Synthesis and Coating of Cobalt Ferrite Nanoparticles: A First Step toward the Obtainment of New Magnetic Nanocarriers
2007; American Chemical Society; Volume: 23; Issue: 7 Linguagem: Inglês
10.1021/la063255k
ISSN1520-5827
AutoresGiovanni Baldi, Daniele Bonacchi, Mauro Comes Franchini, Denis Gentili, Giada Lorenzi, Alfredo Ricci, Costanza Ravagli,
Tópico(s)Iron oxide chemistry and applications
ResumoMonodisperse and stable cobalt ferrite (CoFe2O4) nanoparticles (5.4 nm) have been produced, coated with mono- and difunctional phosphonic and hydroxamic acids, and fully characterized (using thermogravimetric analysis (TGA), dynamic light scattering (DLS), IR spectroscopy, transmission electron microscopy (TEM), and superconducting quantum interference device (SQUID) measurements). Cobalt leakage of the coated nanoparticles has been also studied. Magnetic measurements show the possible applications in hyperthermia at low frequencies, and for this reason, water-soluble coated CoFe2O4 can be seen as a first step toward the obtainment of novel systems for biomagnetic applications.
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