Synthesis and Characterization of Fe−Fe2O3 Core−Shell Nanowires and Nanonecklaces

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 en...

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Bibliographic Details
Published in:Crystal growth & design 2007-02, Vol.7 (2), p.459-464
Main Authors: Lu, Lirong, Ai, Zhihui, Li, Jinpo, Zheng, Zhi, Li, Quan, Zhang, Lizhi
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Magnetic properties and materials
Materials science
Nanoscale materials and structures: fabrication and characterization
Physics
Quantum wires
Studies of specific magnetic materials
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Summary: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.
ISSN:1528-7483
1528-7505
DOI:10.1021/cg060633a