Surface faceting and reconstruction of ceria nanoparticles

The surface atomic arrangement of metal oxides determines their physical and chemical properties, and the ability to control and optimize structural parameters is of crucial importance for many applications, in particular in heterogeneous catalysis and photocatalysis. Whereas the structures of macro...

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Autores: Yang, Chengwu, Yu, Xiaojuan, Heissler, Stefan, Nefedov, Alexei, Colussi, Sara, Llorca Piqué, Jordi|||0000-0002-7447-9582, Trovarelli, Alessandro, Wang, Yuemin, Woell, Christof
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/104140
Acceso en línea:https://hdl.handle.net/2117/104140
https://dx.doi.org/10.1002/anie.201609179
Access Level:acceso abierto
Palabra clave:Nanoparticles--chemistry
CeO2
CO adsorption
faceting
infrared reflection absorption spectroscopy (IRRAS)
nanorods
Nanopartícules
Àrees temàtiques de la UPC::Enginyeria química
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spelling Surface faceting and reconstruction of ceria nanoparticlesYang, ChengwuYu, XiaojuanHeissler, StefanNefedov, AlexeiColussi, SaraLlorca Piqué, Jordi|||0000-0002-7447-9582Trovarelli, AlessandroWang, YueminWoell, ChristofNanoparticles--chemistryCeO2CO adsorptionfacetinginfrared reflection absorption spectroscopy (IRRAS)nanorodsNanopartículesÀrees temàtiques de la UPC::Enginyeria químicaThe surface atomic arrangement of metal oxides determines their physical and chemical properties, and the ability to control and optimize structural parameters is of crucial importance for many applications, in particular in heterogeneous catalysis and photocatalysis. Whereas the structures of macroscopic single crystals can be determined with established methods, for nanoparticles (NPs), this is a challenging task. Herein, we describe the use of CO as a probe molecule to determine the structure of the surfaces exposed by rod-shaped ceria NPs. After calibrating the CO stretching frequencies using results obtained for different ceria single-crystal surfaces, we found that the rod-shaped NPs actually restructure and expose {111} nanofacets. This finding has important consequences for understanding the controversial surface chemistry of these catalytically highly active ceria NPs and paves the way for the predictive, rational design of catalytic materials at the nanoscale.20172017-01-0220172017-05-05journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/104140https://dx.doi.org/10.1002/anie.201609179reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1041402026-05-27T15:37:01Z
dc.title.none.fl_str_mv Surface faceting and reconstruction of ceria nanoparticles
title Surface faceting and reconstruction of ceria nanoparticles
spellingShingle Surface faceting and reconstruction of ceria nanoparticles
Yang, Chengwu
Nanoparticles--chemistry
CeO2
CO adsorption
faceting
infrared reflection absorption spectroscopy (IRRAS)
nanorods
Nanopartícules
Àrees temàtiques de la UPC::Enginyeria química
title_short Surface faceting and reconstruction of ceria nanoparticles
title_full Surface faceting and reconstruction of ceria nanoparticles
title_fullStr Surface faceting and reconstruction of ceria nanoparticles
title_full_unstemmed Surface faceting and reconstruction of ceria nanoparticles
title_sort Surface faceting and reconstruction of ceria nanoparticles
dc.creator.none.fl_str_mv Yang, Chengwu
Yu, Xiaojuan
Heissler, Stefan
Nefedov, Alexei
Colussi, Sara
Llorca Piqué, Jordi|||0000-0002-7447-9582
Trovarelli, Alessandro
Wang, Yuemin
Woell, Christof
author Yang, Chengwu
author_facet Yang, Chengwu
Yu, Xiaojuan
Heissler, Stefan
Nefedov, Alexei
Colussi, Sara
Llorca Piqué, Jordi|||0000-0002-7447-9582
Trovarelli, Alessandro
Wang, Yuemin
Woell, Christof
author_role author
author2 Yu, Xiaojuan
Heissler, Stefan
Nefedov, Alexei
Colussi, Sara
Llorca Piqué, Jordi|||0000-0002-7447-9582
Trovarelli, Alessandro
Wang, Yuemin
Woell, Christof
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Nanoparticles--chemistry
CeO2
CO adsorption
faceting
infrared reflection absorption spectroscopy (IRRAS)
nanorods
Nanopartícules
Àrees temàtiques de la UPC::Enginyeria química
topic Nanoparticles--chemistry
CeO2
CO adsorption
faceting
infrared reflection absorption spectroscopy (IRRAS)
nanorods
Nanopartícules
Àrees temàtiques de la UPC::Enginyeria química
description The surface atomic arrangement of metal oxides determines their physical and chemical properties, and the ability to control and optimize structural parameters is of crucial importance for many applications, in particular in heterogeneous catalysis and photocatalysis. Whereas the structures of macroscopic single crystals can be determined with established methods, for nanoparticles (NPs), this is a challenging task. Herein, we describe the use of CO as a probe molecule to determine the structure of the surfaces exposed by rod-shaped ceria NPs. After calibrating the CO stretching frequencies using results obtained for different ceria single-crystal surfaces, we found that the rod-shaped NPs actually restructure and expose {111} nanofacets. This finding has important consequences for understanding the controversial surface chemistry of these catalytically highly active ceria NPs and paves the way for the predictive, rational design of catalytic materials at the nanoscale.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-01-02
2017
2017-05-05
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/104140
https://dx.doi.org/10.1002/anie.201609179
url https://hdl.handle.net/2117/104140
https://dx.doi.org/10.1002/anie.201609179
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301629

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