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dc.contributor.authorCastro González, Sergio
dc.contributor.authorAlbo Sánchez, Jonathan 
dc.contributor.authorIrabien Gulías, José Ángel 
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.date.accessioned2020-06-08T10:06:00Z
dc.date.issued2020-07
dc.identifier.issn0268-2575
dc.identifier.issn1097-4660
dc.identifier.otherCTQ2016-76231-C2-1-Res_ES
dc.identifier.urihttp://hdl.handle.net/10902/18638
dc.description.abstractBACKGROUND The recycling of CO2 by photo-electrochemical reduction has attracted wide interest due to its potential benefits when compared to electro-, and photo-catalysis approaches. Among the different available semiconductors, TiO2 is the most employed material in photo-electrochemical cells. Besides, Cu is a well-known electrocatalyst for alcohols production from CO2 reduction. RESULTS In this study, a photo-electrochemical cell consisting on a TiO2 photoanode Membrane Electrode Assembly (MEA) and a Cu plate are employed to reduce CO2 to methanol and ethanol continuously under UV illumination (100 mW·cm-2). A maximum increment of 4.3 mA·cm-2 in current between the illuminated and dark conditions is achieved at -2 V vs. Ag/AgCl. The continuous photo-electrochemical reduction process in the filter-press cell is evaluated in terms of reaction rate (r), as well as Faradaic (FE) and energy (EE) efficiencies. At -1.8 V vs. Ag/AgCl, a maximum reaction rate of r=-9.5 -mol·m-2·s-1, FE=-16.2 % and EE=-5.2 % for methanol, and r=-6.8 -mol·m-2·s-1, FE=-23.2 % and EE=-6.8 % for ethanol can be achieved. CONCLUSIONS The potential benefits of the photoanode-driven system, in terms of yields and efficiencies, are observed when employing a TiO2-based MEA photoanode and Cu as dark cathode. The results demonstrate first the effect of UV illumination on current density, and then the formation of alcohols from the continuous photoreduction of CO2. Increasing the external applied voltage led to an enhanced production of methanol, but decreases ethanol formation. The system outperforms previous photoanode-based systems for the CO2-to-alcohols reactions.es_ES
dc.description.sponsorshipThe authors gratefully acknowledge the financial support from the Spanish Ministry of Economy and Competitiveness (MINECO) through the projects CTQ2016-76231-C2-1-R and Ramón y Cajal programme (RYC-2015-17080).es_ES
dc.format.extent24 p.es_ES
dc.language.isoenges_ES
dc.publisherWiley-Blackwelles_ES
dc.rights© Society of Chemical Industry. Published by Wiley. This is the peer reviewed version of the following article: Castro, S., Albo, J., & Irabien, A. (2020), Continuous conversion of CO2 to alcohols in a TiO2 photoanode-driven photoelectrochemical system. Journal of Chemical Technology & Biotechnology, 95(7), 1876-1882, which has been published in final form at https://doi.org/10.1002/jctb.6315. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.es_ES
dc.sourceJournal of Chemical Technology and Biotechnology, 2020, 95(7), 1876-1882es_ES
dc.subject.otherPhotoelectrocatalysises_ES
dc.subject.otherCO2 reductiones_ES
dc.subject.otherTiO2es_ES
dc.subject.otherCues_ES
dc.subject.otherMethanoles_ES
dc.subject.otherEthanoles_ES
dc.titleContinuous conversion of CO2 to alcohols in a TiO2 photoanode-driven photoelectrochemical systemes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherVersionhttps://doi.org/10.1002/jctb.6315es_ES
dc.rights.accessRightsembargoedAccesses_ES
dc.identifier.DOI10.1002/jctb.6315
dc.type.versionacceptedVersiones_ES
dc.date.embargoEndDate2021-07-31


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