Journal
CRYSTAL GROWTH & DESIGN
Volume 7, Issue 2, Pages 459-464Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cg060633a
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Fe-Fe2O3 core-shell nanowires and nanonecklaces were obtained simply through 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 and 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 the core-shell nanowires used in electrochemical-assisted and ultrasound-assisted Fenton-like reaction systems could much more efficiently degrade organic pollutant in aqueous solutions than traditional Fenton reagent Fe2+ ions under neutral pH and pH 2, respectively. This study indicates that the resulting iron-containing nanostructures are promising materials in magnetic, environmental, and catalytic fields.
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