Synthesis, characterization and catalytic evaluation of cubic ordered mesoporous iron-silicon oxides

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dc.contributor.authorMartins, T. S. [UNIFESP]
dc.contributor.authorMahmoud, A.
dc.contributor.authorCides da Silva, L. C.
dc.contributor.authorCosentino, I. C.
dc.contributor.authorTabacniks, M. H.
dc.contributor.authorMatos, J. R.
dc.contributor.authorFreire, R. S.
dc.contributor.authorFantini, M. C. A.
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionIPEN
dc.date.accessioned2016-01-24T14:05:39Z
dc.date.available2016-01-24T14:05:39Z
dc.date.issued2010-11-01
dc.description.abstractIron was successfully incorporated in FDU-1 type cubic ordered mesoporous silica by a simple direct synthesis route. the (Fe/FDU-1) samples were characterized by Rutherford back-scattering spectrometry (RBS), small angle X-ray scattering (SAXS). N(2) sorption isotherm, X-ray diffraction (XRD) and X-ray absorption spectroscopy (XAS). the resulting material presented an iron content of about 5%. Prepared at the usual acid pH of -0.3, the composite was mostly formed by amorphous silica and hematite with a quantity of Fe(2+) present in the structure. the samples prepared with adjusted pH values (2 and 3.5) were amorphous. the samples' average pore diameter was around 12.0 nm and BET specific surface area was of 680 m(2) g(-1). Although the iron-incorporated material presented larger lattice parameter, about 25 nm compared to pure FDU-1, the Fe/FDU-1 composite still maintained its cubic ordered fcc mesoporous structure before and after the template removal at 540 degrees C. the catalytic performance of Fe/FDU-1 was investigated in the catalytic oxidation of Black Remazol B dye using a catalytic ozonation process. the results indicated that Fe/FDU-1 prepared at the usual acid pH exhibited high catalytic activity in the mineralization of this pollutant when compared to the pure FDU-1. Fe(2)O(3) and Fe/FDU-1 prepared with higher pH of 2 and 3.5. (C) 2010 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniversidade Federal de São Paulo, Dept Ciencias Exatas & Terra, BR-09972270 São Paulo, Brazil
dc.description.affiliationUniv São Paulo, Inst Fis, BR-05315970 São Paulo, Brazil
dc.description.affiliationUniv São Paulo, Inst Quim, BR-05508900 São Paulo, Brazil
dc.description.affiliationCEPEMA USP, Ctr Capacitacao & Pesquisa Meio Ambiente, Cubatao, SP, Brazil
dc.description.affiliationIPEN, BR-05508900 São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Dept Ciencias Exatas & Terra, BR-09972270 São Paulo, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent713-719
dc.identifierhttp://dx.doi.org/10.1016/j.matchemphys.2010.07.042
dc.identifier.citationMaterials Chemistry and Physics. Lausanne: Elsevier Science Sa, v. 124, n. 1, p. 713-719, 2010.
dc.identifier.doi10.1016/j.matchemphys.2010.07.042
dc.identifier.issn0254-0584
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/33045
dc.identifier.wosWOS:000282607900128
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofMaterials Chemistry and Physics
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.rights.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.subjectMesoporous materialsen
dc.subjectIron oxideen
dc.subjectCatalysten
dc.subjectOzonation processen
dc.titleSynthesis, characterization and catalytic evaluation of cubic ordered mesoporous iron-silicon oxidesen
dc.typeinfo:eu-repo/semantics/article
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