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Issue 19, 2006
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Template-free synthesis and characterization of novel 3D urchin-like α-Fe2O3 superstructures

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Abstract

Novel three-dimensional (3D) urchin-like α-Fe2O3 superstructures were successfully prepared by a template-free hydrothermal synthetic route using FeSO4·7H2O and NaClO3 as reagents. The as-obtained products were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Brunauer–Emmett–Teller analysis and vibrating sample magnetometry. It is shown that the superstructures consisted of well-aligned α-Fe2O3 nanorods growing radially from the cores of the superstructures. The α-Fe2O3 nanorods have an average length of about 800 nm and a mean diameter of about 80 nm. Magnetic hysteresis measurement reveal that the urchin-like α-Fe2O3 superstructures display weak ferromagnetic behavior with a remanence of 4.6783 × 10−3 emu g−1 and a coercivity of 92.235 Oe at room temperature. The formation mechanism of the 3D urchin-like α-Fe2O3 superstructures was also discussed.

Graphical abstract: Template-free synthesis and characterization of novel 3D urchin-like α-Fe2O3 superstructures

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Publication details

The article was received on 24 Mar 2006, accepted on 07 Apr 2006 and first published on 21 Apr 2006


Article type: Communication
DOI: 10.1039/B604378J
Citation: J. Mater. Chem., 2006,16, 1794-1797
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    Template-free synthesis and characterization of novel 3D urchin-like α-Fe2O3 superstructures

    L. Zhu, H. Xiao, X. Liu and S. Fu, J. Mater. Chem., 2006, 16, 1794
    DOI: 10.1039/B604378J

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