CuO urchin-nanostructures synthesized from a domestic hydrothermal microwave method
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Data
2008-03-04
Autores
Keyson, D.
Volanti, D. P. [UNESP]
Cavalcante, L. S.
Simões, Alexandre Zirpoli [UNESP]
Varela, José Arana [UNESP]
Longo, Elson [UNESP]
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Pergamon-Elsevier B.V. Ltd
Resumo
This letter reports the synthesis of CuO urchin-nanostructures by a simple and novel hydrothermal microwave method. The formation and growth of urchin-nanostructures is mainly affected by the addition of polyethylene glycol (PEG). The hierarchical malachite particles are uniform spheres with a diameter of 0.7-1.9 mu m. CuO urchin-nano structures were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FEG-SEM) and nitrogen adsorption (BET). The specific surface area of the CuO nanostructured microspheres was about 170.5 m(2)/g. A possible mechanism for the formation of such CuO urchin-nanostructures is proposed. (c) 2007 Elsevier Ltd. All rights reserved.
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oxides, chemical synthesis, electron microscopy
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Materials Research Bulletin. Oxford: Pergamon-Elsevier B.V. Ltd, v. 43, n. 3, p. 771-775, 2008.