamma-Fe2O3, CoFe2O4 and MnFe2O4) by hydrothermal method and their structural and morphological characterization (XRD, electron microscopy, Mössbauer spectroscopy) will be reported. These nanoparticles then serve as nuclei for the preparation of core-shell nanoparticles, those results will be discussed in the second part of the contribution.
Contact : mader@ill.fr
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