In situ photodeposition of ultra-small palladium particles on TiO2

In situ and operando investigation of photocatalysts plays a fundamental role in understanding the processes of active phase formation and the mechanisms of catalytic reactions, which is crucial for the rational design of more efficient materials. Using a custom-made operando photocatalytic cell, an...

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Autores: Kozyr, Elizaveta|||0000-0001-9308-5338, Martí-Sánchez, Sara|||0000-0003-4283-1489, Skorynina, A.|||0000-0001-9844-0220, Arbiol i Cobos, Jordi|||0000-0002-0695-1726, Escudero, Carlos|||0000-0001-8716-9391, Mino, Lorenzo|||0000-0002-9882-8361, Bugaev, Aram|||0000-0001-8273-2560
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:302393
Acceso en línea:https://ddd.uab.cat/record/302393
https://dx.doi.org/urn:doi:10.1107/S1600577524004788
Access Level:acceso abierto
Palabra clave:Photocatalysis
Pd/TiO2
Operando spectroscopy
XANES
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spelling In situ photodeposition of ultra-small palladium particles on TiO2Kozyr, Elizaveta|||0000-0001-9308-5338Martí-Sánchez, Sara|||0000-0003-4283-1489Skorynina, A.|||0000-0001-9844-0220Arbiol i Cobos, Jordi|||0000-0002-0695-1726Escudero, Carlos|||0000-0001-8716-9391Mino, Lorenzo|||0000-0002-9882-8361Bugaev, Aram|||0000-0001-8273-2560PhotocatalysisPd/TiO2Operando spectroscopyXANESIn situ and operando investigation of photocatalysts plays a fundamental role in understanding the processes of active phase formation and the mechanisms of catalytic reactions, which is crucial for the rational design of more efficient materials. Using a custom-made operando photocatalytic cell, an in situ procedure to follow the formation steps of Pd/TiO2 photocatalyst by synchrotron-based X-ray absorption spectroscopy (XAS) is proposed. The procedure resulted in the formation of ∼1nm Pd particles with a much narrower size distribution and homogeneous spreading over TiO2 support compared with the samples generated in a conventional batch reactor. The combination of in situ XAS spectroscopy with high-angle annular dark-field scanning transmission electron microscopy demonstrated the formation of single-atom Pd(0) sites on TiO2 as the initial step of the photodeposition process. Palladium hydride particles were observed for all investigated samples upon exposure to formic acid solutions. 22024-01-0120242024-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/302393https://dx.doi.org/urn:doi:10.1107/S1600577524004788reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengEuropean Commission https://doi.org/10.13039/501100000780 101058414Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2021/SGR-00457Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 CEX2021-001214-Sopen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:3023932026-06-06T12:50:31Z
dc.title.none.fl_str_mv In situ photodeposition of ultra-small palladium particles on TiO2
title In situ photodeposition of ultra-small palladium particles on TiO2
spellingShingle In situ photodeposition of ultra-small palladium particles on TiO2
Kozyr, Elizaveta|||0000-0001-9308-5338
Photocatalysis
Pd/TiO2
Operando spectroscopy
XANES
title_short In situ photodeposition of ultra-small palladium particles on TiO2
title_full In situ photodeposition of ultra-small palladium particles on TiO2
title_fullStr In situ photodeposition of ultra-small palladium particles on TiO2
title_full_unstemmed In situ photodeposition of ultra-small palladium particles on TiO2
title_sort In situ photodeposition of ultra-small palladium particles on TiO2
dc.creator.none.fl_str_mv Kozyr, Elizaveta|||0000-0001-9308-5338
Martí-Sánchez, Sara|||0000-0003-4283-1489
Skorynina, A.|||0000-0001-9844-0220
Arbiol i Cobos, Jordi|||0000-0002-0695-1726
Escudero, Carlos|||0000-0001-8716-9391
Mino, Lorenzo|||0000-0002-9882-8361
Bugaev, Aram|||0000-0001-8273-2560
author Kozyr, Elizaveta|||0000-0001-9308-5338
author_facet Kozyr, Elizaveta|||0000-0001-9308-5338
Martí-Sánchez, Sara|||0000-0003-4283-1489
Skorynina, A.|||0000-0001-9844-0220
Arbiol i Cobos, Jordi|||0000-0002-0695-1726
Escudero, Carlos|||0000-0001-8716-9391
Mino, Lorenzo|||0000-0002-9882-8361
Bugaev, Aram|||0000-0001-8273-2560
author_role author
author2 Martí-Sánchez, Sara|||0000-0003-4283-1489
Skorynina, A.|||0000-0001-9844-0220
Arbiol i Cobos, Jordi|||0000-0002-0695-1726
Escudero, Carlos|||0000-0001-8716-9391
Mino, Lorenzo|||0000-0002-9882-8361
Bugaev, Aram|||0000-0001-8273-2560
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Photocatalysis
Pd/TiO2
Operando spectroscopy
XANES
topic Photocatalysis
Pd/TiO2
Operando spectroscopy
XANES
description In situ and operando investigation of photocatalysts plays a fundamental role in understanding the processes of active phase formation and the mechanisms of catalytic reactions, which is crucial for the rational design of more efficient materials. Using a custom-made operando photocatalytic cell, an in situ procedure to follow the formation steps of Pd/TiO2 photocatalyst by synchrotron-based X-ray absorption spectroscopy (XAS) is proposed. The procedure resulted in the formation of ∼1nm Pd particles with a much narrower size distribution and homogeneous spreading over TiO2 support compared with the samples generated in a conventional batch reactor. The combination of in situ XAS spectroscopy with high-angle annular dark-field scanning transmission electron microscopy demonstrated the formation of single-atom Pd(0) sites on TiO2 as the initial step of the photodeposition process. Palladium hydride particles were observed for all investigated samples upon exposure to formic acid solutions.
publishDate 2024
dc.date.none.fl_str_mv 2
2024-01-01
2024
2024-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
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 https://ddd.uab.cat/record/302393
https://dx.doi.org/urn:doi:10.1107/S1600577524004788
url https://ddd.uab.cat/record/302393
https://dx.doi.org/urn:doi:10.1107/S1600577524004788
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission https://doi.org/10.13039/501100000780 101058414
Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2021/SGR-00457
Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 CEX2021-001214-S
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
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
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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