Facile Electrosynthesis of Zinc-doped Superparamagnetic Iron Oxide Nanoparticles and their Surface Capping with Dextran Layer for Biomedical Uses

In this study, superparamagnetic iron oxide nanoparticles (SPIONs) are simply fabricated through a one-step electrodeposition method, and their in situ surface capping with dextran layer and crystal structure doping with zinc cations are simultaneously performed during their electrochemical synthesis. A simple conditions of room temperature, two-electrode electroplating, direct current synthesis and pH=6.7 were applied in the electrodeposition process. The fabricated SPIONs are characterized through Fourier transform infrared (FTIR) spectroscopy, X-ray powder diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), vibrating sample manometer (VSM), thermogravimetric (TG) and differential scanning calorimetry (DSC) analyses. These analyses results indicated that the prepared SPIONs have particles with 15nm size. The magnetic characters i.e. saturation magnetization (Ms), remanence (Mr) and coercivity (Hci) values of the fabricated SPIONs were measured to be 51.75 emu g–1, 0.16 emu g–1 and 3.35 Oe, respectively. It was found that the dextran surface capped-, zinc doped- SPIONs are proper candidates for biomedical investigations.