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Study of the annealing conditions and photoelectrochemical characterization of a new iron oxide bi-layered nanostructure for water splitting

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Study of the annealing conditions and photoelectrochemical characterization of a new iron oxide bi-layered nanostructure for water splitting

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dc.contributor.author Lucas-Granados, Bianca es_ES
dc.contributor.author Sánchez Tovar, Rita es_ES
dc.contributor.author Fernández Domene, Ramón Manuel es_ES
dc.contributor.author Garcia-Anton, Jose es_ES
dc.date.accessioned 2017-05-25T12:04:16Z
dc.date.available 2017-05-25T12:04:16Z
dc.date.issued 2016-08
dc.identifier.issn 0927-0248
dc.identifier.uri http://hdl.handle.net/10251/81748
dc.description.abstract Iron oxide nanostructures have emerged as promising materials for being used as photocatalysts for hydrogen production due to their advantageous properties. However, their low carrier mobility and short hole diffusion length limit their efficiency in water splitting. To overcome these drawbacks, in the present study, we synthetized a new hematite (alpha-Fe2O3) bi-layered nanostructure consisting of a top nanosphere layer and a nanotubular underneath one by electrochemical anodization. Annealing parameters such as temperature, heating rate and atmosphere were studied in detail in order to determine the optimum annealing conditions for the synthetized nanostructure. The obtained new bi-layered nanostructure was characterized by Field Emission Scanning Electron Microscopy, Raman Spectroscopy, Mott-Schottky analysis and Electrochemical Impedance Spectroscopy. The results show the best water splitting performance for the bi-layered nanostructure annealed in argon atmosphere at 500 degrees C at a heating rate of 15 degrees C min(-1) achieving a photocurrent density of similar to 0.143 mA cm(-2) at 1.54 V (vs. RHE). The results indicate that the bi-layered nanostructure is an efficient photocatalyst for applications such as water splitting es_ES
dc.description.sponsorship The authors would like to express their gratitude for the financial support to the Ministerio de Economia y Competitividad (Reference: BES-2014-068713, Project Code: CTQ2013-42494-R), for its help in the Laser Raman Microscope acquisition (UPOV08-3E-012) and for the co-finance by the European Social Fund. en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Solar Energy Materials and Solar Cells es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Hematite es_ES
dc.subject Photocatalyst es_ES
dc.subject Anodization es_ES
dc.subject Water splitting es_ES
dc.subject Annealing es_ES
dc.subject.classification INGENIERIA QUIMICA es_ES
dc.title Study of the annealing conditions and photoelectrochemical characterization of a new iron oxide bi-layered nanostructure for water splitting es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.solmat.2016.04.005
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//CTQ2013-42494-R/ES/DESARROLLO DE FOTOANODOS CON NUEVAS NANOESTRUCTURAS DE OXIDOS METALICOS PARA LA PRODUCCION DE ENERGIA Y DESTRUCCION DE CONTAMINANTES CON LUZ SOLAR/ / es_ES
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//BES-2014-068713/ES/BES-2014-068713/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros Industriales - Escola Tècnica Superior d'Enginyers Industrials es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Seguridad Industrial, Radiofísica y Medioambiental - Institut de Seguretat Industrial, Radiofísica i Mediambiental es_ES
dc.description.bibliographicCitation Lucas-Granados, B.; Sánchez Tovar, R.; Fernández Domene, RM.; Garcia-Anton, J. (2016). Study of the annealing conditions and photoelectrochemical characterization of a new iron oxide bi-layered nanostructure for water splitting. Solar Energy Materials and Solar Cells. 153:68-77. doi:10.1016/j.solmat.2016.04.005 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://doi.org/10.1016/j.solmat.2016.04.005 es_ES
dc.description.upvformatpinicio 68 es_ES
dc.description.upvformatpfin 77 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 153 es_ES
dc.relation.senia 313205 es_ES
dc.identifier.eissn 1879-3398
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
dc.contributor.funder European Social Fund es_ES


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