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

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dc.contributor.authorAlmeida, Lucio C. [UNESP]
dc.contributor.authorZanoni, Maria V. B. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-12-03T13:08:39Z
dc.date.available2014-12-03T13:08:39Z
dc.date.issued2014-03-01
dc.description.abstractPt 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.en
dc.description.affiliationUniv Estadual Paulista Julio Mesquita Filho UNESP, Dept Quim, Inst Quim, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista Julio Mesquita Filho UNESP, Dept Quim, Inst Quim, BR-14800900 Araraquara, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 11/21606-9
dc.format.extent579-588
dc.identifierhttp://dx.doi.org/10.5935/0103-5053.20140034
dc.identifier.citationJournal Of The Brazilian Chemical Society. Sao Paulo: Soc Brasileira Quimica, v. 25, n. 3, p. 579-588, 2014.
dc.identifier.doi10.5935/0103-5053.20140034
dc.identifier.fileS0103-50532014000300022.pdf
dc.identifier.issn0103-5053
dc.identifier.scieloS0103-50532014000300022
dc.identifier.urihttp://hdl.handle.net/11449/111431
dc.identifier.wosWOS:000333329300022
dc.language.isoeng
dc.publisherSoc Brasileira Quimica
dc.relation.ispartofJournal of the Brazilian Chemical Society
dc.relation.ispartofjcr1.444
dc.relation.ispartofsjr0,357
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectphotoelectrocatalytic processen
dc.subjectPt decorated TiO2en
dc.subjectdye degradationen
dc.titleDecoration of Ti/TiO2 Nanotubes with Pt Nanoparticles for Enhanced UV-Vis Light Absorption in Photoelectrocatalytic Processen
dc.typeArtigo
dcterms.rightsHolderSoc Brasileira Quimica
dspace.entity.typePublication
unesp.author.orcid0000-0002-2296-1393[2]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentQuímica Analítica - IQARpt

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Araraquara - IQAR - Instituto de Química