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

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 photoelectroche...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Gómez Velázquez, Laura S., Dell'Arciprete, María Laura, Madriz Ruiz, Lorean Mercedes, González, Mónica Cristina
Formato: Articulo
Lenguaje:Inglés
Publicado: 2023
Materias:
Química
Carbon nitride
Azo dyes
Hydrogen peroxide
Visible light
Urea
Reactive species
Vibrio Fischeri
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/160258
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-160258
record_format dspace
spelling I19-R120-10915-1602582023-11-16T20:06:44Z http://sedici.unlp.edu.ar/handle/10915/160258 Carbon nitride from urea: mechanistic study on photocatalytic hydrogen peroxide production for methyl orange removal Gómez Velázquez, Laura S. Dell'Arciprete, María Laura Madriz Ruiz, Lorean Mercedes González, Mónica Cristina 2023 2023-11-16T18:02:30Z en Química Carbon nitride Azo dyes Hydrogen peroxide Visible light Urea Reactive species Vibrio Fischeri 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 Articulo Articulo http://creativecommons.org/licenses/by-nc-nd/4.0/ Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Carbon nitride
Azo dyes
Hydrogen peroxide
Visible light
Urea
Reactive species
Vibrio Fischeri
spellingShingle Química
Carbon nitride
Azo dyes
Hydrogen peroxide
Visible light
Urea
Reactive species
Vibrio Fischeri
Gómez Velázquez, Laura S.
Dell'Arciprete, María Laura
Madriz Ruiz, Lorean Mercedes
González, Mónica Cristina
Carbon nitride from urea: mechanistic study on photocatalytic hydrogen peroxide production for methyl orange removal
topic_facet Química
Carbon nitride
Azo dyes
Hydrogen peroxide
Visible light
Urea
Reactive species
Vibrio Fischeri
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.
format Articulo
Articulo
author Gómez Velázquez, Laura S.
Dell'Arciprete, María Laura
Madriz Ruiz, Lorean Mercedes
González, Mónica Cristina
author_facet Gómez Velázquez, Laura S.
Dell'Arciprete, María Laura
Madriz Ruiz, Lorean Mercedes
González, Mónica Cristina
author_sort Gómez Velázquez, Laura S.
title Carbon nitride from urea: mechanistic study on photocatalytic hydrogen peroxide production for methyl orange removal
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
publishDate 2023
url http://sedici.unlp.edu.ar/handle/10915/160258
work_keys_str_mv AT gomezvelazquezlauras carbonnitridefromureamechanisticstudyonphotocatalytichydrogenperoxideproductionformethylorangeremoval
AT dellarcipretemarialaura carbonnitridefromureamechanisticstudyonphotocatalytichydrogenperoxideproductionformethylorangeremoval
AT madrizruizloreanmercedes carbonnitridefromureamechanisticstudyonphotocatalytichydrogenperoxideproductionformethylorangeremoval
AT gonzalezmonicacristina carbonnitridefromureamechanisticstudyonphotocatalytichydrogenperoxideproductionformethylorangeremoval
_version_ 1807221877392801792

Ejemplares similares