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Journal of Nanomaterials
Volume 2011, Article ID 159259, 5 pages
Research Article

Hydrothermal Synthesis and Characterization of Single-Crystalline 𝛼 -Fe2O3 Nanocubes

1School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
2Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, Hunan 410083, China

Received 11 April 2010; Accepted 15 June 2010

Academic Editor: Quanqin Dai

Copyright © 2011 Wenqing Qin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Single-crystalline 𝛼 - F e 2 O 3 nanocubes were successfully obtained in large quantities through a facile one-step hydrothermal synthetic route under mild conditions. In this synthetic system, aqueous iron (III) nitrate ( F e ( N O 3 ) 3 9 H 2 O ) served as iron source and triethylamine served as precipitant and alkaline agent. By prolonging reaction time from 1 h to 24 h, the evolution process of 𝛼 - F e 2 O 3 , from nanorhombohedra to nanohexahedron, and finally nanocube, was observed. The products were characterized by Powder X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), High-resolution Transmission Electron Microscopy (HRTEM), Selected-Area Electron Diffraction (SAED), and Fourier Transform Infrared Spectrometry (FTIR). The possible formation mechanism was discussed on basis of the experimental results.