Photocatalyst TiO2-Co: the effect of doping depth profile on methylene blue degradation

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorCarvalho, Hudson W. P.-
Autor(es): dc.creatorBatista, Ana P. L.-
Autor(es): dc.creatorBertholdo, Roberto-
Autor(es): dc.creatorSantilli, Celso V.-
Autor(es): dc.creatorPulcinelli, Sandra H.-
Autor(es): dc.creatorRamalho, Teodorico C.-
Data de aceite: dc.date.accessioned2026-02-09T11:59:35Z-
Data de disponibilização: dc.date.available2026-02-09T11:59:35Z-
Data de envio: dc.date.issued2020-05-18-
Data de envio: dc.date.issued2020-05-18-
Data de envio: dc.date.issued2010-10-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/41015-
Fonte completa do material: dc.identifierhttps://link.springer.com/article/10.1007/s10853-010-4639-5-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1152000-
Descrição: dc.descriptionIn this work, we study the effect of doping depth profile on the photocatalytic and surface properties of TiO2 films. Two thin film layers of TiO2 (200 nm) and Co (5 nm), respectively, were deposited by physical evaporation on glass substrate. These films were annealed for 1 s at 100 and 400 °C and the Co layer was removed by chemical etching. Atomic force microscopy (AFM) phase images showed changes in the surface in function of thermal treatment. The grazing-incidence X-ray fluorescence (GIXRF) measurements indicated that the thermal treatment caused migration of Co atoms to below the surface, the depths found were between 19 and 29 nm. The contact angle showed distinct values in function of the doped profile or Co surface concentration. The UV–vis spectra presented a red shift with the increasing of thermal treatment. Photocatalytical assays were performed by methylene blue discoloration and the higher activity was found for TiO2–Co treated at 400 °C, the ESI-MS showed the fragments formed during the methylene blue decomposition.-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceJournal of Materials Science-
Palavras-chave: dc.subjectTiO2-
Palavras-chave: dc.subjectContact angle-
Palavras-chave: dc.subjectMethylene blue-
Palavras-chave: dc.subjectTiO2 film-
Palavras-chave: dc.subjectContact angle measurement-
Palavras-chave: dc.subjectTitanium dioxide-
Título: dc.titlePhotocatalyst TiO2-Co: the effect of doping depth profile on methylene blue degradation-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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