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Microstructural evolution and optical properties of TiO2 synthesized by eggshellmembrane templating for DSSCs application

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Microstructural evolution and optical properties of TiO2 synthesized by eggshellmembrane templating for DSSCs application

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dc.contributor.author Camaratta, R. es_ES
dc.contributor.author Correia Lima, A.N. es_ES
dc.contributor.author Reyes Tolosa, María Dolores es_ES
dc.contributor.author Hernández Fenollosa, María de los Ángeles es_ES
dc.contributor.author Orozco Messana, Javier es_ES
dc.contributor.author Bergmann, C.P. es_ES
dc.date.accessioned 2015-05-21T08:55:39Z
dc.date.available 2015-05-21T08:55:39Z
dc.date.issued 2013
dc.identifier.issn 0025-5408
dc.identifier.uri http://hdl.handle.net/10251/50611
dc.description.abstract [EN] This article presents the bio-inspired synthesis of TiO2 using eggshell membranes (ESM) as a biotemplate on which the crystals of TiO2 are nucleated and grown. The microstructure, phase transformations and optical behavior were studied with the objective of understanding the effects of the thermal treatment on the properties of the TiO2 powder for application in dye sensitized solar cells (DSSC). The technique used for the mimetization of the ESM consists of submerging the biotemplate in an alcoholic solution of TiCl4 and thermal treating the samples at 600, 700 and 800 8C. Thermal analysis (DTA and TGA) was used to investigate the thermal decomposition of the membranes. X-ray diffraction (XRD) studies revealed the phase evolution and the average crystal sizes. Scanning and transition electron microscopy (SEM and TEM, respectively) were used to investigate the morphology of the obtained powders. UV¿vis diffuse reflectance was used to investigate the optical properties. The porosity was also evaluated using a BET instrument. The results indicated that the best features for DSSC application were presented by the sample that was thermally treated at 600 8C. This is reflected in the good replication of the morphology of the used biotemplate, with a nanocrystalline anatase phase (average crystal size 15.82 nm), high surface area (64.8 m2/g), mesoporous structure (average pore size of 26.31 angstrom) and large band gap (3.31 eV). es_ES
dc.description.sponsorship This work was supported by the Generalitat Valenciana project PROMETEO/2009/074. Two of the authors, R. Camaratta and A.N. Correia Lima, also wish to thank the financial support of CNPq (Brazil) and the European Union's Erasmus Mundus programme for doctorate scholarships.
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation GV/PROMETEO/2009/074 es_ES
dc.relation.ispartof Materials Research Bulletin es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Semiconductors es_ES
dc.subject Chemical synthesis es_ES
dc.subject Microstructure es_ES
dc.subject Optical properties es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title Microstructural evolution and optical properties of TiO2 synthesized by eggshellmembrane templating for DSSCs application es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.materresbull.2012.12.047
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Tecnología de Materiales - Institut de Tecnologia de Materials es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada es_ES
dc.description.bibliographicCitation Camaratta, R.; Correia Lima, A.; Reyes Tolosa, MD.; Hernández Fenollosa, MDLÁ.; Orozco Messana, J.; Bergmann, C. (2013). Microstructural evolution and optical properties of TiO2 synthesized by eggshellmembrane templating for DSSCs application. Materials Research Bulletin. 48(4):1569-1574. doi:10.1016/j.materresbull.2012.12.047 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.materresbull.2012.12.047 es_ES
dc.description.upvformatpinicio 1569 es_ES
dc.description.upvformatpfin 1574 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 48 es_ES
dc.description.issue 4 es_ES
dc.relation.senia 236117
dc.contributor.funder Generalitat Valenciana


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