Solar light efficient photocatalytic activity degradation of emergent contaminants by coated TiO2 nanoparticles

Autores
Villanueva, María Emilia; Copello, Guillermo Javier; Campodallorto, Viviana
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The photocatalytic degradation of different emergent contaminants in aqueous solutions has been studied by using oligomer-coated TiO2 nanoparticles under solar light irradiation. The oligomer was synthesized using methacrylic acid, ethylene glycol diglycidyl ether and imidazole. The material was characterized by SEM, DLS, FT-IR and FT-Raman and UV-vis spectroscopy. The photocatalytic behavior with the model azo-dye methyl orange was analyzed in different conditions (initial concentration and pH) and the kinetic parameters were described by using the Langmuir-Hinshelwood model. The reuse and photocorrosion of the nanoparticles was studied up to seven operative cycles. The oligomer-coated nanoparticles showed better performance than the uncoated ones due to an increment in absorption in the visible light region. The charge transfer process would form electron/hole pairs (e-/h+) with the holes localized on the organic ligands (most probably on imidazole residues from oligomers) and the electrons in the conduction band of TiO2. Supernatant safety after the photocatalytic treatment was examined by the lettuce seeds assay and no toxicity was found. The versatility of the material was studied by exposing it to different emergent contaminants (ciprofloxacin, trimethoprim and chloramphenicol).
Fil: Villanueva, María Emilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Metabolismo del Fármaco. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Metabolismo del Fármaco; Argentina
Fil: Copello, Guillermo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Metabolismo del Fármaco. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Metabolismo del Fármaco; Argentina
Fil: Campodallorto, Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Metabolismo del Fármaco. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Metabolismo del Fármaco; Argentina
Materia
PHOTOCATALYSIS
TiO2 NANOPARTICLES
OLIGOMERS
DEGRADATION OF POLLUTANTS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/86996
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Solar light efficient photocatalytic activity degradation of emergent contaminants by coated TiO2 nanoparticlesVillanueva, María EmiliaCopello, Guillermo JavierCampodallorto, VivianaPHOTOCATALYSISTiO2 NANOPARTICLESOLIGOMERSDEGRADATION OF POLLUTANTShttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The photocatalytic degradation of different emergent contaminants in aqueous solutions has been studied by using oligomer-coated TiO2 nanoparticles under solar light irradiation. The oligomer was synthesized using methacrylic acid, ethylene glycol diglycidyl ether and imidazole. The material was characterized by SEM, DLS, FT-IR and FT-Raman and UV-vis spectroscopy. The photocatalytic behavior with the model azo-dye methyl orange was analyzed in different conditions (initial concentration and pH) and the kinetic parameters were described by using the Langmuir-Hinshelwood model. The reuse and photocorrosion of the nanoparticles was studied up to seven operative cycles. The oligomer-coated nanoparticles showed better performance than the uncoated ones due to an increment in absorption in the visible light region. The charge transfer process would form electron/hole pairs (e-/h+) with the holes localized on the organic ligands (most probably on imidazole residues from oligomers) and the electrons in the conduction band of TiO2. Supernatant safety after the photocatalytic treatment was examined by the lettuce seeds assay and no toxicity was found. The versatility of the material was studied by exposing it to different emergent contaminants (ciprofloxacin, trimethoprim and chloramphenicol).Fil: Villanueva, María Emilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Metabolismo del Fármaco. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Metabolismo del Fármaco; ArgentinaFil: Copello, Guillermo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Metabolismo del Fármaco. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Metabolismo del Fármaco; ArgentinaFil: Campodallorto, Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Metabolismo del Fármaco. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Metabolismo del Fármaco; ArgentinaRoyal Society of Chemistry2018-08-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/86996Villanueva, María Emilia; Copello, Guillermo Javier; Campodallorto, Viviana; Solar light efficient photocatalytic activity degradation of emergent contaminants by coated TiO2 nanoparticles; Royal Society of Chemistry; New Journal of Chemistry; 42; 18; 9-8-2018; 15405-154121144-0546CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1039/c8nj02332hinfo:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlelanding/2018/NJ/C8NJ02332H#!divAbstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:47:17Zoai:ri.conicet.gov.ar:11336/86996instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:47:18.227CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Solar light efficient photocatalytic activity degradation of emergent contaminants by coated TiO2 nanoparticles
title Solar light efficient photocatalytic activity degradation of emergent contaminants by coated TiO2 nanoparticles
spellingShingle Solar light efficient photocatalytic activity degradation of emergent contaminants by coated TiO2 nanoparticles
Villanueva, María Emilia
PHOTOCATALYSIS
TiO2 NANOPARTICLES
OLIGOMERS
DEGRADATION OF POLLUTANTS
title_short Solar light efficient photocatalytic activity degradation of emergent contaminants by coated TiO2 nanoparticles
title_full Solar light efficient photocatalytic activity degradation of emergent contaminants by coated TiO2 nanoparticles
title_fullStr Solar light efficient photocatalytic activity degradation of emergent contaminants by coated TiO2 nanoparticles
title_full_unstemmed Solar light efficient photocatalytic activity degradation of emergent contaminants by coated TiO2 nanoparticles
title_sort Solar light efficient photocatalytic activity degradation of emergent contaminants by coated TiO2 nanoparticles
dc.creator.none.fl_str_mv Villanueva, María Emilia
Copello, Guillermo Javier
Campodallorto, Viviana
author Villanueva, María Emilia
author_facet Villanueva, María Emilia
Copello, Guillermo Javier
Campodallorto, Viviana
author_role author
author2 Copello, Guillermo Javier
Campodallorto, Viviana
author2_role author
author
dc.subject.none.fl_str_mv PHOTOCATALYSIS
TiO2 NANOPARTICLES
OLIGOMERS
DEGRADATION OF POLLUTANTS
topic PHOTOCATALYSIS
TiO2 NANOPARTICLES
OLIGOMERS
DEGRADATION OF POLLUTANTS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The photocatalytic degradation of different emergent contaminants in aqueous solutions has been studied by using oligomer-coated TiO2 nanoparticles under solar light irradiation. The oligomer was synthesized using methacrylic acid, ethylene glycol diglycidyl ether and imidazole. The material was characterized by SEM, DLS, FT-IR and FT-Raman and UV-vis spectroscopy. The photocatalytic behavior with the model azo-dye methyl orange was analyzed in different conditions (initial concentration and pH) and the kinetic parameters were described by using the Langmuir-Hinshelwood model. The reuse and photocorrosion of the nanoparticles was studied up to seven operative cycles. The oligomer-coated nanoparticles showed better performance than the uncoated ones due to an increment in absorption in the visible light region. The charge transfer process would form electron/hole pairs (e-/h+) with the holes localized on the organic ligands (most probably on imidazole residues from oligomers) and the electrons in the conduction band of TiO2. Supernatant safety after the photocatalytic treatment was examined by the lettuce seeds assay and no toxicity was found. The versatility of the material was studied by exposing it to different emergent contaminants (ciprofloxacin, trimethoprim and chloramphenicol).
Fil: Villanueva, María Emilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Metabolismo del Fármaco. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Metabolismo del Fármaco; Argentina
Fil: Copello, Guillermo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Metabolismo del Fármaco. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Metabolismo del Fármaco; Argentina
Fil: Campodallorto, Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Metabolismo del Fármaco. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Metabolismo del Fármaco; Argentina
description The photocatalytic degradation of different emergent contaminants in aqueous solutions has been studied by using oligomer-coated TiO2 nanoparticles under solar light irradiation. The oligomer was synthesized using methacrylic acid, ethylene glycol diglycidyl ether and imidazole. The material was characterized by SEM, DLS, FT-IR and FT-Raman and UV-vis spectroscopy. The photocatalytic behavior with the model azo-dye methyl orange was analyzed in different conditions (initial concentration and pH) and the kinetic parameters were described by using the Langmuir-Hinshelwood model. The reuse and photocorrosion of the nanoparticles was studied up to seven operative cycles. The oligomer-coated nanoparticles showed better performance than the uncoated ones due to an increment in absorption in the visible light region. The charge transfer process would form electron/hole pairs (e-/h+) with the holes localized on the organic ligands (most probably on imidazole residues from oligomers) and the electrons in the conduction band of TiO2. Supernatant safety after the photocatalytic treatment was examined by the lettuce seeds assay and no toxicity was found. The versatility of the material was studied by exposing it to different emergent contaminants (ciprofloxacin, trimethoprim and chloramphenicol).
publishDate 2018
dc.date.none.fl_str_mv 2018-08-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/86996
Villanueva, María Emilia; Copello, Guillermo Javier; Campodallorto, Viviana; Solar light efficient photocatalytic activity degradation of emergent contaminants by coated TiO2 nanoparticles; Royal Society of Chemistry; New Journal of Chemistry; 42; 18; 9-8-2018; 15405-15412
1144-0546
CONICET Digital
CONICET
url http://hdl.handle.net/11336/86996
identifier_str_mv Villanueva, María Emilia; Copello, Guillermo Javier; Campodallorto, Viviana; Solar light efficient photocatalytic activity degradation of emergent contaminants by coated TiO2 nanoparticles; Royal Society of Chemistry; New Journal of Chemistry; 42; 18; 9-8-2018; 15405-15412
1144-0546
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1039/c8nj02332h
info:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlelanding/2018/NJ/C8NJ02332H#!divAbstract
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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