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Water-mediated photo-induced reduction of platinum films
dc.contributor.author | Fraxedas Calduch, Jordi |
dc.contributor.author | Zhang, Kuan |
dc.contributor.author | Sepulveda, Borja |
dc.contributor.author | Esplandiu, María José |
dc.contributor.author | García de Andrés, Xènia |
dc.contributor.author | Llorca Piqué, Jordi |
dc.contributor.author | Pérez Dieste, Virginia |
dc.contributor.author | Escudero, Carlos |
dc.contributor.other | Universitat Politècnica de Catalunya. Doctorat en Enginyeria de Processos Químics |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Química |
dc.date.accessioned | 2019-12-04T13:06:16Z |
dc.date.issued | 2019-06-11 |
dc.identifier.citation | Fraxedas Calduch, J. [et al.]. Water-mediated photo-induced reduction of platinum films. "Journal of synchrotron radiation", 11 Juny 2019, vol. 26, núm. 4, p. 1288-1293. |
dc.identifier.issn | 0909-0495 |
dc.identifier.uri | http://hdl.handle.net/2117/173533 |
dc.description.abstract | Platinum thin films activated ex situ by oxygen plasma become reduced by the combined effect of an intense soft X-ray photon beam and condensed water. The evolution of the electronic structure of the surface has been characterized by near-ambient-pressure photoemission and mimics the inverse two-step sequence observed in the electro-oxidation of platinum, i.e. the surface-oxidized platinum species are reduced first and then the adsorbed species desorb in a second step leading to a surface dominated by metallic platinum. The comparison with measurements performed under high-vacuum conditions suggests that the reduction process is mainly induced by the reactive species generated by the radiolysis of water. When the photon flux is decreased, then the reduction process becomes slower. |
dc.format.extent | 6 p. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria química::Química física |
dc.subject | Àrees temàtiques de la UPC::Enginyeria química::Química física::Electroquímica |
dc.subject.lcsh | Electrochemistry |
dc.subject.lcsh | Electrolytic oxidation |
dc.subject.lcsh | Photoemission |
dc.subject.lcsh | Platinum compounds |
dc.subject.other | Beam damage |
dc.subject.other | Water |
dc.subject.other | Near-ambient-pressure photoemission |
dc.subject.other | Platinum oxides |
dc.title | Water-mediated photo-induced reduction of platinum films |
dc.type | Article |
dc.subject.lemac | Electroquímica |
dc.subject.lemac | Oxidació electrolítica |
dc.subject.lemac | Fotoemissió |
dc.subject.lemac | Platí--Compostos |
dc.contributor.group | Universitat Politècnica de Catalunya. NEMEN - Nanoenginyeria de materials aplicats a l'energia |
dc.identifier.doi | 10.1107/S1600577519004685 |
dc.relation.publisherversion | https://onlinelibrary.wiley.com/doi/abs/10.1107/S1600577519004685 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 25370545 |
dc.description.version | Postprint (author's final draft) |
dc.date.lift | 10000-01-01 |
local.citation.author | Fraxedas Calduch, Jordi; Zhang, K.; Sepulveda, Borja; Esplandiu, M.; García, X.; Llorca, J.; Pérez-Dieste, V.; Escudero, C. |
local.citation.publicationName | Journal of synchrotron radiation |
local.citation.volume | 26 |
local.citation.number | 4 |
local.citation.startingPage | 1288 |
local.citation.endingPage | 1293 |
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