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Synthesis of Single Crystalline Hematite Polyhedral Nanorods Via a Facile Hydrothermal Process

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Single-crystalline α-Fe2O3 nanorods with a polyhedral configuration have been successfully synthesized via a facile hydrothermal process at 180°C. X-ray powder diffraction, transmission electron microscopy observations, field emission scanning electron microscopy, and selected area electron diffraction patterns were used to characterize the as-synthesized samples. The result reveals that goethite nanorods were first generated and then transformed into hematite via dehydration in the successive hydrothermal treatment, in which the α-Fe2O3 inherited the rod-like morphology of the goethite precursor. The effect of surfactant and treatment time on the phase and morphology of the final products has been studied, and a possible growth mechanism is proposed.
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Document Type: Research Article

Affiliations: State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

Publication date: April 1, 2007

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