Surface Stabilizes Ceria in Unexpected Stoichiometry

Autores
Olbrich, Reinhard; Murgida, Gustavo Ezequiel; Ferrari, Valeria Paola; Barth, Clemens; Llois, Ana Maria; Reichling, Michael; Ganduglia Pirovano, Maria Veronica
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The prototype reducible oxide ceria is known for its rich phase diagram and its ability to absorb and deliver oxygen. The high oxygen storage capacity is the basis for the use of ceria in catalytic and sensor applications where the surface plays a paramount role for device functionality. By direct imaging, we reveal the reconstruction of the ceria (111) surface in five periodic structures representing reduction stages ranging from CeO2 to Ce2O3. Theoretical modeling shows that the (√7 × 3)R19.1° reconstruction, representing the previously unknown Ce3O5 stoichiometry, is stabilized at the surface but cannot be assigned to a bulk structure. Statistical modeling explains the thermodynamic stability of surface phases depending on the oxygen chemical potential and the coexistence of certain phases over a range of temperatures. These results are crucial for understanding geometric and electronic structure-function correlations in nanostructured ceria and the rational design of novel ceria-based functional systems.
Fil: Olbrich, Reinhard. Universität Osnabrück; Alemania
Fil: Murgida, Gustavo Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Constituyentes); Argentina
Fil: Ferrari, Valeria Paola. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Barth, Clemens. Aix-Marseille Université; Francia
Fil: Llois, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Constituyentes); Argentina
Fil: Reichling, Michael. Universität Osnabrück; Alemania
Fil: Ganduglia Pirovano, Maria Veronica. Consejo Superior de Investigaciones Científicas. Instituto de Catálisis y Petroleoquímica; España
Materia
CERIA
SURFACE
MICROSCOPY
OXIGEN VACANCIES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/72868
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Surface Stabilizes Ceria in Unexpected StoichiometryOlbrich, ReinhardMurgida, Gustavo EzequielFerrari, Valeria PaolaBarth, ClemensLlois, Ana MariaReichling, MichaelGanduglia Pirovano, Maria VeronicaCERIASURFACEMICROSCOPYOXIGEN VACANCIEShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The prototype reducible oxide ceria is known for its rich phase diagram and its ability to absorb and deliver oxygen. The high oxygen storage capacity is the basis for the use of ceria in catalytic and sensor applications where the surface plays a paramount role for device functionality. By direct imaging, we reveal the reconstruction of the ceria (111) surface in five periodic structures representing reduction stages ranging from CeO2 to Ce2O3. Theoretical modeling shows that the (√7 × 3)R19.1° reconstruction, representing the previously unknown Ce3O5 stoichiometry, is stabilized at the surface but cannot be assigned to a bulk structure. Statistical modeling explains the thermodynamic stability of surface phases depending on the oxygen chemical potential and the coexistence of certain phases over a range of temperatures. These results are crucial for understanding geometric and electronic structure-function correlations in nanostructured ceria and the rational design of novel ceria-based functional systems.Fil: Olbrich, Reinhard. Universität Osnabrück; AlemaniaFil: Murgida, Gustavo Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Constituyentes); ArgentinaFil: Ferrari, Valeria Paola. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Barth, Clemens. Aix-Marseille Université; FranciaFil: Llois, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Constituyentes); ArgentinaFil: Reichling, Michael. Universität Osnabrück; AlemaniaFil: Ganduglia Pirovano, Maria Veronica. Consejo Superior de Investigaciones Científicas. Instituto de Catálisis y Petroleoquímica; EspañaAmerican Chemical Society2017-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/72868Olbrich, Reinhard; Murgida, Gustavo Ezequiel; Ferrari, Valeria Paola; Barth, Clemens; Llois, Ana Maria; et al.; Surface Stabilizes Ceria in Unexpected Stoichiometry; American Chemical Society; Journal of Physical Chemistry C; 121; 12; 3-2017; 6844-68511932-7447CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.7b00956info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jpcc.7b00956info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:09:38Zoai:ri.conicet.gov.ar:11336/72868instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:09:38.671CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Surface Stabilizes Ceria in Unexpected Stoichiometry
title Surface Stabilizes Ceria in Unexpected Stoichiometry
spellingShingle Surface Stabilizes Ceria in Unexpected Stoichiometry
Olbrich, Reinhard
CERIA
SURFACE
MICROSCOPY
OXIGEN VACANCIES
title_short Surface Stabilizes Ceria in Unexpected Stoichiometry
title_full Surface Stabilizes Ceria in Unexpected Stoichiometry
title_fullStr Surface Stabilizes Ceria in Unexpected Stoichiometry
title_full_unstemmed Surface Stabilizes Ceria in Unexpected Stoichiometry
title_sort Surface Stabilizes Ceria in Unexpected Stoichiometry
dc.creator.none.fl_str_mv Olbrich, Reinhard
Murgida, Gustavo Ezequiel
Ferrari, Valeria Paola
Barth, Clemens
Llois, Ana Maria
Reichling, Michael
Ganduglia Pirovano, Maria Veronica
author Olbrich, Reinhard
author_facet Olbrich, Reinhard
Murgida, Gustavo Ezequiel
Ferrari, Valeria Paola
Barth, Clemens
Llois, Ana Maria
Reichling, Michael
Ganduglia Pirovano, Maria Veronica
author_role author
author2 Murgida, Gustavo Ezequiel
Ferrari, Valeria Paola
Barth, Clemens
Llois, Ana Maria
Reichling, Michael
Ganduglia Pirovano, Maria Veronica
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv CERIA
SURFACE
MICROSCOPY
OXIGEN VACANCIES
topic CERIA
SURFACE
MICROSCOPY
OXIGEN VACANCIES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The prototype reducible oxide ceria is known for its rich phase diagram and its ability to absorb and deliver oxygen. The high oxygen storage capacity is the basis for the use of ceria in catalytic and sensor applications where the surface plays a paramount role for device functionality. By direct imaging, we reveal the reconstruction of the ceria (111) surface in five periodic structures representing reduction stages ranging from CeO2 to Ce2O3. Theoretical modeling shows that the (√7 × 3)R19.1° reconstruction, representing the previously unknown Ce3O5 stoichiometry, is stabilized at the surface but cannot be assigned to a bulk structure. Statistical modeling explains the thermodynamic stability of surface phases depending on the oxygen chemical potential and the coexistence of certain phases over a range of temperatures. These results are crucial for understanding geometric and electronic structure-function correlations in nanostructured ceria and the rational design of novel ceria-based functional systems.
Fil: Olbrich, Reinhard. Universität Osnabrück; Alemania
Fil: Murgida, Gustavo Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Constituyentes); Argentina
Fil: Ferrari, Valeria Paola. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Barth, Clemens. Aix-Marseille Université; Francia
Fil: Llois, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Constituyentes); Argentina
Fil: Reichling, Michael. Universität Osnabrück; Alemania
Fil: Ganduglia Pirovano, Maria Veronica. Consejo Superior de Investigaciones Científicas. Instituto de Catálisis y Petroleoquímica; España
description The prototype reducible oxide ceria is known for its rich phase diagram and its ability to absorb and deliver oxygen. The high oxygen storage capacity is the basis for the use of ceria in catalytic and sensor applications where the surface plays a paramount role for device functionality. By direct imaging, we reveal the reconstruction of the ceria (111) surface in five periodic structures representing reduction stages ranging from CeO2 to Ce2O3. Theoretical modeling shows that the (√7 × 3)R19.1° reconstruction, representing the previously unknown Ce3O5 stoichiometry, is stabilized at the surface but cannot be assigned to a bulk structure. Statistical modeling explains the thermodynamic stability of surface phases depending on the oxygen chemical potential and the coexistence of certain phases over a range of temperatures. These results are crucial for understanding geometric and electronic structure-function correlations in nanostructured ceria and the rational design of novel ceria-based functional systems.
publishDate 2017
dc.date.none.fl_str_mv 2017-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/72868
Olbrich, Reinhard; Murgida, Gustavo Ezequiel; Ferrari, Valeria Paola; Barth, Clemens; Llois, Ana Maria; et al.; Surface Stabilizes Ceria in Unexpected Stoichiometry; American Chemical Society; Journal of Physical Chemistry C; 121; 12; 3-2017; 6844-6851
1932-7447
CONICET Digital
CONICET
url http://hdl.handle.net/11336/72868
identifier_str_mv Olbrich, Reinhard; Murgida, Gustavo Ezequiel; Ferrari, Valeria Paola; Barth, Clemens; Llois, Ana Maria; et al.; Surface Stabilizes Ceria in Unexpected Stoichiometry; American Chemical Society; Journal of Physical Chemistry C; 121; 12; 3-2017; 6844-6851
1932-7447
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.7b00956
info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.jpcc.7b00956
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.993085

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