Electrically tunable reactivity of substrate-supported cobalt oxide nanocrystals

First-row transition metal oxides are promising materials for catalyzing the oxygen evolution reaction. Surface sensitive techniques provide a unique perspective allowing the study of the structure, adsorption sites, and reactivity of catalysts at the atomic scale, which furnishes rationalization an...

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Autores: Sánchez Grande, Ana, Nguyën, Huu Chuong, Lauwaet, Koen, Rodríguez Fernández, Jonathan, Carrasco, Esther, Cirera, Borja, Sun, Zhaozong, Urgel, José Ignacio, Miranda Soriano, Rodolfo, Lauritsen, Jeppe V., Gallego, José M., López, Nuria, Écija, David
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/719303
Acceso en línea:http://hdl.handle.net/10486/719303
https://dx.doi.org/10.1002/smll.202106407
Access Level:acceso abierto
Palabra clave:Cobalt
Dynamic structural changes
Oxide
Oxygen evolution reaction
Scanning tunneling microscopy
Física
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spelling Electrically tunable reactivity of substrate-supported cobalt oxide nanocrystalsSánchez Grande, AnaNguyën, Huu ChuongLauwaet, KoenRodríguez Fernández, JonathanCarrasco, EstherCirera, BorjaSun, ZhaozongUrgel, José IgnacioMiranda Soriano, RodolfoLauritsen, Jeppe V.Gallego, José M.López, NuriaÉcija, DavidCobaltDynamic structural changesOxideOxygen evolution reactionScanning tunneling microscopyFísicaFirst-row transition metal oxides are promising materials for catalyzing the oxygen evolution reaction. Surface sensitive techniques provide a unique perspective allowing the study of the structure, adsorption sites, and reactivity of catalysts at the atomic scale, which furnishes rationalization and improves the design of highly efficient catalytic materials. Here, a scanning probe microscopy study complemented by density functional theory on the structural and electronic properties of CoO nanoislands grown on Au(111) is reported. Two distinct phases are observed: The most extended displays a Moiré pattern (α-region), while the less abundant is 1Co:1Au coincidental (β-region). As a result of the surface registry, in the β-region the oxide adlayer is compressed by 9%, increasing the unoccupied local density of states and enhancing the selective water adsorption at low temperature through a cobalt inversion mechanism. Tip-induced voltage pulses irreversibly transform α- into β-regions, thus opening avenues to modify the structure and reactivity of transition metal oxides by external stimuli like electric fieldsWork supported by the European Union under the H2020 FET-PROACT A-LEAF (Artificial-Leaf) project (Grant Agreement No. 732840). We thank Prof. Aleksandra Vojvodic for helpful discussion about her previous works about the nature of CoO nanoislands on Au(111). The authors thankfully acknowledge the computer resources at MareNostrum and the technical support provided by the Barcelona Supercomputing Center (QS-2019-3-0029 Advanced atomistic simulations in (electro)-catalysis for a circular economy)Wiley20222022-03-01research articlehttp://purl.org/coar/resource_type/c_2df8fbb1AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/719303https://dx.doi.org/10.1002/smll.202106407reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengEuropean Commission http://dx.doi.org/10.13039/501100000780 Horizon 2020 Framework Programme 732840open accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/7193032026-06-23T12:46:27Z
dc.title.none.fl_str_mv Electrically tunable reactivity of substrate-supported cobalt oxide nanocrystals
title Electrically tunable reactivity of substrate-supported cobalt oxide nanocrystals
spellingShingle Electrically tunable reactivity of substrate-supported cobalt oxide nanocrystals
Sánchez Grande, Ana
Cobalt
Dynamic structural changes
Oxide
Oxygen evolution reaction
Scanning tunneling microscopy
Física
title_short Electrically tunable reactivity of substrate-supported cobalt oxide nanocrystals
title_full Electrically tunable reactivity of substrate-supported cobalt oxide nanocrystals
title_fullStr Electrically tunable reactivity of substrate-supported cobalt oxide nanocrystals
title_full_unstemmed Electrically tunable reactivity of substrate-supported cobalt oxide nanocrystals
title_sort Electrically tunable reactivity of substrate-supported cobalt oxide nanocrystals
dc.creator.none.fl_str_mv Sánchez Grande, Ana
Nguyën, Huu Chuong
Lauwaet, Koen
Rodríguez Fernández, Jonathan
Carrasco, Esther
Cirera, Borja
Sun, Zhaozong
Urgel, José Ignacio
Miranda Soriano, Rodolfo
Lauritsen, Jeppe V.
Gallego, José M.
López, Nuria
Écija, David
author Sánchez Grande, Ana
author_facet Sánchez Grande, Ana
Nguyën, Huu Chuong
Lauwaet, Koen
Rodríguez Fernández, Jonathan
Carrasco, Esther
Cirera, Borja
Sun, Zhaozong
Urgel, José Ignacio
Miranda Soriano, Rodolfo
Lauritsen, Jeppe V.
Gallego, José M.
López, Nuria
Écija, David
author_role author
author2 Nguyën, Huu Chuong
Lauwaet, Koen
Rodríguez Fernández, Jonathan
Carrasco, Esther
Cirera, Borja
Sun, Zhaozong
Urgel, José Ignacio
Miranda Soriano, Rodolfo
Lauritsen, Jeppe V.
Gallego, José M.
López, Nuria
Écija, David
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Cobalt
Dynamic structural changes
Oxide
Oxygen evolution reaction
Scanning tunneling microscopy
Física
topic Cobalt
Dynamic structural changes
Oxide
Oxygen evolution reaction
Scanning tunneling microscopy
Física
description First-row transition metal oxides are promising materials for catalyzing the oxygen evolution reaction. Surface sensitive techniques provide a unique perspective allowing the study of the structure, adsorption sites, and reactivity of catalysts at the atomic scale, which furnishes rationalization and improves the design of highly efficient catalytic materials. Here, a scanning probe microscopy study complemented by density functional theory on the structural and electronic properties of CoO nanoislands grown on Au(111) is reported. Two distinct phases are observed: The most extended displays a Moiré pattern (α-region), while the less abundant is 1Co:1Au coincidental (β-region). As a result of the surface registry, in the β-region the oxide adlayer is compressed by 9%, increasing the unoccupied local density of states and enhancing the selective water adsorption at low temperature through a cobalt inversion mechanism. Tip-induced voltage pulses irreversibly transform α- into β-regions, thus opening avenues to modify the structure and reactivity of transition metal oxides by external stimuli like electric fields
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-03-01
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
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 http://hdl.handle.net/10486/719303
https://dx.doi.org/10.1002/smll.202106407
url http://hdl.handle.net/10486/719303
https://dx.doi.org/10.1002/smll.202106407
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission http://dx.doi.org/10.13039/501100000780 Horizon 2020 Framework Programme 732840
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.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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