Highly ordered TiO2 nanotube arrays and photoelectrocatalytic oxidation of aromatic amine

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dc.contributor.authorCardoso, Juliano Carvalho [UNESP]
dc.contributor.authorLizier, Thiago Mescoloto [UNESP]
dc.contributor.authorZanoni, Maria Valnice Boldrin [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:19:25Z
dc.date.available2014-05-20T14:19:25Z
dc.date.issued2010-08-31
dc.description.abstractSelf-organized Ti/TiO2 nanotubular array electrodes may be achieved by simple electrochemical anodization of Ti foil in NH4F/glycerol water solution. The photocurrent on nanotubular layers is remarkably improved in relation to that obtained on comparable nanoporous TiO2 films created by a sol gel process. The anatase form is priori in the highly ordered TiO2 annealed at 450 degrees C which improves its photoactivity. Both electrodes promote complete degradation of the investigated aromatic amine ODAN (4,4'-oxydianiline) after 120 min of photoeletrocatalytic oxidation with potential of 1.5V and UV irradiation. But, the ODAN mineralization is about 50% more efficient on nanotubular electrodes. The best experimental conditions were found to be pH 2.0 and 0.1 mol L-1 Na2SO4 when the photoelectrode was biased at +1.5 V (vs. SCE). Complete mineralization of the aromatic amine content (100% TOC reduction) was achieved after 2 h. Effects of other electrolytes, pH, amine concentration and applied potentials also have been investigated and are discussed. (C) 2010 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista, Inst Quim, Dept Quim Analit, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Quim, Dept Quim Analit, BR-14801970 Araraquara, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 07/07313-3
dc.format.extent96-102
dc.identifierhttp://dx.doi.org/10.1016/j.apcatb.2010.06.005
dc.identifier.citationApplied Catalysis B-environmental. Amsterdam: Elsevier B.V., v. 99, n. 1-2, p. 96-102, 2010.
dc.identifier.doi10.1016/j.apcatb.2010.06.005
dc.identifier.issn0926-3373
dc.identifier.orcid0000-0002-2296-1393
dc.identifier.urihttp://hdl.handle.net/11449/25858
dc.identifier.wosWOS:000281917200009
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofApplied Catalysis B: Environmental
dc.relation.ispartofjcr11.698
dc.relation.ispartofsjr3,152
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectAromatic aminesen
dc.subjectPhotoelectrocatalysisen
dc.subjectTiO2 nanotubes array electrodesen
dc.subject4,4 '-Oxydianilineen
dc.subjectAmine removalen
dc.titleHighly ordered TiO2 nanotube arrays and photoelectrocatalytic oxidation of aromatic amineen
dc.typeResumo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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Artigos - Química Analítica - IQ