Journal
MATERIALS LETTERS
Volume 65, Issue 12, Pages 1911-1914Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2011.03.085
Keywords
Hematite; Nanoparticles; Hydrothermal synthesis; Crystal growth; Nanocrystalline materials
Funding
- National Natural Science Foundation of China [21001081, 21043004, 20771083]
- Excellent Introduced Talents of Tianjin Normal University [5RL071]
- Doctoral Foundation of Tianjin Normal University [52X09007]
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Uniform hematite nanoparticles have been successfully synthesized through a surfactant mediated hydrothermal method. The structure and morphology of the products were characterized by powder X-ray diffraction, transmission electron microscope. scanning electron microscope, and Fourier transform infrared spectrometer. The results showed that the products were alpha-Fe2O3 nanoellipsoids of 115-140 nm in long axis and 60-80 nm in short axis. The growth mechanism of the products was proposed based on the experiments. Uniform nanospindles, nanoellipsoids, nanospheres, and nanopolyhedra with different sizes can be obtained by adjusting the reaction temperature, the amount of additive. and concentration of the reactants. The result may facilitate the exploration of controlled synthesis of alpha-Fe2O3 nanoparticles. (C) 2011 Elsevier B.V. All rights reserved.
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