There is life after coking for Ir nanocatalyst superlattices

Achieving superior performance of nanoparticle systems is one of the biggest challenges in catalysis. Two major phenomena, occurring during the reactions, hinder the development of the full potential of nanoparticle catalysts: sintering and contamination with carbon containing species, sometimes cal...

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Autores: Martínez Galera, Antonio Javier, Guo, Haojie, Jiménez Sánchez, Mariano D., Franchi, Stefano, Prince, Kevin C., Gómez Rodríguez, José María
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:10486/703368
Acceso en línea:http://hdl.handle.net/10486/703368
https://dx.doi.org/10.1007/s12274-022-4300-z
Access Level:acceso abierto
Palabra clave:Catalysis
Coke
Nanoparticles
Scanning tunneling microscopy (STM)
X-ray photoemission spectroscopy (XPS)
Física
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spelling There is life after coking for Ir nanocatalyst superlatticesMartínez Galera, Antonio JavierGuo, HaojieJiménez Sánchez, Mariano D.Franchi, StefanoPrince, Kevin C.Gómez Rodríguez, José MaríaCatalysisCokeNanoparticlesScanning tunneling microscopy (STM)X-ray photoemission spectroscopy (XPS)FísicaAchieving superior performance of nanoparticle systems is one of the biggest challenges in catalysis. Two major phenomena, occurring during the reactions, hinder the development of the full potential of nanoparticle catalysts: sintering and contamination with carbon containing species, sometimes called coking. Here, we demonstrate that Ir nanocrystals, arranged into periodic networks on hexagonal boron nitride (h-BN) supports, can be restored without sintering after contamination by persistent carbon. This restoration yields the complete removal of carbon from the nanocrystals, which keep their crystalline structure, allowing operation without degradation. These findings, together with the possibility of fine tuning the nanocrystals size, confer this nanoparticle system a great potential as a testbed to extract key information about catalysis-mediated oxidation reactions. For the case of the CO oxidation by O2, reaction of interest in environmental science and green energy production, the existence of chemical processes not observed before in other nanoparticle systems is demonstratedOpen access funding provided thanks to the CRUE-CSIC agreement with Springer NatureSpringerDepartamento de Física de MaterialesDepartamento de Física de la Materia Condensada20222022-06-14research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/703368https://dx.doi.org/10.1007/s12274-022-4300-zreponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/7033682026-06-23T12:46:27Z
dc.title.none.fl_str_mv There is life after coking for Ir nanocatalyst superlattices
title There is life after coking for Ir nanocatalyst superlattices
spellingShingle There is life after coking for Ir nanocatalyst superlattices
Martínez Galera, Antonio Javier
Catalysis
Coke
Nanoparticles
Scanning tunneling microscopy (STM)
X-ray photoemission spectroscopy (XPS)
Física
title_short There is life after coking for Ir nanocatalyst superlattices
title_full There is life after coking for Ir nanocatalyst superlattices
title_fullStr There is life after coking for Ir nanocatalyst superlattices
title_full_unstemmed There is life after coking for Ir nanocatalyst superlattices
title_sort There is life after coking for Ir nanocatalyst superlattices
dc.creator.none.fl_str_mv Martínez Galera, Antonio Javier
Guo, Haojie
Jiménez Sánchez, Mariano D.
Franchi, Stefano
Prince, Kevin C.
Gómez Rodríguez, José María
author Martínez Galera, Antonio Javier
author_facet Martínez Galera, Antonio Javier
Guo, Haojie
Jiménez Sánchez, Mariano D.
Franchi, Stefano
Prince, Kevin C.
Gómez Rodríguez, José María
author_role author
author2 Guo, Haojie
Jiménez Sánchez, Mariano D.
Franchi, Stefano
Prince, Kevin C.
Gómez Rodríguez, José María
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Física de Materiales
Departamento de Física de la Materia Condensada
dc.subject.none.fl_str_mv Catalysis
Coke
Nanoparticles
Scanning tunneling microscopy (STM)
X-ray photoemission spectroscopy (XPS)
Física
topic Catalysis
Coke
Nanoparticles
Scanning tunneling microscopy (STM)
X-ray photoemission spectroscopy (XPS)
Física
description Achieving superior performance of nanoparticle systems is one of the biggest challenges in catalysis. Two major phenomena, occurring during the reactions, hinder the development of the full potential of nanoparticle catalysts: sintering and contamination with carbon containing species, sometimes called coking. Here, we demonstrate that Ir nanocrystals, arranged into periodic networks on hexagonal boron nitride (h-BN) supports, can be restored without sintering after contamination by persistent carbon. This restoration yields the complete removal of carbon from the nanocrystals, which keep their crystalline structure, allowing operation without degradation. These findings, together with the possibility of fine tuning the nanocrystals size, confer this nanoparticle system a great potential as a testbed to extract key information about catalysis-mediated oxidation reactions. For the case of the CO oxidation by O2, reaction of interest in environmental science and green energy production, the existence of chemical processes not observed before in other nanoparticle systems is demonstrated
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-06-14
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/703368
https://dx.doi.org/10.1007/s12274-022-4300-z
url http://hdl.handle.net/10486/703368
https://dx.doi.org/10.1007/s12274-022-4300-z
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.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
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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