Tailoring gas-phase CO2 electroreduction selectivity to hydrocarbons at Cu nanoparticles

Copper-based surfaces appear as the most active catalysts for CO2 electroreduction to hydrocarbons, even though formation rates and efficiencies still need to be improved. The aim of the present work is to evaluate the continuous gas-phase CO2 electroreduction to hydrocarbons (i.e. ethylene and meth...

ver descrição completa

Detalhes bibliográficos
Autores: Merino García, Iván, Albo Sánchez, Jonathan|||0000-0001-6781-5704, Irabien Gulías, Ángel|||0000-0002-2411-4163
Formato: artículo
Fecha de publicación:2018
País:España
Recursos:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/14244
Acesso em linha:http://hdl.handle.net/10902/14244
Access Level:acceso abierto
Palavra-chave:CO2 electroreduction
Cu nanoparticles
Hydrocarbons
Reaction selectivity
Ethylene
id ES_714878d2a8b0b16c4f6da468bd514cfd
oai_identifier_str oai:repositorio.unican.es:10902/14244
network_acronym_str ES
network_name_str España
repository_id_str
spelling Tailoring gas-phase CO2 electroreduction selectivity to hydrocarbons at Cu nanoparticlesMerino García, IvánAlbo Sánchez, Jonathan|||0000-0001-6781-5704Irabien Gulías, Ángel|||0000-0002-2411-4163CO2 electroreductionCu nanoparticlesHydrocarbonsReaction selectivityEthyleneCopper-based surfaces appear as the most active catalysts for CO2 electroreduction to hydrocarbons, even though formation rates and efficiencies still need to be improved. The aim of the present work is to evaluate the continuous gas-phase CO2 electroreduction to hydrocarbons (i.e. ethylene and methane) at copper nanoparticulated-based surfaces, paying attention to particle size influence (ranging from 25–80 nm) on reaction productivity, selectivity, and Faraday efficiency (FE) for CO2conversion. The effect of the current density and the presence of a microporous layer within the working electrode are then evaluated. Copper-based gas diffusion electrodes are prepared by airbrushing the catalytic ink onto carbon supports, which are then coupled to a cation exchange membrane (Nafion) in a membrane electrode assembly. The results show that the use of smaller copper nanoparticles (25 nm) leads to a higher ethylene production (1148 μmol m−2 s−1) with a remarkable high FE (92.8%), at the same time, diminishing the competitive hydrogen evolution reaction in terms of FE. This work demonstrates the importance of nanoparticle size on reaction selectivity, which may be of help to design enhanced electrocatalytic materials for CO2 valorization to hydrocarbons.The authors gratefully acknowledge the financial support from the Spanish Ministry of Economy and Competitiveness (MINECO) through the projects CTQ2013-48280-C3-1-R and CTQ2016-76231-C2-1-R. Ivan Merino-Garcia and Jonathan Albo would also like to thank the MINECO for the Early Stage Researcher Contract (BES-2014-070081) and Ramón y Cajal programme (RYC-2015-17080), respectively.IOP PublishingUniversidad de Cantabria20182018-01-05journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttp://hdl.handle.net/10902/14244Nanotechnology, 2018, 29(1), 014001reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/142442026-06-02T12:39:31Z
dc.title.none.fl_str_mv Tailoring gas-phase CO2 electroreduction selectivity to hydrocarbons at Cu nanoparticles
title Tailoring gas-phase CO2 electroreduction selectivity to hydrocarbons at Cu nanoparticles
spellingShingle Tailoring gas-phase CO2 electroreduction selectivity to hydrocarbons at Cu nanoparticles
Merino García, Iván
CO2 electroreduction
Cu nanoparticles
Hydrocarbons
Reaction selectivity
Ethylene
title_short Tailoring gas-phase CO2 electroreduction selectivity to hydrocarbons at Cu nanoparticles
title_full Tailoring gas-phase CO2 electroreduction selectivity to hydrocarbons at Cu nanoparticles
title_fullStr Tailoring gas-phase CO2 electroreduction selectivity to hydrocarbons at Cu nanoparticles
title_full_unstemmed Tailoring gas-phase CO2 electroreduction selectivity to hydrocarbons at Cu nanoparticles
title_sort Tailoring gas-phase CO2 electroreduction selectivity to hydrocarbons at Cu nanoparticles
dc.creator.none.fl_str_mv Merino García, Iván
Albo Sánchez, Jonathan|||0000-0001-6781-5704
Irabien Gulías, Ángel|||0000-0002-2411-4163
author Merino García, Iván
author_facet Merino García, Iván
Albo Sánchez, Jonathan|||0000-0001-6781-5704
Irabien Gulías, Ángel|||0000-0002-2411-4163
author_role author
author2 Albo Sánchez, Jonathan|||0000-0001-6781-5704
Irabien Gulías, Ángel|||0000-0002-2411-4163
author2_role author
author
dc.contributor.none.fl_str_mv Universidad de Cantabria
dc.subject.none.fl_str_mv CO2 electroreduction
Cu nanoparticles
Hydrocarbons
Reaction selectivity
Ethylene
topic CO2 electroreduction
Cu nanoparticles
Hydrocarbons
Reaction selectivity
Ethylene
description Copper-based surfaces appear as the most active catalysts for CO2 electroreduction to hydrocarbons, even though formation rates and efficiencies still need to be improved. The aim of the present work is to evaluate the continuous gas-phase CO2 electroreduction to hydrocarbons (i.e. ethylene and methane) at copper nanoparticulated-based surfaces, paying attention to particle size influence (ranging from 25–80 nm) on reaction productivity, selectivity, and Faraday efficiency (FE) for CO2conversion. The effect of the current density and the presence of a microporous layer within the working electrode are then evaluated. Copper-based gas diffusion electrodes are prepared by airbrushing the catalytic ink onto carbon supports, which are then coupled to a cation exchange membrane (Nafion) in a membrane electrode assembly. The results show that the use of smaller copper nanoparticles (25 nm) leads to a higher ethylene production (1148 μmol m−2 s−1) with a remarkable high FE (92.8%), at the same time, diminishing the competitive hydrogen evolution reaction in terms of FE. This work demonstrates the importance of nanoparticle size on reaction selectivity, which may be of help to design enhanced electrocatalytic materials for CO2 valorization to hydrocarbons.
publishDate 2018
dc.date.none.fl_str_mv 2018
2018-01-05
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/10902/14244
url http://hdl.handle.net/10902/14244
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.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv Nanotechnology, 2018, 29(1), 014001
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
_version_ 1869410641478942720
score 15.301629

Registos relacionados