Fabrication of core–shell CoFe2O4@HAp nanoparticles: a novel magnetic platform for biomedical applications

Core–shell CoFe2O4@HAp magnetic nanoparticles were successfully prepared by a simple two-step hydrothermal process, and their physicochemical and magnetic properties were studied. X-ray diffraction and Fourier transform infrared spectroscopy of the as-synthesized samples reveal that the nanoparticle...

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Bibliographic Details
Published in:New journal of chemistry 2019, Vol.43 (34), p.13584-13593
Main Authors: Karthickraja, D, Karthi, S, Kumar, G A, Sardar, D K, Dannangoda, G C, Martirosyan, K S, Girija, E K
Format: Article
Language:English
Subjects:
Anisotropy
Biocompatibility
Biomedical materials
Cobalt ferrites
Coercivity
Ferromagnetism
Fourier transforms
Heat treatment
Magnetic moments
Magnetic properties
Magnetic saturation
Magnetism
Magnetization
Nanoparticles
Synthesis
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Summary:Core–shell CoFe2O4@HAp magnetic nanoparticles were successfully prepared by a simple two-step hydrothermal process, and their physicochemical and magnetic properties were studied. X-ray diffraction and Fourier transform infrared spectroscopy of the as-synthesized samples reveal that the nanoparticles are composed of both phases (HAp@CoFe2O4). The core–shell formation was confirmed by TEM and from the magnetization studies using a vibrating sample magnetometer (VSM), and the ferromagnetic nature of the synthesized core–shell nanoparticles at room temperature was confirmed by saturation magnetization (Ms) and coercivity values of 9.04 emu g−1 and 0.1 T, respectively. It has been observed that heat treatment enhanced the saturation magnetization when compared to the as-prepared samples. The reason for this enhanced magnetic property after heat treatment is discussed based on the magnetic moment and anisotropy calculations. The potential cytocompatibility of the sample was confirmed by fibroblast 3T3 cells.
ISSN:1144-0546
1369-9261
DOI:10.1039/c9nj02510c