Evolution of TiO2 nanotubular morphology obtained in ethylene glycol/glycerol mixture and its photoelectrochemical performance

Detalhes bibliográficos
Autor(a) principal: Bervian, Alexander
Data de Publicação: 2017
Outros Autores: Coser, Eliane, Khan, Sherdil, Pianaro, Sidnei Antonio, Aguzzoli, Cesar, Marcuzzo, Jossano Saldanha, Baldan, Mauricio Ribeiro, Malfatti, Célia de Fraga
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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spelling 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
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dc.language.iso.fl_str_mv eng
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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
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reponame_str Repositório Institucional da UFRGS
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