Photoelectrochemical characterization of ITO/TiO2 electrodes obtained by cathodic electrodeposition from aqueous solution
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s10008-015-2848-1 http://hdl.handle.net/11449/164690 |
Resumo: | In the present work, the photoelectrochemical characterization of ITO/TiO2 electrodes electrosynthesized at two distinct TiO2 film charges (0.35 and 1.00 C) was performed. Scanning electron microscopy presented a globular-like nanostructure and a typical morphology that are dependent on the growing charge, where the photoelectrode synthesized at 0.35 C presented a more homogeneous morphology. Such dependence was also observed at the photoelectrochemical response, once the photoactivity for the photoelectrode synthesized at 0.35 C was better than the photoelectrode synthesized at 1.00 C, which was explained by the surface recombination process and the electron lifetime. In order to explore the charge-transfer process and the displacement of the quasi-Fermi level upon illumination, electrochemical impedance spectroscopy (EIS) was performed at distinct applied potentials. EIS results corroborate the previous results, presenting a higher charge-transfer resistance and a lower chemical capacitance for the 1.00 C electrode film, the last one in accordance with the open-circuit voltage decay. |
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Photoelectrochemical characterization of ITO/TiO2 electrodes obtained by cathodic electrodeposition from aqueous solutionPhotoanodesITO/TiO2 electrodesCathodic electrodepositionElectrochemical impedance spectroscopyIn the present work, the photoelectrochemical characterization of ITO/TiO2 electrodes electrosynthesized at two distinct TiO2 film charges (0.35 and 1.00 C) was performed. Scanning electron microscopy presented a globular-like nanostructure and a typical morphology that are dependent on the growing charge, where the photoelectrode synthesized at 0.35 C presented a more homogeneous morphology. Such dependence was also observed at the photoelectrochemical response, once the photoactivity for the photoelectrode synthesized at 0.35 C was better than the photoelectrode synthesized at 1.00 C, which was explained by the surface recombination process and the electron lifetime. In order to explore the charge-transfer process and the displacement of the quasi-Fermi level upon illumination, electrochemical impedance spectroscopy (EIS) was performed at distinct applied potentials. EIS results corroborate the previous results, presenting a higher charge-transfer resistance and a lower chemical capacitance for the 1.00 C electrode film, the last one in accordance with the open-circuit voltage decay.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)National Institute for Science and Technology on Organic Electronics (INEO)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Fundacao Araucaria do Estado do ParanaUniv Tecnol Fed Parana, BR-84016210 Ponta Grossa, PR, BrazilUniv Fed Mato Grosso, GENMAT Grp Eletroquim & Novos Mat, BR-78060900 Cuiaba, MT, BrazilUniv Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, BrazilUniv Estadual Paulista, BR-15385000 Ilha Solteira, SP, BrazilUniv Integracao Latinoamer, BR-85866000 Foz Do Iguacu, PR, BrazilUniv Estadual Ponta Grossa, BR-84030900 Ponta Grossa, PR, BrazilUniv Estadual Paulista, BR-15385000 Ilha Solteira, SP, BrazilCNPq: 446320/2014-5CNPq: 158984/2014-5SpringerUniv Tecnol Fed ParanaUniversidade Federal de Mato Grosso do Sul (UFMS)Universidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Univ Integracao LatinoamerUniversidade Estadual de Ponta Grossa (UEPG)Marchesi, L. F.Freitas, R. G.Spada, E. R.Paula, F. R. [UNESP]Goes, M. S.Garcia, J. R.2018-11-26T17:55:37Z2018-11-26T17:55:37Z2015-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2205-2211application/pdfhttp://dx.doi.org/10.1007/s10008-015-2848-1Journal Of Solid State Electrochemistry. New York: Springer, v. 19, n. 8, p. 2205-2211, 2015.1432-8488http://hdl.handle.net/11449/16469010.1007/s10008-015-2848-1WOS:000358546700002WOS000358546700002.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Solid State Electrochemistryinfo:eu-repo/semantics/openAccess2023-10-16T06:02:54Zoai:repositorio.unesp.br:11449/164690Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-16T06:02:54Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Photoelectrochemical characterization of ITO/TiO2 electrodes obtained by cathodic electrodeposition from aqueous solution |
title |
Photoelectrochemical characterization of ITO/TiO2 electrodes obtained by cathodic electrodeposition from aqueous solution |
spellingShingle |
Photoelectrochemical characterization of ITO/TiO2 electrodes obtained by cathodic electrodeposition from aqueous solution Marchesi, L. F. Photoanodes ITO/TiO2 electrodes Cathodic electrodeposition Electrochemical impedance spectroscopy |
title_short |
Photoelectrochemical characterization of ITO/TiO2 electrodes obtained by cathodic electrodeposition from aqueous solution |
title_full |
Photoelectrochemical characterization of ITO/TiO2 electrodes obtained by cathodic electrodeposition from aqueous solution |
title_fullStr |
Photoelectrochemical characterization of ITO/TiO2 electrodes obtained by cathodic electrodeposition from aqueous solution |
title_full_unstemmed |
Photoelectrochemical characterization of ITO/TiO2 electrodes obtained by cathodic electrodeposition from aqueous solution |
title_sort |
Photoelectrochemical characterization of ITO/TiO2 electrodes obtained by cathodic electrodeposition from aqueous solution |
author |
Marchesi, L. F. |
author_facet |
Marchesi, L. F. Freitas, R. G. Spada, E. R. Paula, F. R. [UNESP] Goes, M. S. Garcia, J. R. |
author_role |
author |
author2 |
Freitas, R. G. Spada, E. R. Paula, F. R. [UNESP] Goes, M. S. Garcia, J. R. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Univ Tecnol Fed Parana Universidade Federal de Mato Grosso do Sul (UFMS) Universidade de São Paulo (USP) Universidade Estadual Paulista (Unesp) Univ Integracao Latinoamer Universidade Estadual de Ponta Grossa (UEPG) |
dc.contributor.author.fl_str_mv |
Marchesi, L. F. Freitas, R. G. Spada, E. R. Paula, F. R. [UNESP] Goes, M. S. Garcia, J. R. |
dc.subject.por.fl_str_mv |
Photoanodes ITO/TiO2 electrodes Cathodic electrodeposition Electrochemical impedance spectroscopy |
topic |
Photoanodes ITO/TiO2 electrodes Cathodic electrodeposition Electrochemical impedance spectroscopy |
description |
In the present work, the photoelectrochemical characterization of ITO/TiO2 electrodes electrosynthesized at two distinct TiO2 film charges (0.35 and 1.00 C) was performed. Scanning electron microscopy presented a globular-like nanostructure and a typical morphology that are dependent on the growing charge, where the photoelectrode synthesized at 0.35 C presented a more homogeneous morphology. Such dependence was also observed at the photoelectrochemical response, once the photoactivity for the photoelectrode synthesized at 0.35 C was better than the photoelectrode synthesized at 1.00 C, which was explained by the surface recombination process and the electron lifetime. In order to explore the charge-transfer process and the displacement of the quasi-Fermi level upon illumination, electrochemical impedance spectroscopy (EIS) was performed at distinct applied potentials. EIS results corroborate the previous results, presenting a higher charge-transfer resistance and a lower chemical capacitance for the 1.00 C electrode film, the last one in accordance with the open-circuit voltage decay. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-08-01 2018-11-26T17:55:37Z 2018-11-26T17:55:37Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s10008-015-2848-1 Journal Of Solid State Electrochemistry. New York: Springer, v. 19, n. 8, p. 2205-2211, 2015. 1432-8488 http://hdl.handle.net/11449/164690 10.1007/s10008-015-2848-1 WOS:000358546700002 WOS000358546700002.pdf |
url |
http://dx.doi.org/10.1007/s10008-015-2848-1 http://hdl.handle.net/11449/164690 |
identifier_str_mv |
Journal Of Solid State Electrochemistry. New York: Springer, v. 19, n. 8, p. 2205-2211, 2015. 1432-8488 10.1007/s10008-015-2848-1 WOS:000358546700002 WOS000358546700002.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal Of Solid State Electrochemistry |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
2205-2211 application/pdf |
dc.publisher.none.fl_str_mv |
Springer |
publisher.none.fl_str_mv |
Springer |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1797789407964561408 |