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Mixed Ionic-Electronic Conduction in NiFe2O4-Ce0.8Gd0.2O2-delta Nanocomposite Thin Films for Oxygen Separation

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Mixed Ionic-Electronic Conduction in NiFe2O4-Ce0.8Gd0.2O2-delta Nanocomposite Thin Films for Oxygen Separation

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dc.contributor.author Solis Díaz, Cecilia es_ES
dc.contributor.author Toldrá-Reig, Fidel es_ES
dc.contributor.author Balaguer Ramirez, Maria es_ES
dc.contributor.author Somacescu, Simona es_ES
dc.contributor.author García-Fayos, Julio es_ES
dc.contributor.author Palafox, Elena es_ES
dc.contributor.author Serra Alfaro, José Manuel es_ES
dc.date.accessioned 2019-06-09T20:25:32Z
dc.date.available 2019-06-09T20:25:32Z
dc.date.issued 2018 es_ES
dc.identifier.issn 1864-5631 es_ES
dc.identifier.uri http://hdl.handle.net/10251/121857
dc.description This is the peer reviewed version of the following article: Solis Díaz, Cecilia, Toldrá-Reig, Fidel, Balaguer Ramirez, Maria, Somacescu, Simona, García-Fayos, Julio, Palafox, Elena , Serra Alfaro, José Manuel. (2018). Mixed Ionic-Electronic Conduction in NiFe2O4-Ce0.8Gd0.2O2-delta Nanocomposite Thin Films for Oxygen Separation.ChemSusChem, 11, 16, 2818-2827. DOI: 10.1002/cssc.201800420, which has been published in final form at http://doi.org/10.1002/cssc.201800420. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
dc.description.abstract [EN] NiFe2O4-Ce0.8Gd0.2O2-delta (NFO/CGO) nanocomposite thin films were prepared by simultaneously radio-frequency (RF) magnetron sputtering of both NFO and CGO targets. The aim is the growth of a CO2-stable composite layer that combines the electronic and ionic conduction of the separate NFO and the CGO phases for oxygen separation. The effect of the deposition temperature on the microstructure of the film was studied to obtain high-quality composite thin films. The ratio of both phases was changed by applying different power to each ceramic target. The amount of each deposited phase as well as the different oxidation states of the nanocomposite constituents were analyzed by means of X-ray photoelectron spectroscopy (XPS). The transport properties were studied by conductivity measurements as a function of temperature and pO(2). These analyses enabled (1)selection of the best deposition temperature (400 degrees C), (2)correlation of the p-type electronic behavior of the NFO phase with the hole hopping between Ni3+-Ni2+, and (3)following the conductivity behavior of the grown composite layer (prevailing ionic or electronic character) attained by varying the amount of each phase. The sputtered layer exhibited high ambipolar conduction and surface-exchange activity. A 150 nm-thick nanograined thin film was deposited on a 20 mu m-thick Ba0.5Sr0.5Co0.8Fe0.2O3-delta asymmetric membrane, resulting in up to 3.8 mLmin(-1)cm(-2) O-2 permeation at 1000 degrees C under CO2 atmosphere. es_ES
dc.description.sponsorship Funding from European Union (FP7 Project Green-CC- Grant Agreement 608524), the Spanish Government (ENE2014-57651 and SEV-2016-0683) is kindly acknowledged. The authors also want to acknowledge the Electron Microscopy Service from the Universitat Politecnica de Valencia for their support in the SEM analysis performed in this work. es_ES
dc.language Inglés es_ES
dc.publisher John Wiley & Sons es_ES
dc.relation MINECO/ENE2014-57651-R es_ES
dc.relation MINECO/SEV-2016-0683 es_ES
dc.relation.ispartof ChemSusChem es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Ceria es_ES
dc.subject Membranes es_ES
dc.subject Nanocomposite es_ES
dc.subject Oxygen separation es_ES
dc.subject Sputtering es_ES
dc.subject.classification INGENIERIA QUIMICA es_ES
dc.title Mixed Ionic-Electronic Conduction in NiFe2O4-Ce0.8Gd0.2O2-delta Nanocomposite Thin Films for Oxygen Separation es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1002/cssc.201800420 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/608524/EU es_ES
dc.rights.accessRights Abierto es_ES
dc.date.embargoEndDate 2019-08-22 es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química es_ES
dc.description.bibliographicCitation Solis Díaz, C.; Toldrá-Reig, F.; Balaguer Ramirez, M.; Somacescu, S.; García-Fayos, J.; Palafox, E.; Serra Alfaro, JM. (2018). Mixed Ionic-Electronic Conduction in NiFe2O4-Ce0.8Gd0.2O2-delta Nanocomposite Thin Films for Oxygen Separation. ChemSusChem. 11(16):2818-2827. https://doi.org/10.1002/cssc.201800420 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://doi.org/10.1002/cssc.201800420 es_ES
dc.description.upvformatpinicio 2818 es_ES
dc.description.upvformatpfin 2827 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 11 es_ES
dc.description.issue 16 es_ES
dc.identifier.pmid 29989384
dc.relation.pasarela S\371383 es_ES
dc.contributor.funder European Commission es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
dc.contributor.funder Ministerio de Economía, Industria y Competitividad es_ES


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