S-doped TiO2 films applied to UV-Vis heterogeneous photocatalysis

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dc.contributor.authorBENTO, RODRIGO T.
dc.contributor.authorCORREA, OLANDIR V.
dc.contributor.authorPILLIS, MARINA F.
dc.coverageInternacionalpt_BR
dc.creator.eventoBRAZILIAN MRS MEETING, 17thpt_BR
dc.date.accessioned2019-02-04T10:06:36Z
dc.date.available2019-02-04T10:06:36Z
dc.date.eventoSeptember 16-20, 2018pt_BR
dc.description.abstractSemiconductors materials such as titanium dioxide (TiO2) have been applied successfully on photocatalytic process for water treatment [1]. Sulfur doping allows the reduction of the TiO2 band gap energy, and changes the absorption edge from the UV to the visible light region, thus obtaining a higher photocatalytic activity [2]. The aim of this research was to study the photocatalytic behavior of sulfur-doped and undoped TiO2 films in the methyl orange dye degradation under UV and visible radiation. The titanium dioxide films were grown on borosilicate substrates, by metalorganic chemical vapor deposition (MOCVD) technique at 400 °C. The doping step was done in a tubular furnace under H2/2 wt.% H2S atmosphere at 50 °C, 100 °C and 150 °C for 60 minutes. All the films presented on their surfaces the formation of well-defined rounded grains. X-ray diffraction analyses shown that S-TiO2 and TiO2 films exhibited the formation of anatase phase, which suggests that the doping process do not causes meaningful changes in the structure of TiO2 films. MO dye degradation tests indicated that the S-TiO2 films present photocatalytic activity both under UV radiation and visible light. S-TiO2 film doped at 50 °C presented the higher photocatalytic performance, and exhibited 72.1 % of MO dye degradation for a total test time of 300 minutes under visible light. Undoped TiO2 film demonstrated photoactivity only under UV light, with an efficiency of 63.5 %. The photolysis curve showed that without the presence of the catalyst there was no degradation of the dye under both UV radiation and visible light. The results suggest that the sulfur doping caused a shift of the TiO2 absorption edge to the visible region, which allows their practical application under sunlight or visible light bulbs.pt_BR
dc.format.extent825-825pt_BR
dc.identifier.citationBENTO, RODRIGO T.; CORREA, OLANDIR V.; PILLIS, MARINA F. S-doped TiO2 films applied to UV-Vis heterogeneous photocatalysis. In: BRAZILIAN MRS MEETING, 17th, September 16-20, 2018, Natal, RN. <b>Abstract...</b> São Carlos: Aptor Software, 2018. p. 825-825. Disponível em: http://repositorio.ipen.br/handle/123456789/29467.
dc.identifier.orcidhttps://orcid.org/0000-0002-1423-871X
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/29467
dc.localSão Carlos
dc.local.eventoNatal, RNpt_BR
dc.publisherAptor Software
dc.rightsopenAccesspt_BR
dc.titleS-doped TiO2 films applied to UV-Vis heterogeneous photocatalysispt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorMARINA FUSER PILLIS
ipen.autorOLANDIR VERCINO CORREA
ipen.autorRODRIGO TEIXEIRA BENTO
ipen.codigoautor758
ipen.codigoautor488
ipen.codigoautor14417
ipen.contributor.ipenauthorMARINA FUSER PILLIS
ipen.contributor.ipenauthorOLANDIR VERCINO CORREA
ipen.contributor.ipenauthorRODRIGO TEIXEIRA BENTO
ipen.date.recebimento19-02pt_BR
ipen.event.datapadronizada2018pt_BR
ipen.identifier.ipendoc25255pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
relation.isAuthorOfPublication90a23f45-0a62-4233-b676-a06bd75d6cc3
relation.isAuthorOfPublication0d223026-81b0-4a0f-8968-882fd30c88d8
relation.isAuthorOfPublication1399531c-e590-4f6e-9199-69603dcc1642
relation.isAuthorOfPublication.latestForDiscovery1399531c-e590-4f6e-9199-69603dcc1642
sigepi.autor.atividadeBENTO, RODRIGO T.:14417:730:Spt_BR
sigepi.autor.atividadeCORREA, OLANDIR V.:488:730:Npt_BR
sigepi.autor.atividadePILLIS, MARINA F.:758:730:Npt_BR
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