One-step Electrochemical Preparation of Oleic Acid Capped Superparamagnetic Iron Oxide Nanoparticles in Ethanol Medium and its Characterization

In this paper, oleic acid capped iron oxide nanoparticles (OA-IONPs) is prepared through a simple and efficient electrochemical synthetic route. OA-IONPs were synthesized from the Fe(III) nitrate (0.005 M) and 10 cc oleic acid dissolved in ethanol (96%) solution with applying 5 mA cm–2. The prepared IONPs were characterized by different techniques of XRD, FE-SEM, TEM, FT-IR, TGA, DLS and VSM. The OA layer on the surfaces of IONPs was confirmed by FT-IR, DLS and DSC-TGA analyses. The magnetic analysis by VSM revealed that the prepared OA-IONPs exhibit negligible Mr and Ce values at the condition of H→0, implicating their superparamagnetic nature.