Monodisperse MFe2O4 (M = Fe, Co, Mn) Nanoparticles
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- 10 December 2003
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 126 (1) , 273-279
- https://doi.org/10.1021/ja0380852
Abstract
High-temperature solution phase reaction of iron(III) acetylacetonate, Fe(acac)3, with 1,2-hexadecanediol in the presence of oleic acid and oleylamine leads to monodisperse magnetite (Fe3O4) nanoparticles. Similarly, reaction of Fe(acac)3 and Co(acac)2 or Mn(acac)2 with the same diol results in monodisperse CoFe2O4 or MnFe2O4 nanoparticles. Particle diameter can be tuned from 3 to 20 nm by varying reaction conditions or by seed-mediated growth. The as-synthesized iron oxide nanoparticles have a cubic spinel structure as characterized by HRTEM, SAED, and XRD. Further, Fe3O4 can be oxidized to Fe2O3, as evidenced by XRD, NEXAFS spectroscopy, and SQUID magnetometry. The hydrophobic nanoparticles can be transformed into hydrophilic ones by adding bipolar surfactants, and aqueous nanoparticle dispersion is readily made. These iron oxide nanoparticles and their dispersions in various media have great potential in magnetic nanodevice and biomagnetic applications.This publication has 51 references indexed in Scilit:
- Functionalisation of magnetic nanoparticles for applications in biomedicineJournal of Physics D: Applied Physics, 2003
- The preparation of magnetic nanoparticles for applications in biomedicineJournal of Physics D: Applied Physics, 2003
- Applications of magnetic nanoparticles in biomedicineJournal of Physics D: Applied Physics, 2003
- Patterned Langmuir−Blodgett Films of Monodisperse Nanoparticles of Iron Oxide Using Soft LithographyJournal of the American Chemical Society, 2002
- Ni-Zn-Co ferrite films prepared at 90°C having μ"=30 at 3 GHzIEEE Transactions on Magnetics, 2002
- Monolayer Exchange Chemistry of γ-Fe2O3 NanoparticlesChemistry of Materials, 2002
- Surface and Internal Spin Canting in γ-Fe2O3 NanoparticlesChemistry of Materials, 1999
- Hydroxylamine Seeding of Colloidal Au Nanoparticles in Solution and on SurfacesLangmuir, 1998
- Synthesis and Characterization of Nanometer-Size Fe3O4 and γ-Fe2O3 ParticlesChemistry of Materials, 1996
- Theory, Production and Mechanism of Formation of Monodispersed HydrosolsJournal of the American Chemical Society, 1950