Degradation of the Dye Reactive Blue 4 by Coupled Photoassisted Electrochemistry at DSA®-Type Electrode

Detalhes bibliográficos
Autor(a) principal: Silva,Rodrigo G. da
Data de Publicação: 2016
Outros Autores: Andrade,Adalgisa R. de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532016000500857
Resumo: We investigated the photoelectrochemical oxidation of the dye Reactive Blue 4 in the presence of a DSA®-type electrode of nominal composition Ti/Ru0.3Ti0.7O2 under ultraviolet radiation, aiming to enhance the degradation yields of this dye. We conducted the photoelectrocatalytic treatment under galvanostatic control, using an 80 W mercury vapor lamp as the UV source. We also compared unassisted electrooxidative processes and photocatalytic processes with photoelectrochemical oxidation, to gain better insight into the employed advanced oxidation processes and to evaluate their applicability. The photoelectrooxidative process conducted at 37.8 mA cm-2 promoted fast color removal in the tested solution. The chemical oxygen demand and total organic carbon decreased by approximately 64.7 and 42.7%, respectively. High performance liquid chromatography, gas chromatography coupled to mass spectrometry helped to identify the intermediate compounds produced along the photoelectrochemical process, namely phthalic anhydride, phthalimide, phthalide, 1,3-indanone, and benzoic acid.
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spelling Degradation of the Dye Reactive Blue 4 by Coupled Photoassisted Electrochemistry at DSA®-Type ElectrodeReactive Blue 4photoelectrochemical oxidationDSA® electrodeenvironmental electrochemistryWe investigated the photoelectrochemical oxidation of the dye Reactive Blue 4 in the presence of a DSA®-type electrode of nominal composition Ti/Ru0.3Ti0.7O2 under ultraviolet radiation, aiming to enhance the degradation yields of this dye. We conducted the photoelectrocatalytic treatment under galvanostatic control, using an 80 W mercury vapor lamp as the UV source. We also compared unassisted electrooxidative processes and photocatalytic processes with photoelectrochemical oxidation, to gain better insight into the employed advanced oxidation processes and to evaluate their applicability. The photoelectrooxidative process conducted at 37.8 mA cm-2 promoted fast color removal in the tested solution. The chemical oxygen demand and total organic carbon decreased by approximately 64.7 and 42.7%, respectively. High performance liquid chromatography, gas chromatography coupled to mass spectrometry helped to identify the intermediate compounds produced along the photoelectrochemical process, namely phthalic anhydride, phthalimide, phthalide, 1,3-indanone, and benzoic acid.Sociedade Brasileira de Química2016-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532016000500857Journal of the Brazilian Chemical Society v.27 n.5 2016reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0103-5053.20150338info:eu-repo/semantics/openAccessSilva,Rodrigo G. daAndrade,Adalgisa R. deeng2016-05-18T00:00:00Zoai:scielo:S0103-50532016000500857Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2016-05-18T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Degradation of the Dye Reactive Blue 4 by Coupled Photoassisted Electrochemistry at DSA®-Type Electrode
title Degradation of the Dye Reactive Blue 4 by Coupled Photoassisted Electrochemistry at DSA®-Type Electrode
spellingShingle Degradation of the Dye Reactive Blue 4 by Coupled Photoassisted Electrochemistry at DSA®-Type Electrode
Silva,Rodrigo G. da
Reactive Blue 4
photoelectrochemical oxidation
DSA® electrode
environmental electrochemistry
title_short Degradation of the Dye Reactive Blue 4 by Coupled Photoassisted Electrochemistry at DSA®-Type Electrode
title_full Degradation of the Dye Reactive Blue 4 by Coupled Photoassisted Electrochemistry at DSA®-Type Electrode
title_fullStr Degradation of the Dye Reactive Blue 4 by Coupled Photoassisted Electrochemistry at DSA®-Type Electrode
title_full_unstemmed Degradation of the Dye Reactive Blue 4 by Coupled Photoassisted Electrochemistry at DSA®-Type Electrode
title_sort Degradation of the Dye Reactive Blue 4 by Coupled Photoassisted Electrochemistry at DSA®-Type Electrode
author Silva,Rodrigo G. da
author_facet Silva,Rodrigo G. da
Andrade,Adalgisa R. de
author_role author
author2 Andrade,Adalgisa R. de
author2_role author
dc.contributor.author.fl_str_mv Silva,Rodrigo G. da
Andrade,Adalgisa R. de
dc.subject.por.fl_str_mv Reactive Blue 4
photoelectrochemical oxidation
DSA® electrode
environmental electrochemistry
topic Reactive Blue 4
photoelectrochemical oxidation
DSA® electrode
environmental electrochemistry
description We investigated the photoelectrochemical oxidation of the dye Reactive Blue 4 in the presence of a DSA®-type electrode of nominal composition Ti/Ru0.3Ti0.7O2 under ultraviolet radiation, aiming to enhance the degradation yields of this dye. We conducted the photoelectrocatalytic treatment under galvanostatic control, using an 80 W mercury vapor lamp as the UV source. We also compared unassisted electrooxidative processes and photocatalytic processes with photoelectrochemical oxidation, to gain better insight into the employed advanced oxidation processes and to evaluate their applicability. The photoelectrooxidative process conducted at 37.8 mA cm-2 promoted fast color removal in the tested solution. The chemical oxygen demand and total organic carbon decreased by approximately 64.7 and 42.7%, respectively. High performance liquid chromatography, gas chromatography coupled to mass spectrometry helped to identify the intermediate compounds produced along the photoelectrochemical process, namely phthalic anhydride, phthalimide, phthalide, 1,3-indanone, and benzoic acid.
publishDate 2016
dc.date.none.fl_str_mv 2016-05-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532016000500857
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532016000500857
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.5935/0103-5053.20150338
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.27 n.5 2016
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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