dc.contributor | Univ Buenos Aires | |
dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.date.accessioned | 2014-05-20T15:26:56Z | |
dc.date.accessioned | 2022-10-05T16:40:21Z | |
dc.date.available | 2014-05-20T15:26:56Z | |
dc.date.available | 2022-10-05T16:40:21Z | |
dc.date.created | 2014-05-20T15:26:56Z | |
dc.date.issued | 2003-03-01 | |
dc.identifier | Powder Diffraction. Newtown Sq: J C P D S-int Centre Diffraction Data, v. 18, n. 1, p. 50-55, 2003. | |
dc.identifier | 0885-7156 | |
dc.identifier | http://hdl.handle.net/11449/36996 | |
dc.identifier | 10.1154/1.1538188 | |
dc.identifier | WOS:000181517200011 | |
dc.identifier | WOS000181517200011.pdf | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/3908607 | |
dc.description.abstract | The 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. | |
dc.language | eng | |
dc.publisher | J C P D S-int Centre Diffraction Data | |
dc.relation | Powder Diffraction | |
dc.relation | 0.519 | |
dc.relation | 0,319 | |
dc.rights | Acesso restrito | |
dc.source | Web of Science | |
dc.subject | X-ray powder diffraction | |
dc.subject | Rietveld analysis | |
dc.subject | substituted goethite | |
dc.subject | cadmium | |
dc.subject | substituted hematite | |
dc.title | Structural study of a series of synthetic goethites obtained in aqueous solutions containing cadmium(II) ions | |
dc.type | Artigo | |