Abstract:
Cobalt ferrite (CoFe2O4) nanoparticles were synthesised by a simple and cost-effective method using
Co and Fe nitrates and freshly extracted egg white in an aqueous medium. X-ray diffraction patterns
and Selected Area Electron Diffraction (SAED) pattern results indicate that the CoFe2O4 nanoparticles
have spinel structure with Fd3m space group. The average particle size of CoFe2O4 nanoparticles is
found to from 45 nm. Temperature and field dependence of magnetisation reveals that the CoFe2O4
nanoparticles form ferrimagnetic in nature. A null cytotoxicity is observed in the CoFe2O4 nanoparticle
which indicates that the material has an excellent biocompatibility. In order to check the importance of
CoFe2O4 nanoparticles using the egg-white synthesis, the structural, magnetic and cytotoxicity of CoFe2O4
nanoparticles prepared via egg white method have been compared with that of sol–gel method. The eggwhite
method adopted in the present study appears to be a promising route of CoFe2O4 nanoparticles for
biomedical applications.
