Facile Electro-synthesis and Characterization of Superparamagnetic Starch Coated Gd3+ Doped Iron Oxide Nanoparticles for Biomedical Applications

Magnetic particles i.e. Fe3O4 nanoparticles have received great attention because of their potential biomedical applications like as MRI contrast agent, hyperthermia and biosensing magnetic labels. For these biomedical applications, Fe3O4 nanoparticles particles must have proper surface coatings and also acquire superparamagnetic properties with relatively high Ms values. Here, we performed Gd doping of iron oxide particles and their in situ surface modification through an electrochemical strategy. The prepared particles were examined using XRD, IR, TG, FE-SEM and EDAX analyses and their covering with starch and doping by Gd cations were approved. VSM data further proved the superparamagnetic behavior of the electrosynthesized iron oxide particles.