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.
Data de Publicação: 2014
Outros Autores: Zanoni,Maria V. B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000300022
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.Sociedade Brasileira de Química2014-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000300022Journal of the Brazilian Chemical Society v.25 n.3 2014reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0103-5053.20140034info:eu-repo/semantics/openAccessAlmeida,Lucio C.Zanoni,Maria V. B.eng2014-03-19T00:00:00Zoai:scielo:S0103-50532014000300022Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2014-03-19T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)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.
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.
author_facet Almeida,Lucio C.
Zanoni,Maria V. B.
author_role author
author2 Zanoni,Maria V. B.
author2_role author
dc.contributor.author.fl_str_mv Almeida,Lucio C.
Zanoni,Maria V. B.
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 2014-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000300022
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000300022
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.5935/0103-5053.20140034
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.25 n.3 2014
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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