Synthesis and Characterization of Cobalt Ferrite (CoFe2O4) Magnetic Nanoparticles by Ball-Milling and Sol-Gel Techniques
Abstract
Magnetic nanostructures play an important role in nanotechnology allowing for technological advances in electronic devices, photocatalysis, sustainable energy, biotechnology and medicine. In particular, cobalt ferrite (CoFe2O4) magnetic nanoparticles (MNP) have strong uniaxial magnetic moments, which allow for applications in hyperthermia and targeted drug delivery. Therefore, these particles were synthesized using two different techniques: mechanochemical ball-milling and sol-gel. Using Mössbauer Spectroscopy, X-Ray diffraction, Transmission Electron Microscopy, SQUID magnetometry, and Specific Absorption Rate (SAR) measurements, their magnetic, structural, and thermal transfer characteristics were analyzed and compared to maghemite (gamma-Fe2O3) and magnetite(Fe3O4) MNPs. In addition, for cobalt ferrite nanoparticles to be used within the body they must be rendered bio-compatible through surface ligand exchange processes in order to avoid being targeted by the body's auto-defense system. Therefore, different ligands were experimented with to determine an optimal coating for usage in the body.
- Publication:
-
APS March Meeting Abstracts
- Pub Date:
- 2019
- Bibcode:
- 2019APS..MARG70068L