Synthesis and characterization of iron/niobium composites: catalyst for dye wastewater treatments

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorRezende, Carlos C.-
Autor(es): dc.creatorLeal Neto, Jonas-
Autor(es): dc.creatorSilva, Adilson C.-
Autor(es): dc.creatorLima, Verônica M.-
Autor(es): dc.creatorPereira, Márcio C.-
Autor(es): dc.creatorOliveira, Luiz C. A.-
Data de aceite: dc.date.accessioned2026-02-09T11:48:41Z-
Data de disponibilização: dc.date.available2026-02-09T11:48:41Z-
Data de envio: dc.date.issued2019-12-11-
Data de envio: dc.date.issued2019-12-11-
Data de envio: dc.date.issued2012-09-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/38123-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S1566736712002294-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1147977-
Descrição: dc.descriptionA series of niobium/iron composites, Nb2O5/Fe(III) (%Fe(w/w) = 0.0, 2.0, 2.4 and 7.6), was prepared by conventional co-precipitation method. Powder XRD, 57Fe Mössbauer spectroscopy, temperature-programmed reduction and energy dispersive spectroscopy results suggested the formation of Fe-doped niobium oxide with deposition of hematite (α-Fe2O3) on the niobium oxide surface when iron percentage increases. The reactivity of the composites was investigated by the oxidation of the methylene blue dye as a model pollutant, in the presence of hydrogen peroxide (Fenton-like process) or ultraviolet light (photocatalytic process). The presence of iron oxide on the materials surface provided an increase in the catalytic activity of the composites when reactions were carried out in the presence of hydrogen peroxide (H2O2). The pure niobia was more effective for the reactions involving ultraviolet light.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceCatalysis Communications-
Palavras-chave: dc.subjectSynthetic niobia-
Palavras-chave: dc.subjectIron oxide-
Palavras-chave: dc.subjectUltraviolet light-
Palavras-chave: dc.subjectHydrogen peroxide-
Título: dc.titleSynthesis and characterization of iron/niobium composites: catalyst for dye wastewater treatments-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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