Surface-Capped SPIONs with EDTA and Structure-Doped with Cobalt Cations: Simple and Fast Preparation by One-Step Electrochemical Synthesis and Characterization

In this paper, EDTA-surface capped and cobalt-cations doped superparamagnetic iron oxide nanoparticles (EDTA/Co-SPIONs) are reported for the first time as a novel surface coated magnetic NPs. An easy and cheap electrochemical strategy is also developed for large-scale fabrication of EDTA/Co-SPIONs. For this aim, a simple cathodic base electrogeneration procedure was established where magnetite nanoparticles formation their surface capping with EDTA and crystal structure doping by Co cations were simultaneously achieved onto the cathode surface. The obtained EDTA/Co-SPIONs powder was analyzed through the structural, elemental and morphological analyses of FT-IR, EDAX, XRD, FE-SEM and DSC-TGA, and their magnetite (i.e. Fe3O4) crystal phase was verified by the XRD results, their 10 nm particle size was observed via FE-SEM microscopy, their structure doped with 10.69%wt cobalt cations was confirmed though EDAX data, and their surface coat with 10%wt. EDAT was cleared from the thermogravimetric data. VSM measurements proved the superparamagnetic behavior of the EDTA-capped EDTA/Co-IONs powder at the applied fields, where they presented proper saturation magnetization (Ms=36.55 emu g–1), negligible remanence (Mr=0.86 emu g–1) and low coercivity (Hci=9.74Oe). In final, it was concluded that the EDTA-capped Co2+ cations doped SPIONs with fine particles exhibit proper magnetic performances for biomedical uses.