You are in the accessibility menu

Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorSileo, E. E.-
dc.contributor.authorSolis, P. S.-
dc.contributor.authorPaiva-Santos, C. O.-
dc.identifier.citationPowder Diffraction. Newtown Sq: J C P D S-int Centre Diffraction Data, v. 18, n. 1, p. 50-55, 2003.-
dc.description.abstractThe capacity of goethite for Cd-II substitution has been explored in a series of synthetic samples prepared from Fe-III and Cd-II nitrate solutions aged 21 days in alkaline media. The total metal content ([ Fe] + [ Cd]) was 0.071 M in all preparations. The samples have been characterized by chemical and X-ray diffraction analysis; the morphology of the solids is described. The cell parameters for all samples were obtained by the Rietveld fits to the X-ray diffraction data. Refined structures show that for samples prepared at the final molar ratio mu(Cd)less than or equal to5.50 (expressed as mu(Cd) = 100X[Cd]/[Cd] + [Fe]), a (Cd, Fe)-goethite is the only crystalline product. In these samples, the unit cell parameters increased as a function of Cd concentration, indicating Cd incorporation in the structural frame. At the preparative ratio, mu(Cd)=7.03, the incorporation of Cd in the goethite structure is drastically reduced and a probable Cd-substituted hematite is formed together with the Fe,Cd-goethite. (C) 2003 International Centre for Diffraction Data.en
dc.publisherJ C P D S-int Centre Diffraction Data-
dc.sourceWeb of Science-
dc.subjectX-ray powder diffractionpt
dc.subjectRietveld analysispt
dc.subjectsubstituted goethitept
dc.subjectsubstituted hematitept
dc.titleStructural study of a series of synthetic goethites obtained in aqueous solutions containing cadmium(II) ionsen
dc.contributor.institutionUniv Buenos Aires-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniv Buenos Aires, Fac Ciências Exactas & Nat, INQUIMAE, RA-1428 Buenos Aires, DF, Argentina-
dc.description.affiliationUniv Estadual Paulista, UNESP, Inst Quim, BR-14801970 São Paulo, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Inst Quim, BR-14801970 São Paulo, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofPowder Diffraction-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.