One-dimensional Iron Nanomaterials: Synthesis, Characterization And Catalytic Application In Fenton Reaction

Our efforts focused on the synthesis of nanostructured iron materials and their environmental catalytic properties. In this study, Fe@Fe₂O₃ core-shell nanowires and nanonecklaces were be obtained simply by controlling the reduction rate of Fe³⁺ ions by sodium borohydride in aqueous solution at ambient atmosphere. The resulting materials were characterized by X-ray powder diffraction, scanning electron microscopy images, energy dispersive X-ray spectrum, transmission electron microscopy, elemental mapping, X-ray photoemission spectroscopy, and magnetization measurements. A possible formation mechanism was proposed on the basis of characterization results. It was interesting to find that core-shell nanowires were much more effecitive Fenton reagent to degrade organic pollutant in aqueous solutions under neutral pH or pH = 2 by Sono-Fenton system. This study indicates that the resulting iron-containing nanostructures are promising materials in environmental catalytic fields.