Publicação: Preparation of CeO2 by a simple microwave-hydrothermal method
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Elsevier B.V.
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Resumo
Cerium carbonate hydroxide (orthorhombic Ce(OH)CO3) hexagonal-shaped microplates were synthesized by a simple and fast microwave-hydrothermal method at 150 degrees C for 30 min. Cerium nitrate, urea and cetyltrimethylammonium bromide were used as precursors. Ceria (cubic CeO2) rhombus-shape was obtained by a thermal decomposition oxidation process at 500 degrees C for 1 h using as- synthesized Ce(OH)CO3. The products were characterized by X-ray powder diffraction, field-emission scanning electron microscopy, thermogravimetric analysis and Fourier transformed infrared spectroscopy. The use of microwave-hydrothermal method allowed to obtain cerium compounds at low temperature and shorter time compared to other synthesis methods. (C) 2008 Elsevier B.V. All rights reserved.
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Cerium compounds, Ceria, Microwave-hydrothermal method, Thermal decomposition oxidation
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Inglês
Como citar
Solid State Ionics. Amsterdam: Elsevier B.V., v. 180, n. 2-3, p. 288-291, 2009.
