Mostrar el registro sencillo del ítem
Heterogeneous Water Oxidation: Surface Activity versus Amorphization Activation in Cobalt Phosphate Catalysts
dc.creator | González Flores, Diego | |
dc.creator | Sánchez Villalobos, Irene | |
dc.creator | Zaharieva, Ivelina | |
dc.creator | Klingan, Katharina | |
dc.creator | Heidkamp, Jonathan | |
dc.creator | Chernev, Petko | |
dc.creator | Menezes, Prashanth W. | |
dc.creator | Driess, Matthias | |
dc.creator | Dau, Holger | |
dc.creator | Montero Villalobos, Mavis Lili | |
dc.date.accessioned | 2020-03-09T16:08:32Z | |
dc.date.available | 2020-03-09T16:08:32Z | |
dc.date.issued | 2015 | |
dc.identifier.citation | https://onlinelibrary.wiley.com/doi/full/10.1002/ange.201409333 | |
dc.identifier.issn | 1521-3757 | |
dc.identifier.uri | https://hdl.handle.net/10669/80697 | |
dc.description.abstract | Is 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.sponsorship | Deutsche Forschungsgemeinschaft/[DA 402/7‐1]/DFG/Alemania | es_ES |
dc.language.iso | en_US | es_ES |
dc.source | Angewandte Chemie, vol.127(8), pp.2502-2506 | es_ES |
dc.subject | Amorphization | es_ES |
dc.subject | Cobalt oxide | es_ES |
dc.subject | Cobalt phosphate | es_ES |
dc.subject | Electrocatalysis | es_ES |
dc.subject | Water oxidation | es_ES |
dc.title | Heterogeneous Water Oxidation: Surface Activity versus Amorphization Activation in Cobalt Phosphate Catalysts | es_ES |
dc.type | artículo original | |
dc.identifier.doi | 10.1002/ange.201409333 | |
dc.description.procedence | UCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigación en Electroquímica y Energía Química (CELEQ) | es_ES |
dc.description.procedence | UCR::Vicerrectoría de Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela de Química | es_ES |
Ficheros en el ítem
Este ítem aparece en la(s) siguiente(s) colección(ones)
-
Química [360]