Journal
JOURNAL OF CRYSTAL GROWTH
Volume 284, Issue 1-2, Pages 221-225Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jcrysgro.2005.06.051
Keywords
nanostructures; nanomaterials; semiconducting materials
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The synthesis and shape evolution of alpha-Fe2O3 nanoparticles through oriented aggregation in solvothermal system were investigated. Transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM) revealed that the three-dimensional (3D) flower-like alpha-Fe-2-O-3 nanophase was formed by two-step crystallographically oriented aggregations, and then evolved to polyhedral nanoparticles by conventional Ostwald ripening. The organic solvent N, N-dimethylformamide (DMF) played an important role not only in chemical reaction, but also in oriented aggregation-based self-assembly. (c) 2005 Elsevier B.V. All rights reserved.
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