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Tuning cathode porosity for electrochemical reduction of CO2 at high pressure [Resumo]

2024-05Conference object Open access
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dc.contributor.authorMessias, Sofia
dc.contributor.authorFialho, Maria T.
dc.contributor.authorPaninho, A. B.
dc.contributor.authorNunes, A. V. M.
dc.contributor.authorBranco, Luis C
dc.contributor.authorNunes, D.
dc.contributor.authorMartins, Rodrigo
dc.contributor.authorMendes, Manuel Joao
dc.contributor.authorRangel, C. M.
dc.contributor.authorMachado, Ana
dc.date.accessioned2024-10-11T13:51:11Z
dc.date.available2024-10-11T13:51:11Z
dc.date.issued2024-05
dc.description.abstractABSTRACT: The development of active and stable catalytic cathodes is critical for advancing electrochemical carbon dioxide reduction into fuels and chemicals from Lab to market. This is a technology with a high potential to contribute to combat climate changes by using captured CO2, water and renewable energy [1]. The use of pressures higher than atmospheric pressure to carry out the co-electrolysis of CO2 and water has been recognized as an important process intensification parameter to increase productivities and energy efficiency [2]. Ongoing work addresses the preparation of aerogels by the sol gel method and impregnation with zinc and copper metallic particles to be used as cathodes for the co-electrolysis of CO2 and water to produce syngas at temperatures near room temperature and high-pressure. Ionic liquid-based electrolytes are used to increase CO2 concentration at the surface of the electrode and consequently productivities, as some ionic liquid families are known to solubilize high amounts of CO2. Aerogels have been investigated for many different applications including as catalyst supports, due to their high surface area, stability in gaseous or liquid phases, and efficient transport through large meso and macropores. The present work reports a strategy to tune the pore sizes of the catalytic electrodes by the use of reticulating agents and supercritical CO2 drying. Productivities and faradaic efficiencies of the porous materials with the different reticulating agents are compared and interpreted in respect to their surface characterization e.g. BET surface areas and morphologies determined by SEM. The potential of new aerogel-based catalytic cathodes on the efficiency of the electrochemical CO2 reduction will be discussed and its impact in fostering supercritical fluids technology through its use in processes for the mitigation of climate changes.pt_PT
dc.description.versionN/Apt_PT
dc.identifier.citationMessias, S., Fialho, M.T., Paninho, A.B., Nunes, A.V.M., Branco, L.C., Nunes, D., Martins, R., Mendes, M.J., Rangel, C.M. & Machado, A. (2024) Tuning cathode porosity for electrochemical reduction of CO2 at high pressure. In: EMSF2024 - 20th European Meeting on Supercritical Fluids, Maribor, Slovenia, 26-29 May, 2024pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.9/4370
dc.language.isoengpt_PT
dc.peerreviewednopt_PT
dc.relationSunlight driven carbon-dioxide reduction: Hybrid catalytic systems consisting of molecular catalysts and light-harvesting Quantum-dots and semiconductors
dc.relationAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
dc.relationSustainable Strategies for Solar Electrochemical Reduction of Carbon Dioxide to Fuels
dc.relationAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
dc.relationInstitute of Nanostructures, Nanomodelling and Nanofabrication
dc.relationInstitute of Nanostructures, Nanomodelling and Nanofabrication
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectElectrochemical reductionpt_PT
dc.subjectCarbon dioxidept_PT
dc.subjectHigh pressurept_PT
dc.titleTuning cathode porosity for electrochemical reduction of CO2 at high pressure [Resumo]pt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleSunlight driven carbon-dioxide reduction: Hybrid catalytic systems consisting of molecular catalysts and light-harvesting Quantum-dots and semiconductors
oaire.awardTitleAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
oaire.awardTitleSustainable Strategies for Solar Electrochemical Reduction of Carbon Dioxide to Fuels
oaire.awardTitleAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
oaire.awardTitleInstitute of Nanostructures, Nanomodelling and Nanofabrication
oaire.awardTitleInstitute of Nanostructures, Nanomodelling and Nanofabrication
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/745604/EU
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50006%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F147219%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50006%2F2020/PT
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oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50025%2F2020/PT
oaire.citation.conferencePlaceMaribor, Sloveniapt_PT
oaire.citation.titleEMSF2024 - 20th European Meeting on Supercritical Fluidspt_PT
oaire.fundingStreamH2020
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamOE
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameBranco
person.familyNameNunes
person.familyNameMartins
person.familyNameMendes
person.familyNameRangel
person.familyNameMachado
person.givenNameLuis
person.givenNameDaniela
person.givenNameRodrigo
person.givenNameManuel Joao
person.givenNameCarmen M.
person.givenNameAna
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person.identifier.orcid0000-0002-7432-8725
person.identifier.ridC-6426-2013
person.identifier.ridI-2734-2013
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person.identifier.ridK-7215-2015
person.identifier.ridD-5477-2011
person.identifier.scopus-author-id7006900650
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person.identifier.scopus-author-id7202166114
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project.funder.identifierhttp://doi.org/10.13039/501100008530
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project.funder.nameEuropean Commission
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
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