Efficient photoelectrochemical reduction of nitrite to ammonium and nitrogen containing gaseous species using Ti/TiO2 nanotube electrodes

Detalhes bibliográficos
Autor(a) principal: Sayão,Fabiana A.
Data de Publicação: 2014
Outros Autores: Nuñez,Luciana, Zanoni,Maria V. B.
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=S0103-50532014000700002
Resumo: The present work describes a suitable method for removing nitrite contaminant from water by using a photoelectrocatalytical method. A Ti/TiO2 nanotube electrode was used as a cathode under UV irradiation and applied potential of -0.2 V vs. Ag/AgCl and it led to 100% of nitrite removal after 6 min of photoelectrolysis conducted in NaCl 7 mmol L-1, pH 7 and in absence of dissolved oxygen. Nitrite reduction on Ti/TiO2 photoelectrodes occurs in the cathodic compartment cell via electrons generated when the electrode is under UV irradiation leading to a generation of 7% of remaining ammonium and 93% nitrogen containing gaseous species after 6 min of treatment. The results indicate that the method could be an efficient tool for the treatment of nitrite in water containing nitrite.
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spelling Efficient photoelectrochemical reduction of nitrite to ammonium and nitrogen containing gaseous species using Ti/TiO2 nanotube electrodesnitritephotoelectrocatalysisTiO2 nanotubesphotocathodeThe present work describes a suitable method for removing nitrite contaminant from water by using a photoelectrocatalytical method. A Ti/TiO2 nanotube electrode was used as a cathode under UV irradiation and applied potential of -0.2 V vs. Ag/AgCl and it led to 100% of nitrite removal after 6 min of photoelectrolysis conducted in NaCl 7 mmol L-1, pH 7 and in absence of dissolved oxygen. Nitrite reduction on Ti/TiO2 photoelectrodes occurs in the cathodic compartment cell via electrons generated when the electrode is under UV irradiation leading to a generation of 7% of remaining ammonium and 93% nitrogen containing gaseous species after 6 min of treatment. The results indicate that the method could be an efficient tool for the treatment of nitrite in water containing nitrite.Sociedade Brasileira de Química2014-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000700002Journal of the Brazilian Chemical Society v.25 n.7 2014reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0103-5053.20140091info:eu-repo/semantics/openAccessSayão,Fabiana A.Nuñez,LucianaZanoni,Maria V. B.eng2014-07-17T00:00:00Zoai:scielo:S0103-50532014000700002Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2014-07-17T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Efficient photoelectrochemical reduction of nitrite to ammonium and nitrogen containing gaseous species using Ti/TiO2 nanotube electrodes
title Efficient photoelectrochemical reduction of nitrite to ammonium and nitrogen containing gaseous species using Ti/TiO2 nanotube electrodes
spellingShingle Efficient photoelectrochemical reduction of nitrite to ammonium and nitrogen containing gaseous species using Ti/TiO2 nanotube electrodes
Sayão,Fabiana A.
nitrite
photoelectrocatalysis
TiO2 nanotubes
photocathode
title_short Efficient photoelectrochemical reduction of nitrite to ammonium and nitrogen containing gaseous species using Ti/TiO2 nanotube electrodes
title_full Efficient photoelectrochemical reduction of nitrite to ammonium and nitrogen containing gaseous species using Ti/TiO2 nanotube electrodes
title_fullStr Efficient photoelectrochemical reduction of nitrite to ammonium and nitrogen containing gaseous species using Ti/TiO2 nanotube electrodes
title_full_unstemmed Efficient photoelectrochemical reduction of nitrite to ammonium and nitrogen containing gaseous species using Ti/TiO2 nanotube electrodes
title_sort Efficient photoelectrochemical reduction of nitrite to ammonium and nitrogen containing gaseous species using Ti/TiO2 nanotube electrodes
author Sayão,Fabiana A.
author_facet Sayão,Fabiana A.
Nuñez,Luciana
Zanoni,Maria V. B.
author_role author
author2 Nuñez,Luciana
Zanoni,Maria V. B.
author2_role author
author
dc.contributor.author.fl_str_mv Sayão,Fabiana A.
Nuñez,Luciana
Zanoni,Maria V. B.
dc.subject.por.fl_str_mv nitrite
photoelectrocatalysis
TiO2 nanotubes
photocathode
topic nitrite
photoelectrocatalysis
TiO2 nanotubes
photocathode
description The present work describes a suitable method for removing nitrite contaminant from water by using a photoelectrocatalytical method. A Ti/TiO2 nanotube electrode was used as a cathode under UV irradiation and applied potential of -0.2 V vs. Ag/AgCl and it led to 100% of nitrite removal after 6 min of photoelectrolysis conducted in NaCl 7 mmol L-1, pH 7 and in absence of dissolved oxygen. Nitrite reduction on Ti/TiO2 photoelectrodes occurs in the cathodic compartment cell via electrons generated when the electrode is under UV irradiation leading to a generation of 7% of remaining ammonium and 93% nitrogen containing gaseous species after 6 min of treatment. The results indicate that the method could be an efficient tool for the treatment of nitrite in water containing nitrite.
publishDate 2014
dc.date.none.fl_str_mv 2014-07-01
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=S0103-50532014000700002
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014000700002
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.5935/0103-5053.20140091
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.25 n.7 2014
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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