Evolution of TiO2 nanotubular morphology obtained in ethylene glycol/glycerol mixture and its photoelectrochemical performance
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/172792 |
Resumo: | The evolution of TiO2 nanotubular morphology, synthesized in a mixture of fluorinated ethylene glycol and glycerol electrolyte, was studied as a function of the anodization time. The samples were characterized by FEG-SEM, XRD, XPS, UV-Vis and EIS. The formation of single-or double-walled TiO2 nanotube structure can be efficiently controlled by the anodization time. For anodization times less than 30 minutes, a compact oxide layer is formed, followed by double-walled nanotube formation up to 120 minutes and single-walled nanotubes up to 240 minutes. XPS analyses show that the samples obtained with short anodization time have a high carbon content and oxygenated surface species compared to the longer-time anodized sample; however, binding energy peaks for Ti 2p remained invariant. The performances of TiO2 nanotubular photoelectrodes were evaluated in photoelectrochemical water splitting where TiO2 nanotubes anodized for 120 minutes presented the best performance that was related to their optimal morphology and charge transportation. |
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Bervian, AlexanderCoser, ElianeKhan, SherdilPianaro, Sidnei AntonioAguzzoli, CesarMarcuzzo, Jossano SaldanhaBaldan, Mauricio RibeiroMalfatti, Célia de Fraga2018-02-23T02:24:30Z20171516-1439http://hdl.handle.net/10183/172792001058483The evolution of TiO2 nanotubular morphology, synthesized in a mixture of fluorinated ethylene glycol and glycerol electrolyte, was studied as a function of the anodization time. The samples were characterized by FEG-SEM, XRD, XPS, UV-Vis and EIS. The formation of single-or double-walled TiO2 nanotube structure can be efficiently controlled by the anodization time. For anodization times less than 30 minutes, a compact oxide layer is formed, followed by double-walled nanotube formation up to 120 minutes and single-walled nanotubes up to 240 minutes. XPS analyses show that the samples obtained with short anodization time have a high carbon content and oxygenated surface species compared to the longer-time anodized sample; however, binding energy peaks for Ti 2p remained invariant. The performances of TiO2 nanotubular photoelectrodes were evaluated in photoelectrochemical water splitting where TiO2 nanotubes anodized for 120 minutes presented the best performance that was related to their optimal morphology and charge transportation.application/pdfengMaterials research : ibero-american journal of materials. São Carlos, SP. Vol. 20, no. 4 (July/Aug. 2017 ), p. 962-974NanotubosDióxido de titânioAnodizaçãoFotoeletroquímicaTitanium dioxide nanotubesTiO2AnodizationPhotoelectrochemicalEvolution of TiO2 nanotubular morphology obtained in ethylene glycol/glycerol mixture and its photoelectrochemical performanceinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL001058483.pdf001058483.pdfTexto completo (inglês)application/pdf2102685http://www.lume.ufrgs.br/bitstream/10183/172792/1/001058483.pdf8b1c312224583c4daff5450720632b57MD51TEXT001058483.pdf.txt001058483.pdf.txtExtracted Texttext/plain46402http://www.lume.ufrgs.br/bitstream/10183/172792/2/001058483.pdf.txt7b48d2d97ad26772716b2c6cc82cd21dMD52THUMBNAIL001058483.pdf.jpg001058483.pdf.jpgGenerated Thumbnailimage/jpeg2177http://www.lume.ufrgs.br/bitstream/10183/172792/3/001058483.pdf.jpg797549b0955ba010118ec30fef790439MD5310183/1727922023-08-11 03:52:23.011496oai:www.lume.ufrgs.br:10183/172792Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-08-11T06:52:23Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Evolution of TiO2 nanotubular morphology obtained in ethylene glycol/glycerol mixture and its photoelectrochemical performance |
title |
Evolution of TiO2 nanotubular morphology obtained in ethylene glycol/glycerol mixture and its photoelectrochemical performance |
spellingShingle |
Evolution of TiO2 nanotubular morphology obtained in ethylene glycol/glycerol mixture and its photoelectrochemical performance Bervian, Alexander Nanotubos Dióxido de titânio Anodização Fotoeletroquímica Titanium dioxide nanotubes TiO2 Anodization Photoelectrochemical |
title_short |
Evolution of TiO2 nanotubular morphology obtained in ethylene glycol/glycerol mixture and its photoelectrochemical performance |
title_full |
Evolution of TiO2 nanotubular morphology obtained in ethylene glycol/glycerol mixture and its photoelectrochemical performance |
title_fullStr |
Evolution of TiO2 nanotubular morphology obtained in ethylene glycol/glycerol mixture and its photoelectrochemical performance |
title_full_unstemmed |
Evolution of TiO2 nanotubular morphology obtained in ethylene glycol/glycerol mixture and its photoelectrochemical performance |
title_sort |
Evolution of TiO2 nanotubular morphology obtained in ethylene glycol/glycerol mixture and its photoelectrochemical performance |
author |
Bervian, Alexander |
author_facet |
Bervian, Alexander Coser, Eliane Khan, Sherdil Pianaro, Sidnei Antonio Aguzzoli, Cesar Marcuzzo, Jossano Saldanha Baldan, Mauricio Ribeiro Malfatti, Célia de Fraga |
author_role |
author |
author2 |
Coser, Eliane Khan, Sherdil Pianaro, Sidnei Antonio Aguzzoli, Cesar Marcuzzo, Jossano Saldanha Baldan, Mauricio Ribeiro Malfatti, Célia de Fraga |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Bervian, Alexander Coser, Eliane Khan, Sherdil Pianaro, Sidnei Antonio Aguzzoli, Cesar Marcuzzo, Jossano Saldanha Baldan, Mauricio Ribeiro Malfatti, Célia de Fraga |
dc.subject.por.fl_str_mv |
Nanotubos Dióxido de titânio Anodização Fotoeletroquímica |
topic |
Nanotubos Dióxido de titânio Anodização Fotoeletroquímica Titanium dioxide nanotubes TiO2 Anodization Photoelectrochemical |
dc.subject.eng.fl_str_mv |
Titanium dioxide nanotubes TiO2 Anodization Photoelectrochemical |
description |
The evolution of TiO2 nanotubular morphology, synthesized in a mixture of fluorinated ethylene glycol and glycerol electrolyte, was studied as a function of the anodization time. The samples were characterized by FEG-SEM, XRD, XPS, UV-Vis and EIS. The formation of single-or double-walled TiO2 nanotube structure can be efficiently controlled by the anodization time. For anodization times less than 30 minutes, a compact oxide layer is formed, followed by double-walled nanotube formation up to 120 minutes and single-walled nanotubes up to 240 minutes. XPS analyses show that the samples obtained with short anodization time have a high carbon content and oxygenated surface species compared to the longer-time anodized sample; however, binding energy peaks for Ti 2p remained invariant. The performances of TiO2 nanotubular photoelectrodes were evaluated in photoelectrochemical water splitting where TiO2 nanotubes anodized for 120 minutes presented the best performance that was related to their optimal morphology and charge transportation. |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017 |
dc.date.accessioned.fl_str_mv |
2018-02-23T02:24:30Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
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info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/172792 |
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1516-1439 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001058483 |
identifier_str_mv |
1516-1439 001058483 |
url |
http://hdl.handle.net/10183/172792 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Materials research : ibero-american journal of materials. São Carlos, SP. Vol. 20, no. 4 (July/Aug. 2017 ), p. 962-974 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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