Binary copper-bismuth catalysts for the electrochemical reduction of CO2: study on surface properties and catalytic activity

A series of CuBi catalysts were prepared with different Bi loadings and tested for the electrochemical reduction of CO2 (ERCO2). The developed catalysts were tested on a filter-press cell, and the influence of the catholyte on the catalytic performance was assessed. Catalyst #20C was found to be ver...

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Autores: Azenha, Cátia, Mateos Pedrero, Cecilia, Álvarez Guerra, Manuel|||0000-0002-3546-584X, Irabien Gulías, Ángel|||0000-0002-2411-4163, Mendes, Adélio
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/24960
Acceso en línea:http://hdl.handle.net/10902/24960
Access Level:acceso abierto
Palabra clave:CO2 electroreduction
CuBi catalysts
Propane
Selectivity
Surface properties
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spelling Binary copper-bismuth catalysts for the electrochemical reduction of CO2: study on surface properties and catalytic activityAzenha, CátiaMateos Pedrero, CeciliaÁlvarez Guerra, Manuel|||0000-0002-3546-584XIrabien Gulías, Ángel|||0000-0002-2411-4163Mendes, AdélioCO2 electroreductionCuBi catalystsPropaneSelectivitySurface propertiesA series of CuBi catalysts were prepared with different Bi loadings and tested for the electrochemical reduction of CO2 (ERCO2). The developed catalysts were tested on a filter-press cell, and the influence of the catholyte on the catalytic performance was assessed. Catalyst #20C was found to be very selective for formate production, with a faradaic efficiency (FE) of 86.4 %, when Cl– ions are present in the catholyte solution. The presence of weak CO2 adsorption sites on the catalyst surface favors the formation of non-coordinated and monodentate carbonates after CO2 adsorption, resulting in enhanced formate formation through an outer-sphere mechanism. For catalyst #50C, an unprecedented propane selectivity was recorded (FE of 85.4 %), being the first high-efficiency catalyst for the ERCO2 to propane ever reported. This remarkable catalytic behavior was attributed to strong CO2 adsorption sites on the catalyst surface and higher CO2 and CO adsorption capacity. It is also proposed that a bidentate carbonate is a key intermediate for the ERCO2 to propane, which is preferably formed when strong Lewis acid and base sites are present on the catalyst surface.C. Azenha is grateful to the Portuguese Foundation for Science and Technology (FCT) for the doctoral grant (reference SFRH/BD/128768/2017). This work was financially supported by: LA/P/0045/2020 (ALiCE), UIDB/00511/2020 and UIDP/00511/2020 (LEPABE), funded by national funds through FCT/MCTES (PIDDAC); and was performed under the project “SunStorage - Harvesting and storage of solar energy”, POCI-01-0145-FEDER-016387, funded by FEDER funds through COMPETE2020 – Programa Operacional Competitividade e Internacionalização (POCI) and by national funds (PIDDAC) through FCT/MCTESElsevierUniversidad de Cantabria20222022-10-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttp://hdl.handle.net/10902/24960Chemical Engineering Journal, 2022, 445, 136575reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial 4.0 Internationalhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/249602026-06-02T12:39:31Z
dc.title.none.fl_str_mv Binary copper-bismuth catalysts for the electrochemical reduction of CO2: study on surface properties and catalytic activity
title Binary copper-bismuth catalysts for the electrochemical reduction of CO2: study on surface properties and catalytic activity
spellingShingle Binary copper-bismuth catalysts for the electrochemical reduction of CO2: study on surface properties and catalytic activity
Azenha, Cátia
CO2 electroreduction
CuBi catalysts
Propane
Selectivity
Surface properties
title_short Binary copper-bismuth catalysts for the electrochemical reduction of CO2: study on surface properties and catalytic activity
title_full Binary copper-bismuth catalysts for the electrochemical reduction of CO2: study on surface properties and catalytic activity
title_fullStr Binary copper-bismuth catalysts for the electrochemical reduction of CO2: study on surface properties and catalytic activity
title_full_unstemmed Binary copper-bismuth catalysts for the electrochemical reduction of CO2: study on surface properties and catalytic activity
title_sort Binary copper-bismuth catalysts for the electrochemical reduction of CO2: study on surface properties and catalytic activity
dc.creator.none.fl_str_mv Azenha, Cátia
Mateos Pedrero, Cecilia
Álvarez Guerra, Manuel|||0000-0002-3546-584X
Irabien Gulías, Ángel|||0000-0002-2411-4163
Mendes, Adélio
author Azenha, Cátia
author_facet Azenha, Cátia
Mateos Pedrero, Cecilia
Álvarez Guerra, Manuel|||0000-0002-3546-584X
Irabien Gulías, Ángel|||0000-0002-2411-4163
Mendes, Adélio
author_role author
author2 Mateos Pedrero, Cecilia
Álvarez Guerra, Manuel|||0000-0002-3546-584X
Irabien Gulías, Ángel|||0000-0002-2411-4163
Mendes, Adélio
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidad de Cantabria
dc.subject.none.fl_str_mv CO2 electroreduction
CuBi catalysts
Propane
Selectivity
Surface properties
topic CO2 electroreduction
CuBi catalysts
Propane
Selectivity
Surface properties
description A series of CuBi catalysts were prepared with different Bi loadings and tested for the electrochemical reduction of CO2 (ERCO2). The developed catalysts were tested on a filter-press cell, and the influence of the catholyte on the catalytic performance was assessed. Catalyst #20C was found to be very selective for formate production, with a faradaic efficiency (FE) of 86.4 %, when Cl– ions are present in the catholyte solution. The presence of weak CO2 adsorption sites on the catalyst surface favors the formation of non-coordinated and monodentate carbonates after CO2 adsorption, resulting in enhanced formate formation through an outer-sphere mechanism. For catalyst #50C, an unprecedented propane selectivity was recorded (FE of 85.4 %), being the first high-efficiency catalyst for the ERCO2 to propane ever reported. This remarkable catalytic behavior was attributed to strong CO2 adsorption sites on the catalyst surface and higher CO2 and CO adsorption capacity. It is also proposed that a bidentate carbonate is a key intermediate for the ERCO2 to propane, which is preferably formed when strong Lewis acid and base sites are present on the catalyst surface.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-10-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10902/24960
url http://hdl.handle.net/10902/24960
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
Attribution-NonCommercial 4.0 International
http://creativecommons.org/licenses/by-nc/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
Attribution-NonCommercial 4.0 International
http://creativecommons.org/licenses/by-nc/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Chemical Engineering Journal, 2022, 445, 136575
reponame:UCrea Repositorio Abierto de la Universidad de Cantabria
instname:Universidad de Cantabria (UC)
instname_str Universidad de Cantabria (UC)
reponame_str UCrea Repositorio Abierto de la Universidad de Cantabria
collection UCrea Repositorio Abierto de la Universidad de Cantabria
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301629

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