Preparation of Ferromagnetic Manganese Doped Cobalt Ferrite-Silica Core Shell Nanoparticles for Possible Biological Application

S. Rostamzadehmansoor; Mirabdullah Seyed Sadjadi; K. Zare; Nazanin Farhadyar

doi:10.4028/www.scientific.net/DDF.334-335.19

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Transportation and Manufacturing Technology System (TMTS) Vibro-Impact Treatment of Large Pieces
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Evaluation of the Impact of Temperature and Type of Catalyst on the Bio-Oil Quality Obtained by Biomass Catalytic Pyrolysis Process
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Preparation of Ferromagnetic Manganese Doped Cobalt Ferrite-Silica Core Shell Nanoparticles for Possible Biological Application
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The Influence of some Physical Variables in the Capillarity Rise of Different Monolithic Walls
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Chemical Kinetics between Brine and Rock Salt Transitions
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Preparation of Ferromagnetic Manganese Doped Cobalt Ferrite-Silica Core Shell Nanoparticles for Possible Biological Application

Abstract:

Magnetic oxide nanoparticles with proper surface coatings are increasingly being evaluated for clinical applications such as hyperthermia, drug delivery, magnetic resonance imaging, transfection and cell/protein separations. In this work, we investigated synthesis, magnetic properties of silica coated metal ferrite, (CoFe₂O₄)/SiO₂ and manganese doped cobalt ferrite nanoparticles (Mn_x-Co_1-xFe₂O₄ with x = 0.02, 0.04 and 0.06)/SiO₂ for possible biomedical application. All the ferrites nanoparticles were prepared by co-precipitation method using FeCl₃.6H₂O, CoCl₂.6H₂O and MnCl₂.2H₂O as precursors, and were silica coated by the Stober process in directly ethanol. The composition, phase structure and morphology of the prepared core/shell cobalt ferrites nanostructures were characterized by powder X-ray diffraction (XRD), Fourier Transform infra-red spectra (FTIR), Field Emission Scanning Electron Microscopy and energy dispersive X-ray analysis (FESEM-EDAX). The results revealed that all the samples maintain the ferrite spinel structure. While, the cell parameters decrease monotonically by increase of Mn content indicating that the Mn ions are substituted into the lattice of CoFe₂O₄. The magnetic properties of the prepared samples were investigated at room temperature using Vibrating Sample Magnetometer (VSM). The results revealed a strong dependence of room temperature magnetic properties on (1) doping content, x; (2) particle size and ion distributions.