Spectroscopic and thermal contribution to the structural characterization of vandenbrandeite
- Autores
- Botto, Irma Lía; Barone, Vicente Luis; Sanchez, M. A.
- Año de publicación
- 2002
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The vibrational (IR and Raman) spectrum of Vandenbrandeite, Cu[UO₂(OH)₄], has been recorded and discussed on the basis of structural considerations through the use of empirical expressions. As the H-bonding in the lattice is poorly known, the characteristics of this bond has been analyzed with the aid of H/D isotope exchange, thermal assays and electron microscopy. Samples are practically amorphous to XRD up to ∼700°C whereas crystals morphologically different by SEM microscopy and well characterized by XRD technique are observed from ∼800°C. Vibrational spectroscopy reveals that the atomic arrangement in the structure remains largely unaffected as the dehydration proceeds, suggesting a topochemically controlled process. EPR spectroscopy suggests a disordered distribution of Cu(II) ions as temperature increases. Finally, thermal dehydroxylation and paragenesis of the copper-uranyl oxide hydrate are correlated.
Centro de Química Inorgánica - Materia
-
Química
Oxide
Polymer
Spectroscopy
Microscopy
Electron Microscopy - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/135763
Ver los metadatos del registro completo
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Spectroscopic and thermal contribution to the structural characterization of vandenbrandeiteBotto, Irma LíaBarone, Vicente LuisSanchez, M. A.QuímicaOxidePolymerSpectroscopyMicroscopyElectron MicroscopyThe vibrational (IR and Raman) spectrum of Vandenbrandeite, Cu[UO₂(OH)₄], has been recorded and discussed on the basis of structural considerations through the use of empirical expressions. As the H-bonding in the lattice is poorly known, the characteristics of this bond has been analyzed with the aid of H/D isotope exchange, thermal assays and electron microscopy. Samples are practically amorphous to XRD up to ∼700°C whereas crystals morphologically different by SEM microscopy and well characterized by XRD technique are observed from ∼800°C. Vibrational spectroscopy reveals that the atomic arrangement in the structure remains largely unaffected as the dehydration proceeds, suggesting a topochemically controlled process. EPR spectroscopy suggests a disordered distribution of Cu(II) ions as temperature increases. Finally, thermal dehydroxylation and paragenesis of the copper-uranyl oxide hydrate are correlated.Centro de Química Inorgánica2002-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf177-183http://sedici.unlp.edu.ar/handle/10915/135763enginfo:eu-repo/semantics/altIdentifier/issn/0022-2461info:eu-repo/semantics/altIdentifier/issn/1573-4803info:eu-repo/semantics/altIdentifier/doi/10.1023/a:1013182917829info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:31:57Zoai:sedici.unlp.edu.ar:10915/135763Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:31:58.202SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Spectroscopic and thermal contribution to the structural characterization of vandenbrandeite |
title |
Spectroscopic and thermal contribution to the structural characterization of vandenbrandeite |
spellingShingle |
Spectroscopic and thermal contribution to the structural characterization of vandenbrandeite Botto, Irma Lía Química Oxide Polymer Spectroscopy Microscopy Electron Microscopy |
title_short |
Spectroscopic and thermal contribution to the structural characterization of vandenbrandeite |
title_full |
Spectroscopic and thermal contribution to the structural characterization of vandenbrandeite |
title_fullStr |
Spectroscopic and thermal contribution to the structural characterization of vandenbrandeite |
title_full_unstemmed |
Spectroscopic and thermal contribution to the structural characterization of vandenbrandeite |
title_sort |
Spectroscopic and thermal contribution to the structural characterization of vandenbrandeite |
dc.creator.none.fl_str_mv |
Botto, Irma Lía Barone, Vicente Luis Sanchez, M. A. |
author |
Botto, Irma Lía |
author_facet |
Botto, Irma Lía Barone, Vicente Luis Sanchez, M. A. |
author_role |
author |
author2 |
Barone, Vicente Luis Sanchez, M. A. |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Química Oxide Polymer Spectroscopy Microscopy Electron Microscopy |
topic |
Química Oxide Polymer Spectroscopy Microscopy Electron Microscopy |
dc.description.none.fl_txt_mv |
The vibrational (IR and Raman) spectrum of Vandenbrandeite, Cu[UO₂(OH)₄], has been recorded and discussed on the basis of structural considerations through the use of empirical expressions. As the H-bonding in the lattice is poorly known, the characteristics of this bond has been analyzed with the aid of H/D isotope exchange, thermal assays and electron microscopy. Samples are practically amorphous to XRD up to ∼700°C whereas crystals morphologically different by SEM microscopy and well characterized by XRD technique are observed from ∼800°C. Vibrational spectroscopy reveals that the atomic arrangement in the structure remains largely unaffected as the dehydration proceeds, suggesting a topochemically controlled process. EPR spectroscopy suggests a disordered distribution of Cu(II) ions as temperature increases. Finally, thermal dehydroxylation and paragenesis of the copper-uranyl oxide hydrate are correlated. Centro de Química Inorgánica |
description |
The vibrational (IR and Raman) spectrum of Vandenbrandeite, Cu[UO₂(OH)₄], has been recorded and discussed on the basis of structural considerations through the use of empirical expressions. As the H-bonding in the lattice is poorly known, the characteristics of this bond has been analyzed with the aid of H/D isotope exchange, thermal assays and electron microscopy. Samples are practically amorphous to XRD up to ∼700°C whereas crystals morphologically different by SEM microscopy and well characterized by XRD technique are observed from ∼800°C. Vibrational spectroscopy reveals that the atomic arrangement in the structure remains largely unaffected as the dehydration proceeds, suggesting a topochemically controlled process. EPR spectroscopy suggests a disordered distribution of Cu(II) ions as temperature increases. Finally, thermal dehydroxylation and paragenesis of the copper-uranyl oxide hydrate are correlated. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002-01 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/135763 |
url |
http://sedici.unlp.edu.ar/handle/10915/135763 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0022-2461 info:eu-repo/semantics/altIdentifier/issn/1573-4803 info:eu-repo/semantics/altIdentifier/doi/10.1023/a:1013182917829 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
eu_rights_str_mv |
openAccess |
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http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
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application/pdf 177-183 |
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