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Materials Research

versão impressa ISSN 1516-1439

Resumo

MAGALHAES, Fabiano; MOURA, Flavia Cristina Camilo; ARDISSON, José Domingos  e  LAGO, Rochel Montero. LaMn1-xFexO3 and LaMn0.1-xFe0.90Mox O3 perovskites: synthesis, characterization and catalytic activity in H2O2 reactions. Mat. Res. [online]. 2008, vol.11, n.3, pp. 307-312. ISSN 1516-1439.  http://dx.doi.org/10.1590/S1516-14392008000300013.

In this work two perovskites were prepared: LaMn1-xFexO3, and LaMn0.1-x Fe0.90MoxO3. XRD and Mössbauer spectroscopy suggest the formation of pure phase perovskite with the incorporation of Fe and Mo in the structure. The catalytic activity of these materials was studied in two reactions with H2O2: the decomposition to O2, and the oxidation of the model organic contaminant methylene blue. The perovskite composition strongly affects the catalytic activity, while Fe decreases the H2O2 decomposition Mo strongly improves dye oxidation.

Palavras-chave : perovskites; oxidation; catalysis.

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