A promising electrodeposited iron oxide nanoparticles of very high saturation magnetization and superparamagnetic properties for remediation of polluted water with lead ions

摘要

For the first time, iron oxide nanoparticles (NPs) with very high saturation magnetization (Ms = 283 emu/g) and superparamagnetic properties compared with other published data are successfully obtained via a facile electrochemical method. Iron oxide nanoparticles (NPs) are fabricated by electroreduction of the ferric-triethanolamine complex in an alkaline medium but at certain optimized conditions. Here, the electro-deposition pathway of iron oxide NPs is traced and detected via cyclic voltammetry and X-ray powder diffraction (XRD) techniques. The scanning electron microscopy (SEM) and the high-resolution transmission electron microscopy (HR-TEM) are used for morphological characterization of the electrodeposits. These nanostructured iron oxides exhibited high efficiency towards the removal of lead ions. The capacity (Qm) of the removal of Pb2+ for these smart oxides is found to be 134.77 mg/g. Moreover, these materials give high uptake of about 96.58%. (C) 2018 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.