Synthesis and Coating of Cobalt Ferrite Nanoparticles: A First Step toward the Obtainment of New Magnetic Nanocarriers

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• 作者：Giovanni Baldi ; Daniele Bonacchi ; Mauro Comes Franchini ; Denis Gentili ; Giada Lorenzi ; Alfredo Ricci ; Costanza Ravagli
• 刊名：Langmuir
• 出版年：2007
• 出版时间：March 27, 2007
• 年：2007
• 卷：23
• 期：7
• 页码：4026 - 4028
• 全文大小：231K
• 年卷期：v.23,no.7(March 27, 2007)
• ISSN：1520-5827

文摘

Monodisperse 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 superconductingquantum interference device (SQUID) measurements). Cobalt leakage of the coated nanoparticles has been alsostudied. Magnetic measurements show the possible applications in hyperthermia at low frequencies, and for thisreason, water-soluble coated CoFe₂O₄ can be seen as a first step toward the obtainment of novel systems for biomagneticapplications.