Resumo

LOPEZ-ROMERO, S.  e  MORALES LEAL, F.. γ-Fe₂O₃/ZnO composite particles prepared by a two step chemical soft method. Rev. mex. fis. [online]. 2011, vol.57, n.3, pp.236-240. ISSN 0035-001X.

Composite iron oxide-Zinc oxide (γ-Fe₂O₃/ZnO) was synthesized by two step method: in the first one step γ-Fe₂O₃ particles were obtained by a cetyltrimethylammonium hydroxide (CTAOH) assisted hydrothermal method at low temperature (60°C). In the second step, the γ-Fe₂O₃ particles were included in the ZnO particles synthesis, which were obtained by a hexamethylenetetramine (HMTA) assisted hydrothermal method at low temperature (90° C). SEM study of the samples revealed that the γ-Fe₂O₃/ZnO composites present a compact morphology. The γ-Fe₂O₃ and ZnO phases were identified by XRD, energy dispersive X-ray analysis (EDX) and analysis of the IR spectrum. The composite exhibit the characteristic emissions of ZnO under UV radiation and ferromagnetic behavior of γ-Fe₂O₃ under an external magnetic field.

Palavras-chave : Iron oxides; zinc oxides; hydrothermal method; composites.

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