Produção Nacional
Revisado por pares
Síntese e propriedades catalíticas em reações de oxidação de goethitas contendo nióbio
2007; Brazilian Chemical Society; Volume: 30; Issue: 4 Linguagem: Inglês
10.1590/s0100-40422007000400031
ISSN1678-7064
AutoresLuiz C.A. Oliveira, Maraísa Gonçalves, Diana Q. L. Oliveira, Aline Lefol Nani Guarieiro, Márcio C. Pereira,
Tópico(s)Advanced oxidation water treatment
ResumoSYNTHESIS AND CATALYTIC PROPERTIES ON OXIDATION REACTION OF GOETHITE CONTAINING NIOBIUM.Nbsubstituted goethites have been prepared and characterized by Mössbauer spectroscopy, XRD, SEM and BET surface area measurements.Mössbauer and XRD analyses suggested that Nb replaces Fe 3+ in the structure with duplet formation.The insertion of Nb into the goethite structure caused a significant increase in the BET surface area of the material.The prepared α-Fe 1-x Nb x OOH was investigated for the H 2 O 2 decomposition to O 2 and for the Fenton reaction to oxidize the dye methylene blue.It was observed that the introduction of Nb in to goethite produced a strong increase in the activity of oxidation of the dye contaminant by H 2 O 2 .
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