Synthesis and characterization of magnetic iron oxide nanoparticles by co-precipitation method at different conditions

Abstract EN

Magnetic nanoparticles (MNPs) of iron oxide (Fe3O4) represent the most promising materials in many applications.

MNPs have been synthesized by co-precipitation of ferric and ferrous ions in alkaline solution.

Two methods of synthesis were conducted with different parameters, such as temperature (25 and 80 ̊C), adding a base to the reactants and the opposite process, and using nitrogen as an inert gas.

The product of the first method (MNPs-1) and the second method (MNPs-2) were characterized by x-ray diffractometer (XRD), Zeta Potential, atomic force microscope (AFM) and scanning electron microscope (SEM).

AFM results showed convergent particle size of (MNPs-1) and (MNPs-2) with (86.01) and (74.14) nm respectively.

Also, the zeta potential values of (MNPs-1) and (MNPs-2) were (2.77) and (-12.48) mV, respectively, which indicates more stability of (MNP-2).