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Electrocatalytic Oxidation of Cyanide on Copper-doped Cobalt Oxide Electrodes

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Electrocatalytic Oxidation of Cyanide on Copper-doped Cobalt Oxide Electrodes

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dc.contributor.author Berenguer, R. es_ES
dc.contributor.author La Rosa-Toro, A. es_ES
dc.contributor.author Quijada, C. es_ES
dc.contributor.author Morallon, E. es_ES
dc.date.accessioned 2020-04-01T07:15:54Z
dc.date.available 2020-04-01T07:15:54Z
dc.date.issued 2017 es_ES
dc.identifier.issn 0926-3373 es_ES
dc.identifier.uri http://hdl.handle.net/10251/139936
dc.description.abstract [EN] Copper and copper oxides are well-known excellent catalysts in several chemical processes, but their low mechanical and electrochemical stability restrict their direct utilization as electrodes in electrolytic processes. In this work, the incorporation of copper into cobalt oxide (CuxCo3-xO4) is presented as an excellent approach to obtain highly active and robust copper-based electrocatalysts. Particularly, the electrocatalytic performance of Ti-supported CuxCo3-xO4 electrodes (with 0 <= x <= 1.5) has been studied for the oxidation' of cyanide in alkaline media. Cyclic voltammetry and electrolysis runs show an outstanding effect of Cu on the activity, efficiency and kinetics of spinel CuxCo3-xO4 electrodes for CN(-)electro-oxidation. Despite being active oxides with high activity towards water oxidation, copper saturated (x=1.0) and oversaturated (x=1.5) spinels exhibit unprecedented 100% current efficiencies for the electro-oxidation of CN- in aqueous electrolyte. In situ surface enhanced Raman spectroscopy (SERS) reveals the specific adsorption of CN- ions on surface Cu species to be involved in the electrocatalytic oxidation mechanism. This electrocatalytic activity has been attributed to surface Cu(II) in the spinel lattice. Furthermore, the CuxCo3-xO4 electrodes also display high electrochemical stability. Therefore, they are considered excellent candidates for the sustainable electrochemical elimination of highly toxic cyanides. es_ES
dc.description.sponsorship Financial support from the Spanish Ministerio de Economia y Competitividad and FEDER funds (MAT2016-76595-R, IJCI-2014-20012) and from the Generalitat Valenciana (PROMETEO2013/038) is gratefully acknowledged. es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Applied Catalysis B Environmental es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Electrocatalysts es_ES
dc.subject Cyanide oxidation es_ES
dc.subject Cobalt oxide electrodes es_ES
dc.subject In situ Raman es_ES
dc.subject.classification QUIMICA FISICA es_ES
dc.title Electrocatalytic Oxidation of Cyanide on Copper-doped Cobalt Oxide Electrodes es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.apcatb.2017.01.078 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/GVA//PROMETEO%2F2013%2F038/ES/Desarrollo de nuevos electrodos y procesos químicos sostenibles para la detección de analitos obtenidos por microextracción líquido-líquido/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//MAT2016-76595-R/ES/NUEVAS ESTRATEGIAS DE FUNCIONALIZACION ELECTROQUIMICA DE MATERIALES CARBONOSOS NANOESTRUCTURADOS PARA LA REDUCCION DE OXIGENO Y BIOSENSORES/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//IJCI-2014-20013/ES/IJCI-2014-20013/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ingeniería Textil y Papelera - Departament d'Enginyeria Tèxtil i Paperera es_ES
dc.description.bibliographicCitation Berenguer, R.; La Rosa-Toro, A.; Quijada, C.; Morallon, E. (2017). Electrocatalytic Oxidation of Cyanide on Copper-doped Cobalt Oxide Electrodes. Applied Catalysis B Environmental. 207:286-296. https://doi.org/10.1016/j.apcatb.2017.01.078 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.apcatb.2017.01.078 es_ES
dc.description.upvformatpinicio 286 es_ES
dc.description.upvformatpfin 296 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 207 es_ES
dc.relation.pasarela S\327662 es_ES
dc.contributor.funder Generalitat Valenciana es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
dc.contributor.funder European Regional Development Fund es_ES


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