Decoration of Ti/TiO2 Nanotubes with Pt Nanoparticles for Enhanced UV-Vis Light Absorption in Photoelectrocatalytic Process

Detalhes bibliográficos
Autor(a) principal: Almeida, Lucio C. [UNESP]
Data de Publicação: 2014
Outros Autores: Zanoni, Maria V. B. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.5935/0103-5053.20140034
http://hdl.handle.net/11449/111431
Resumo: Pt nanoparticles were decorated on TiO2 nanotube arrays (TiO2NTs) by cathodic deposition. These nanoparticles were uniformly distributed, highly separated and spaced all over TiO2NT surface to shorten deposition times with Pt particle sizes proportional to the applied charges. The Pt/TiO2NT photoelectrode shows an intense absorption peak in the visible region with a significant red shift induced by Pt deposited on TiO2NT surface, decreasing the band gap energy from 3.21 eV to 2.87 eV. Pt/TiO2NT photoelectrode was tested as photoanode in the photoeletrocatalytic oxidation of Acid Red 29 dye with great success. Total decolorization and 92% of total organic carbon removal were obtained after 120 min of treatment by using Pt/TiO2NT photoelectrode which was superior to the values obtained for the undecorated one (87% and 68%, respectively) due to better use of irradiation and minimization of charge recombination.
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spelling Decoration of Ti/TiO2 Nanotubes with Pt Nanoparticles for Enhanced UV-Vis Light Absorption in Photoelectrocatalytic Processphotoelectrocatalytic processPt decorated TiO2dye degradationPt nanoparticles were decorated on TiO2 nanotube arrays (TiO2NTs) by cathodic deposition. These nanoparticles were uniformly distributed, highly separated and spaced all over TiO2NT surface to shorten deposition times with Pt particle sizes proportional to the applied charges. The Pt/TiO2NT photoelectrode shows an intense absorption peak in the visible region with a significant red shift induced by Pt deposited on TiO2NT surface, decreasing the band gap energy from 3.21 eV to 2.87 eV. Pt/TiO2NT photoelectrode was tested as photoanode in the photoeletrocatalytic oxidation of Acid Red 29 dye with great success. Total decolorization and 92% of total organic carbon removal were obtained after 120 min of treatment by using Pt/TiO2NT photoelectrode which was superior to the values obtained for the undecorated one (87% and 68%, respectively) due to better use of irradiation and minimization of charge recombination.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Univ Estadual Paulista Julio Mesquita Filho UNESP, Dept Quim, Inst Quim, BR-14800900 Araraquara, SP, BrazilUniv Estadual Paulista Julio Mesquita Filho UNESP, Dept Quim, Inst Quim, BR-14800900 Araraquara, SP, BrazilFAPESP: 11/21606-9Soc Brasileira QuimicaUniversidade Estadual Paulista (Unesp)Almeida, Lucio C. [UNESP]Zanoni, Maria V. B. [UNESP]2014-12-03T13:08:39Z2014-12-03T13:08:39Z2014-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article579-588application/pdfhttp://dx.doi.org/10.5935/0103-5053.20140034Journal Of The Brazilian Chemical Society. Sao Paulo: Soc Brasileira Quimica, v. 25, n. 3, p. 579-588, 2014.0103-5053http://hdl.handle.net/11449/11143110.5935/0103-5053.20140034S0103-50532014000300022WOS:000333329300022S0103-50532014000300022.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of the Brazilian Chemical Society1.4440,357info:eu-repo/semantics/openAccess2024-01-14T06:23:36Zoai:repositorio.unesp.br:11449/111431Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-01-14T06:23:36Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Decoration of Ti/TiO2 Nanotubes with Pt Nanoparticles for Enhanced UV-Vis Light Absorption in Photoelectrocatalytic Process
title Decoration of Ti/TiO2 Nanotubes with Pt Nanoparticles for Enhanced UV-Vis Light Absorption in Photoelectrocatalytic Process
spellingShingle Decoration of Ti/TiO2 Nanotubes with Pt Nanoparticles for Enhanced UV-Vis Light Absorption in Photoelectrocatalytic Process
Almeida, Lucio C. [UNESP]
photoelectrocatalytic process
Pt decorated TiO2
dye degradation
title_short Decoration of Ti/TiO2 Nanotubes with Pt Nanoparticles for Enhanced UV-Vis Light Absorption in Photoelectrocatalytic Process
title_full Decoration of Ti/TiO2 Nanotubes with Pt Nanoparticles for Enhanced UV-Vis Light Absorption in Photoelectrocatalytic Process
title_fullStr Decoration of Ti/TiO2 Nanotubes with Pt Nanoparticles for Enhanced UV-Vis Light Absorption in Photoelectrocatalytic Process
title_full_unstemmed Decoration of Ti/TiO2 Nanotubes with Pt Nanoparticles for Enhanced UV-Vis Light Absorption in Photoelectrocatalytic Process
title_sort Decoration of Ti/TiO2 Nanotubes with Pt Nanoparticles for Enhanced UV-Vis Light Absorption in Photoelectrocatalytic Process
author Almeida, Lucio C. [UNESP]
author_facet Almeida, Lucio C. [UNESP]
Zanoni, Maria V. B. [UNESP]
author_role author
author2 Zanoni, Maria V. B. [UNESP]
author2_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Almeida, Lucio C. [UNESP]
Zanoni, Maria V. B. [UNESP]
dc.subject.por.fl_str_mv photoelectrocatalytic process
Pt decorated TiO2
dye degradation
topic photoelectrocatalytic process
Pt decorated TiO2
dye degradation
description Pt nanoparticles were decorated on TiO2 nanotube arrays (TiO2NTs) by cathodic deposition. These nanoparticles were uniformly distributed, highly separated and spaced all over TiO2NT surface to shorten deposition times with Pt particle sizes proportional to the applied charges. The Pt/TiO2NT photoelectrode shows an intense absorption peak in the visible region with a significant red shift induced by Pt deposited on TiO2NT surface, decreasing the band gap energy from 3.21 eV to 2.87 eV. Pt/TiO2NT photoelectrode was tested as photoanode in the photoeletrocatalytic oxidation of Acid Red 29 dye with great success. Total decolorization and 92% of total organic carbon removal were obtained after 120 min of treatment by using Pt/TiO2NT photoelectrode which was superior to the values obtained for the undecorated one (87% and 68%, respectively) due to better use of irradiation and minimization of charge recombination.
publishDate 2014
dc.date.none.fl_str_mv 2014-12-03T13:08:39Z
2014-12-03T13:08:39Z
2014-03-01
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/10.5935/0103-5053.20140034
Journal Of The Brazilian Chemical Society. Sao Paulo: Soc Brasileira Quimica, v. 25, n. 3, p. 579-588, 2014.
0103-5053
http://hdl.handle.net/11449/111431
10.5935/0103-5053.20140034
S0103-50532014000300022
WOS:000333329300022
S0103-50532014000300022.pdf
url http://dx.doi.org/10.5935/0103-5053.20140034
http://hdl.handle.net/11449/111431
identifier_str_mv Journal Of The Brazilian Chemical Society. Sao Paulo: Soc Brasileira Quimica, v. 25, n. 3, p. 579-588, 2014.
0103-5053
10.5935/0103-5053.20140034
S0103-50532014000300022
WOS:000333329300022
S0103-50532014000300022.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of the Brazilian Chemical Society
1.444
0,357
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 579-588
application/pdf
dc.publisher.none.fl_str_mv Soc Brasileira Quimica
publisher.none.fl_str_mv Soc Brasileira Quimica
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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