Mixed Ionic-Electronic Conduction in NiFe2O4-Ce0.8Gd0.2O2-delta Nanocomposite Thin Films for Oxygen Separation
[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 th...
| Autores: | , , , , , , |
|---|---|
| Formato: | artículo |
| Fecha de publicación: | 2018 |
| País: | España |
| Recursos: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/121857 |
| Acesso em linha: | https://riunet.upv.es/handle/10251/121857 |
| Access Level: | acceso abierto |
| Palavra-chave: | Ceria Membranes Nanocomposite Oxygen separation Sputtering INGENIERIA QUIMICA |
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Mixed Ionic-Electronic Conduction in NiFe2O4-Ce0.8Gd0.2O2-delta Nanocomposite Thin Films for Oxygen SeparationSolis Díaz, CeciliaToldrá-Reig, FidelSomacescu, SimonaGarcía-Fayos, JulioPalafox, ElenaBalaguer Ramirez, Maria|||0000-0002-7098-9235Serra Alfaro, José Manuel|||0000-0002-1515-1106CeriaMembranesNanocompositeOxygen separationSputteringINGENIERIA QUIMICA[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.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.John Wiley & SonsInstituto Universitario Mixto de Tecnología QuímicaEuropean CommissionMinisterio de Economía y CompetitividadRepositorio Institucional de la Universitat Politècnica de València Riunet20182018-01-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://riunet.upv.es/handle/10251/121857reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 ENE2014-57651-R ALMACENAMIENTO DE ENERGIA VIA REDUCCION DE CO2 A COMBUSTIBLES Y PRODUCTOS QUIMICOSEuropean Commission https://doi.org/10.13039/501100000780 FP7 608524 Graded Membranes for Energy Efficient New Generation Carbon Capture ProcessMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 SEV-2016-0683open accesshttp://purl.org/coar/access_right/c_abf2Reserva de todos los derechoshttp://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/1218572026-06-13T07:49:27Z |
| dc.title.none.fl_str_mv |
Mixed Ionic-Electronic Conduction in NiFe2O4-Ce0.8Gd0.2O2-delta Nanocomposite Thin Films for Oxygen Separation |
| title |
Mixed Ionic-Electronic Conduction in NiFe2O4-Ce0.8Gd0.2O2-delta Nanocomposite Thin Films for Oxygen Separation |
| spellingShingle |
Mixed Ionic-Electronic Conduction in NiFe2O4-Ce0.8Gd0.2O2-delta Nanocomposite Thin Films for Oxygen Separation Solis Díaz, Cecilia Ceria Membranes Nanocomposite Oxygen separation Sputtering INGENIERIA QUIMICA |
| title_short |
Mixed Ionic-Electronic Conduction in NiFe2O4-Ce0.8Gd0.2O2-delta Nanocomposite Thin Films for Oxygen Separation |
| title_full |
Mixed Ionic-Electronic Conduction in NiFe2O4-Ce0.8Gd0.2O2-delta Nanocomposite Thin Films for Oxygen Separation |
| title_fullStr |
Mixed Ionic-Electronic Conduction in NiFe2O4-Ce0.8Gd0.2O2-delta Nanocomposite Thin Films for Oxygen Separation |
| title_full_unstemmed |
Mixed Ionic-Electronic Conduction in NiFe2O4-Ce0.8Gd0.2O2-delta Nanocomposite Thin Films for Oxygen Separation |
| title_sort |
Mixed Ionic-Electronic Conduction in NiFe2O4-Ce0.8Gd0.2O2-delta Nanocomposite Thin Films for Oxygen Separation |
| dc.creator.none.fl_str_mv |
Solis Díaz, Cecilia Toldrá-Reig, Fidel Somacescu, Simona García-Fayos, Julio Palafox, Elena Balaguer Ramirez, Maria|||0000-0002-7098-9235 Serra Alfaro, José Manuel|||0000-0002-1515-1106 |
| author |
Solis Díaz, Cecilia |
| author_facet |
Solis Díaz, Cecilia Toldrá-Reig, Fidel Somacescu, Simona García-Fayos, Julio Palafox, Elena Balaguer Ramirez, Maria|||0000-0002-7098-9235 Serra Alfaro, José Manuel|||0000-0002-1515-1106 |
| author_role |
author |
| author2 |
Toldrá-Reig, Fidel Somacescu, Simona García-Fayos, Julio Palafox, Elena Balaguer Ramirez, Maria|||0000-0002-7098-9235 Serra Alfaro, José Manuel|||0000-0002-1515-1106 |
| author2_role |
author author author author author author |
| dc.contributor.none.fl_str_mv |
Instituto Universitario Mixto de Tecnología Química European Commission Ministerio de Economía y Competitividad Repositorio Institucional de la Universitat Politècnica de València Riunet |
| dc.subject.none.fl_str_mv |
Ceria Membranes Nanocomposite Oxygen separation Sputtering INGENIERIA QUIMICA |
| topic |
Ceria Membranes Nanocomposite Oxygen separation Sputtering INGENIERIA QUIMICA |
| description |
[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. |
| publishDate |
2018 |
| dc.date.none.fl_str_mv |
2018 2018-01-01 |
| dc.type.none.fl_str_mv |
journal article http://purl.org/coar/resource_type/c_6501 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://riunet.upv.es/handle/10251/121857 |
| url |
https://riunet.upv.es/handle/10251/121857 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.relation.none.fl_str_mv |
Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 ENE2014-57651-R ALMACENAMIENTO DE ENERGIA VIA REDUCCION DE CO2 A COMBUSTIBLES Y PRODUCTOS QUIMICOS European Commission https://doi.org/10.13039/501100000780 FP7 608524 Graded Membranes for Energy Efficient New Generation Carbon Capture Process Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 SEV-2016-0683 |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Reserva de todos los derechos http://rightsstatements.org/vocab/InC/1.0/ |
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info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 Reserva de todos los derechos http://rightsstatements.org/vocab/InC/1.0/ |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf application/pdf |
| dc.publisher.none.fl_str_mv |
John Wiley & Sons |
| publisher.none.fl_str_mv |
John Wiley & Sons |
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reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname:Universitat Politècnica de València (UPV) |
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