Preparation and performance of TiO2-ZnO/CNT hetero-nanostructures applied to photodegradation of organic dye

Detalhes bibliográficos
Autor(a) principal: Da Dalt, Silvana
Data de Publicação: 2016
Outros Autores: Alves, Annelise Kopp, Bergmann, Carlos Perez
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/150810
Resumo: Water pollution by organic compounds is one of the major challenges faced by industries that use dyeing processes. Thus, some methods were developed for degrading dyes in wastewaters, including heterogeneous photocatalysis by semiconductor oxides. However, these oxides have limited photocatalytic activity due to the fast recombination of photogenerated electron–hole pairs. The aim of this study is the use of a carbon nanotube (CNT) and TiO2-ZnO oxide junction from modified sol-gel method to promote the degradation of organic dye through the photocatalytic activity of these nanocomposites. TiO2-ZnO/CNT nanocomposites were studied by X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscope (SEM) and photocatalytic decomposition of organic dyes. The results of photocatalysis show up to 60% the efficiency of the samples in the removal of dye.
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spelling Da Dalt, SilvanaAlves, Annelise KoppBergmann, Carlos Perez2017-01-14T02:23:48Z20161516-1439http://hdl.handle.net/10183/150810001010278Water pollution by organic compounds is one of the major challenges faced by industries that use dyeing processes. Thus, some methods were developed for degrading dyes in wastewaters, including heterogeneous photocatalysis by semiconductor oxides. However, these oxides have limited photocatalytic activity due to the fast recombination of photogenerated electron–hole pairs. The aim of this study is the use of a carbon nanotube (CNT) and TiO2-ZnO oxide junction from modified sol-gel method to promote the degradation of organic dye through the photocatalytic activity of these nanocomposites. TiO2-ZnO/CNT nanocomposites were studied by X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscope (SEM) and photocatalytic decomposition of organic dyes. The results of photocatalysis show up to 60% the efficiency of the samples in the removal of dye.application/pdfengMaterials research : ibero-american journal of materials. São Carlos, SP. Vol. 19, no.6 (Nov./Dec. 2016), p. 1372-1375Nanotubos de carbonoNanocompósitosFotocatáliseDióxido de titânioTiO2-ZnO/CNTNanocompositesHeterogeneous photocatalysisDegradation dyePreparation and performance of TiO2-ZnO/CNT hetero-nanostructures applied to photodegradation of organic dyeinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL001010278.pdf001010278.pdfTexto completo (inglês)application/pdf943052http://www.lume.ufrgs.br/bitstream/10183/150810/1/001010278.pdfeecafbd8f20d918ea8d120c000c0e5bbMD51TEXT001010278.pdf.txt001010278.pdf.txtExtracted Texttext/plain15524http://www.lume.ufrgs.br/bitstream/10183/150810/2/001010278.pdf.txt4b1316433bd51d2eb7a5a0c16c578159MD52THUMBNAIL001010278.pdf.jpg001010278.pdf.jpgGenerated Thumbnailimage/jpeg2089http://www.lume.ufrgs.br/bitstream/10183/150810/3/001010278.pdf.jpg29fe4d8c70554514c1debcd90bc527aaMD5310183/1508102019-02-13 02:33:44.354372oai:www.lume.ufrgs.br:10183/150810Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2019-02-13T04:33:44Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Preparation and performance of TiO2-ZnO/CNT hetero-nanostructures applied to photodegradation of organic dye
title Preparation and performance of TiO2-ZnO/CNT hetero-nanostructures applied to photodegradation of organic dye
spellingShingle Preparation and performance of TiO2-ZnO/CNT hetero-nanostructures applied to photodegradation of organic dye
Da Dalt, Silvana
Nanotubos de carbono
Nanocompósitos
Fotocatálise
Dióxido de titânio
TiO2-ZnO/CNT
Nanocomposites
Heterogeneous photocatalysis
Degradation dye
title_short Preparation and performance of TiO2-ZnO/CNT hetero-nanostructures applied to photodegradation of organic dye
title_full Preparation and performance of TiO2-ZnO/CNT hetero-nanostructures applied to photodegradation of organic dye
title_fullStr Preparation and performance of TiO2-ZnO/CNT hetero-nanostructures applied to photodegradation of organic dye
title_full_unstemmed Preparation and performance of TiO2-ZnO/CNT hetero-nanostructures applied to photodegradation of organic dye
title_sort Preparation and performance of TiO2-ZnO/CNT hetero-nanostructures applied to photodegradation of organic dye
author Da Dalt, Silvana
author_facet Da Dalt, Silvana
Alves, Annelise Kopp
Bergmann, Carlos Perez
author_role author
author2 Alves, Annelise Kopp
Bergmann, Carlos Perez
author2_role author
author
dc.contributor.author.fl_str_mv Da Dalt, Silvana
Alves, Annelise Kopp
Bergmann, Carlos Perez
dc.subject.por.fl_str_mv Nanotubos de carbono
Nanocompósitos
Fotocatálise
Dióxido de titânio
topic Nanotubos de carbono
Nanocompósitos
Fotocatálise
Dióxido de titânio
TiO2-ZnO/CNT
Nanocomposites
Heterogeneous photocatalysis
Degradation dye
dc.subject.eng.fl_str_mv TiO2-ZnO/CNT
Nanocomposites
Heterogeneous photocatalysis
Degradation dye
description Water pollution by organic compounds is one of the major challenges faced by industries that use dyeing processes. Thus, some methods were developed for degrading dyes in wastewaters, including heterogeneous photocatalysis by semiconductor oxides. However, these oxides have limited photocatalytic activity due to the fast recombination of photogenerated electron–hole pairs. The aim of this study is the use of a carbon nanotube (CNT) and TiO2-ZnO oxide junction from modified sol-gel method to promote the degradation of organic dye through the photocatalytic activity of these nanocomposites. TiO2-ZnO/CNT nanocomposites were studied by X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscope (SEM) and photocatalytic decomposition of organic dyes. The results of photocatalysis show up to 60% the efficiency of the samples in the removal of dye.
publishDate 2016
dc.date.issued.fl_str_mv 2016
dc.date.accessioned.fl_str_mv 2017-01-14T02:23:48Z
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/150810
dc.identifier.issn.pt_BR.fl_str_mv 1516-1439
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dc.relation.ispartof.pt_BR.fl_str_mv Materials research : ibero-american journal of materials. São Carlos, SP. Vol. 19, no.6 (Nov./Dec. 2016), p. 1372-1375
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