Reduced Graphene Oxide Overlayer on Copper Nanocube Electrodes Steers the Selectivity Towards Ethanol in Electrochemical Reduction of Carbon Dioxide

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dc.contributor.authorMardones-Herrera, Elias
dc.contributor.authorCastro-Castillo, Carmen
dc.contributor.authorNanda, Kamala Kanta
dc.contributor.authorVeloso, Nicolas
dc.contributor.authorLeyton, Felipe
dc.contributor.authorMartinez, Francisco
dc.contributor.authorSaez-Pizarro, Natalia
dc.contributor.authorRuiz-Leon, Domingo
dc.contributor.authorJesus Aguirre, Maria
dc.contributor.authorArmijo, Francisco
dc.contributor.authorIsaacs, Mauricio
dc.date.accessioned2025-01-20T21:07:05Z
dc.date.available2025-01-20T21:07:05Z
dc.date.issued2022
dc.description.abstractDeveloping copper-based electrocatalysts that favor high-value multi-carbon oxygenates is desired, given their use as platform chemicals and as a direct fuel for transportation. Combining a CO-selective catalyst with copper shifts the selectivity of CO2 electroreduction toward C-2 products. Herein, we developed a reduced graphene oxide (rGO)-modified copper nanocube electrocatalyst that could shift the selectivity of CO2 electroreduction towards ethanol (Faradaic efficiency 76. 84 % at -0.9 V vs. reversible hydrogen electrode (RHE)). Spectroelectrochemical Raman analysis reveals a higher population of *C2HxOy intermediates at -0.9 V vs. RHE on the rGO-modified copper nanocube electrocatalyst surface, which coincides with the highest faradaic efficiency of ethanol upon CO2 electroreduction at the same potential. Our results demonstrate that the rGO modification can enhance ethanol selectivity through a probable tandem electrocatalysis mechanism and provide insights into controlling electrocatalytic activity and product selectivity in the CO2 electroreduction reaction.
dc.fuente.origenWOS
dc.identifier.doi10.1002/celc.202200259
dc.identifier.issn2196-0216
dc.identifier.urihttps://doi.org/10.1002/celc.202200259
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93391
dc.identifier.wosidWOS:000800859400001
dc.issue.numero10
dc.language.isoen
dc.revistaChemelectrochem
dc.rightsacceso restringido
dc.subjectCopper nanocubes
dc.subjectElectrocatalytic CO2 reduction
dc.subjectReduced graphene oxide
dc.subjectSpectroelectrochemical Raman
dc.subjectTandem electrocatalysis
dc.subject.ods13 Climate Action
dc.subject.ods07 Affordable and Clean Energy
dc.subject.odspa13 Acción por el clima
dc.subject.odspa07 Energía asequible y no contaminante
dc.titleReduced Graphene Oxide Overlayer on Copper Nanocube Electrodes Steers the Selectivity Towards Ethanol in Electrochemical Reduction of Carbon Dioxide
dc.typeartículo
dc.volumen9
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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