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dc.creatorGonzález Flores, Diego
dc.creatorSánchez Villalobos, Irene
dc.creatorZaharieva, Ivelina
dc.creatorKlingan, Katharina
dc.creatorHeidkamp, Jonathan
dc.creatorChernev, Petko
dc.creatorMenezes, Prashanth W.
dc.creatorDriess, Matthias
dc.creatorDau, Holger
dc.creatorMontero Villalobos, Mavis Lili
dc.date.accessioned2020-03-09T16:08:32Z
dc.date.available2020-03-09T16:08:32Z
dc.date.issued2015
dc.identifier.citationhttps://onlinelibrary.wiley.com/doi/full/10.1002/ange.201409333es_ES
dc.identifier.issn1521-3757
dc.identifier.urihttps://hdl.handle.net/10669/80697
dc.description.abstractIs water oxidation catalyzed at the surface or within the bulk volume of solid oxide materials? This question is addressed for cobalt phosphate catalysts deposited on inert electrodes, namely crystallites of pakhomovskyite (Co3(PO4)2⋅8 H2O, Pak) and phosphate‐containing Co oxide (CoCat). X‐ray spectroscopy reveals that oxidizing potentials transform the crystalline Pak slowly (5–8 h) but completely into the amorphous CoCat. Electrochemical analysis supports high‐TOF surface activity in Pak, whereas its amorphization results in dominating volume activity of the thereby formed CoCat material. In the directly electrodeposited CoCat, volume catalysis prevails, but not at very low levels of the amorphous material, implying high‐TOF catalysis at surface sites. A complete picture of heterogeneous water oxidation requires insight in catalysis at the electrolyte‐exposed “outer surface”, within a hydrated, amorphous volume phase, and modes and kinetics of restructuring upon operation.es_ES
dc.description.sponsorshipDeutsche Forschungsgemeinschaft/[DA 402/7‐1]/DFG/Alemaniaes_ES
dc.language.isoen_USes_ES
dc.sourceAngewandte Chemie, vol.127(8), pp.2502-2506es_ES
dc.subjectAmorphizationes_ES
dc.subjectCobalt oxidees_ES
dc.subjectCobalt phosphatees_ES
dc.subjectElectrocatalysises_ES
dc.subjectWater oxidationes_ES
dc.titleHeterogeneous Water Oxidation: Surface Activity versus Amorphization Activation in Cobalt Phosphate Catalystses_ES
dc.typeartículo científicoes_ES
dc.identifier.doi10.1002/ange.201409333
dc.description.procedenceUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigación en Electroquímica y Energía Química (CELEQ)es_ES
dc.description.procedenceUCR::Vicerrectoría de Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela de Químicaes_ES


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