EXAFS study of the Fex/ZrO2 composite nanomaterials obtained by sol-gel synthesis

The local Zr and Fe arrangements in the nanocomposite system Fex/ZrO2 (x=0-0.2) obtained by sol-gel method were studied by EXAFS. The phase composition was found to vary significantly on iron loading. For the samples calcined at 500 or 600°C, at x≤0.01, the formed ZrO2 is a mixture of monoclinic and...

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Autores: Kriventsov, Vladimir, Kochubey, Dmitrii, Navío Santos, José Antonio, Hidalgo López, María del Carmen, Colón Ibáñez, Gerardo, Tsodikov, Mark, Maksimov, Yuri, Suzdalev, Igor
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2001
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/63510
Acceso en línea:http://hdl.handle.net/11441/63510
https://doi.org/10.1107/S0909049501000875
Access Level:acceso abierto
Palabra clave:EXAFS
Zirconia
Surface
Nanoparticles
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spelling EXAFS study of the Fex/ZrO2 composite nanomaterials obtained by sol-gel synthesisKriventsov, VladimirKochubey, DmitriiNavío Santos, José AntonioHidalgo López, María del CarmenColón Ibáñez, GerardoTsodikov, MarkMaksimov, YuriSuzdalev, IgorEXAFSZirconiaSurfaceNanoparticlesThe local Zr and Fe arrangements in the nanocomposite system Fex/ZrO2 (x=0-0.2) obtained by sol-gel method were studied by EXAFS. The phase composition was found to vary significantly on iron loading. For the samples calcined at 500 or 600°C, at x≤0.01, the formed ZrO2 is a mixture of monoclinic and tetragonal structures. Only tetragonal structure is revealed at x≥0.05 with the exception of Fe0.2/ZrO2, calcined at 500°C, where new non-typically short Zr-Zr distances (3.29, 3.43Å) were observed. At low iron loading (less than one monolayer) Fe3+ ions were found to localize within the pre-surface layers of ZrO2 nanoparticles showing property of isolated ions. For greater Fe loading, iron exhibits either two-dimensional layer structure or two-phase system.OTAN ENVIR.LG 971292Russian Foundation for Basic Research (RFBR) 00-03-32407aInternational Union of CrystallographyQuímica OrgánicaNATO/OTANRussian Foundation for Basic Research2001info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttp://hdl.handle.net/11441/63510https://doi.org/10.1107/S0909049501000875reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésJournal of Synchrotron Radiation, 8 (2), 528-530.ENVIR.LG 97129200-03-32407ahttp://dx.doi.org/10.1107/S0909049501000875info:eu-repo/semantics/openAccessoai:idus.us.es:11441/635102026-06-17T12:51:07Z
dc.title.none.fl_str_mv EXAFS study of the Fex/ZrO2 composite nanomaterials obtained by sol-gel synthesis
title EXAFS study of the Fex/ZrO2 composite nanomaterials obtained by sol-gel synthesis
spellingShingle EXAFS study of the Fex/ZrO2 composite nanomaterials obtained by sol-gel synthesis
Kriventsov, Vladimir
EXAFS
Zirconia
Surface
Nanoparticles
title_short EXAFS study of the Fex/ZrO2 composite nanomaterials obtained by sol-gel synthesis
title_full EXAFS study of the Fex/ZrO2 composite nanomaterials obtained by sol-gel synthesis
title_fullStr EXAFS study of the Fex/ZrO2 composite nanomaterials obtained by sol-gel synthesis
title_full_unstemmed EXAFS study of the Fex/ZrO2 composite nanomaterials obtained by sol-gel synthesis
title_sort EXAFS study of the Fex/ZrO2 composite nanomaterials obtained by sol-gel synthesis
dc.creator.none.fl_str_mv Kriventsov, Vladimir
Kochubey, Dmitrii
Navío Santos, José Antonio
Hidalgo López, María del Carmen
Colón Ibáñez, Gerardo
Tsodikov, Mark
Maksimov, Yuri
Suzdalev, Igor
author Kriventsov, Vladimir
author_facet Kriventsov, Vladimir
Kochubey, Dmitrii
Navío Santos, José Antonio
Hidalgo López, María del Carmen
Colón Ibáñez, Gerardo
Tsodikov, Mark
Maksimov, Yuri
Suzdalev, Igor
author_role author
author2 Kochubey, Dmitrii
Navío Santos, José Antonio
Hidalgo López, María del Carmen
Colón Ibáñez, Gerardo
Tsodikov, Mark
Maksimov, Yuri
Suzdalev, Igor
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Química Orgánica
NATO/OTAN
Russian Foundation for Basic Research
dc.subject.none.fl_str_mv EXAFS
Zirconia
Surface
Nanoparticles
topic EXAFS
Zirconia
Surface
Nanoparticles
description The local Zr and Fe arrangements in the nanocomposite system Fex/ZrO2 (x=0-0.2) obtained by sol-gel method were studied by EXAFS. The phase composition was found to vary significantly on iron loading. For the samples calcined at 500 or 600°C, at x≤0.01, the formed ZrO2 is a mixture of monoclinic and tetragonal structures. Only tetragonal structure is revealed at x≥0.05 with the exception of Fe0.2/ZrO2, calcined at 500°C, where new non-typically short Zr-Zr distances (3.29, 3.43Å) were observed. At low iron loading (less than one monolayer) Fe3+ ions were found to localize within the pre-surface layers of ZrO2 nanoparticles showing property of isolated ions. For greater Fe loading, iron exhibits either two-dimensional layer structure or two-phase system.
publishDate 2001
dc.date.none.fl_str_mv 2001
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11441/63510
https://doi.org/10.1107/S0909049501000875
url http://hdl.handle.net/11441/63510
https://doi.org/10.1107/S0909049501000875
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Journal of Synchrotron Radiation, 8 (2), 528-530.
ENVIR.LG 971292
00-03-32407a
http://dx.doi.org/10.1107/S0909049501000875
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv International Union of Crystallography
publisher.none.fl_str_mv International Union of Crystallography
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300719

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