Carbon nitride from urea: mechanistic study on photocatalytic hydrogen peroxide production for methyl orange removal

Autores
Gómez Velázquez, Laura S.; Dell'Arciprete, María Laura; Madriz Ruiz, Lorean Mercedes; González, Mónica Cristina
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Herein, we investigated the photocatalytic removal of methyl orange (MO) under 350 nm irradiation with carbon nitride (CN) nanoparticles from urea. Participation of photogenerated charge carriers and secondary reactive species in MO degradation process was evaluated by scavenging and photoelectrochemical assays. The experiments suggest that HO* radicals are not only formed from the reaction of water with photogenerated holes, but via a three consecutive one-electron reduction of O₂ involving the formation of H₂O₂. The photocatalytic MO degradation mechanism was proposed. The present results emphasize the importance of charge carriers' separation in the optimization of CN photocatalysis for technological uses.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Química
Carbon nitride
Azo dyes
Hydrogen peroxide
Visible light
Urea
Reactive species
Vibrio Fischeri
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/160258
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/160258
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Carbon nitride from urea: mechanistic study on photocatalytic hydrogen peroxide production for methyl orange removalGómez Velázquez, Laura S.Dell'Arciprete, María LauraMadriz Ruiz, Lorean MercedesGonzález, Mónica CristinaQuímicaCarbon nitrideAzo dyesHydrogen peroxideVisible lightUreaReactive speciesVibrio FischeriHerein, we investigated the photocatalytic removal of methyl orange (MO) under 350 nm irradiation with carbon nitride (CN) nanoparticles from urea. Participation of photogenerated charge carriers and secondary reactive species in MO degradation process was evaluated by scavenging and photoelectrochemical assays. The experiments suggest that HO* radicals are not only formed from the reaction of water with photogenerated holes, but via a three consecutive one-electron reduction of O₂ involving the formation of H₂O₂. The photocatalytic MO degradation mechanism was proposed. The present results emphasize the importance of charge carriers' separation in the optimization of CN photocatalysis for technological uses.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/160258enginfo:eu-repo/semantics/altIdentifier/issn/1566-7367info:eu-repo/semantics/altIdentifier/doi/10.1016/j.catcom.2023.106617info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:41:57Zoai:sedici.unlp.edu.ar:10915/160258Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:41:57.519SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Carbon nitride from urea: mechanistic study on photocatalytic hydrogen peroxide production for methyl orange removal
title Carbon nitride from urea: mechanistic study on photocatalytic hydrogen peroxide production for methyl orange removal
spellingShingle Carbon nitride from urea: mechanistic study on photocatalytic hydrogen peroxide production for methyl orange removal
Gómez Velázquez, Laura S.
Química
Carbon nitride
Azo dyes
Hydrogen peroxide
Visible light
Urea
Reactive species
Vibrio Fischeri
title_short Carbon nitride from urea: mechanistic study on photocatalytic hydrogen peroxide production for methyl orange removal
title_full Carbon nitride from urea: mechanistic study on photocatalytic hydrogen peroxide production for methyl orange removal
title_fullStr Carbon nitride from urea: mechanistic study on photocatalytic hydrogen peroxide production for methyl orange removal
title_full_unstemmed Carbon nitride from urea: mechanistic study on photocatalytic hydrogen peroxide production for methyl orange removal
title_sort Carbon nitride from urea: mechanistic study on photocatalytic hydrogen peroxide production for methyl orange removal
dc.creator.none.fl_str_mv Gómez Velázquez, Laura S.
Dell'Arciprete, María Laura
Madriz Ruiz, Lorean Mercedes
González, Mónica Cristina
author Gómez Velázquez, Laura S.
author_facet Gómez Velázquez, Laura S.
Dell'Arciprete, María Laura
Madriz Ruiz, Lorean Mercedes
González, Mónica Cristina
author_role author
author2 Dell'Arciprete, María Laura
Madriz Ruiz, Lorean Mercedes
González, Mónica Cristina
author2_role author
author
author
dc.subject.none.fl_str_mv Química
Carbon nitride
Azo dyes
Hydrogen peroxide
Visible light
Urea
Reactive species
Vibrio Fischeri
topic Química
Carbon nitride
Azo dyes
Hydrogen peroxide
Visible light
Urea
Reactive species
Vibrio Fischeri
dc.description.none.fl_txt_mv Herein, we investigated the photocatalytic removal of methyl orange (MO) under 350 nm irradiation with carbon nitride (CN) nanoparticles from urea. Participation of photogenerated charge carriers and secondary reactive species in MO degradation process was evaluated by scavenging and photoelectrochemical assays. The experiments suggest that HO* radicals are not only formed from the reaction of water with photogenerated holes, but via a three consecutive one-electron reduction of O₂ involving the formation of H₂O₂. The photocatalytic MO degradation mechanism was proposed. The present results emphasize the importance of charge carriers' separation in the optimization of CN photocatalysis for technological uses.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description Herein, we investigated the photocatalytic removal of methyl orange (MO) under 350 nm irradiation with carbon nitride (CN) nanoparticles from urea. Participation of photogenerated charge carriers and secondary reactive species in MO degradation process was evaluated by scavenging and photoelectrochemical assays. The experiments suggest that HO* radicals are not only formed from the reaction of water with photogenerated holes, but via a three consecutive one-electron reduction of O₂ involving the formation of H₂O₂. The photocatalytic MO degradation mechanism was proposed. The present results emphasize the importance of charge carriers' separation in the optimization of CN photocatalysis for technological uses.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/160258
url http://sedici.unlp.edu.ar/handle/10915/160258
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1566-7367
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.catcom.2023.106617
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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