Abstract. The simple method of fabrication of crystalline superparamagnetic nanoferrite (Fe 3 O 4 ) particles using oxidative hydrolysis of Fe (II) salt in a deep eutectic solventwater mixture has been reported. The spectral properties of Fe3O4 nanoparticles were characterized by Fourier Transform Infrared (FTIR) spectroscopy; X-Ray Di raction (XRD) as well as Scanning Electron Microscopy (SEM) techniques were used to estimate the crystalline structure and particle size. The results of the studies revealed that this technique could be adopted to synthesize agglomerate-free superparamagnetic Fe 3 O 4 nanoparticles in a simple manner in deep eutectic solvent which may nd potential application in the biosensor and corrosion protective coatings.
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