Objective: In this study, magnetic iron oxide nanoparticles were synthesized by cost effective
and an easy co-precipitation method.
Method: The effects of reaction parameters such as the mole ratio of Fe2+/Fe3+ (1/1, 1/2 and 1/3)
and the base type (NaOH and NH4OH) on the average hydrodynamic diameter, zeta potential,
chemical and morphological structure and saturation magnetization values of magnetic iron oxide
nanoparticles were systematically investigated.
Result: Magnetic iron oxide nanoparticles synthesized at the mole ratio of 1/2 using NH4OH base
gave better results in terms of particle size and particle shape, magnetization value.
Conclusion: In order to prevent the formation of different phases in the co-precipitation method,
an alternative approach was developed and the reaction was performed using inert supercritical