Visible light enhanced Cr(VI) removal from aqueous solution by nanoparticulated zerovalent iron

Autores
Montesinos, Victor Nahuel; Quici, Natalia; Litter, Marta Irene
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Cr(VI) removal using nanoparticulated zerovalent iron is enhanced under visible light in comparison with the dark process. Using an Fe:Cr(VI) molar ratio (MR) of 1, 77% removal was obtained after two hours under irradiation, compared with 60% in dark conditions; use of MR 2 allowed almost total Cr(VI) removal. Experiments with selected filters indicated that active wavelengths are above 555 nm. The proposed mechanism involves a heterogeneous photocatalytic process promoted by the iron oxides present as an external layer of the nanoparticles acting as semiconductors after excitation with light, overcoming the passivation of the material taking place in the dark.
Fil: Montesinos, Victor Nahuel. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentina
Fil: Quici, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina
Fil: Litter, Marta Irene. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Nanoparticulated Zerovalent Iron
Hexavalent Chromium
Visible Light
Iron Oxides
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/33023
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Visible light enhanced Cr(VI) removal from aqueous solution by nanoparticulated zerovalent ironMontesinos, Victor NahuelQuici, NataliaLitter, Marta IreneNanoparticulated Zerovalent IronHexavalent ChromiumVisible LightIron Oxideshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Cr(VI) removal using nanoparticulated zerovalent iron is enhanced under visible light in comparison with the dark process. Using an Fe:Cr(VI) molar ratio (MR) of 1, 77% removal was obtained after two hours under irradiation, compared with 60% in dark conditions; use of MR 2 allowed almost total Cr(VI) removal. Experiments with selected filters indicated that active wavelengths are above 555 nm. The proposed mechanism involves a heterogeneous photocatalytic process promoted by the iron oxides present as an external layer of the nanoparticles acting as semiconductors after excitation with light, overcoming the passivation of the material taking place in the dark.Fil: Montesinos, Victor Nahuel. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; ArgentinaFil: Quici, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); ArgentinaFil: Litter, Marta Irene. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier2014-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/33023Montesinos, Victor Nahuel; Quici, Natalia; Litter, Marta Irene; Visible light enhanced Cr(VI) removal from aqueous solution by nanoparticulated zerovalent iron; Elsevier; Catalysis Communications; 46; 2-2014; 57-601566-7367CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1566736713004536info:eu-repo/semantics/altIdentifier/doi/10.1016/j.catcom.2013.11.024info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:02:30Zoai:ri.conicet.gov.ar:11336/33023instacron: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 10:02:31.021CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Visible light enhanced Cr(VI) removal from aqueous solution by nanoparticulated zerovalent iron
title Visible light enhanced Cr(VI) removal from aqueous solution by nanoparticulated zerovalent iron
spellingShingle Visible light enhanced Cr(VI) removal from aqueous solution by nanoparticulated zerovalent iron
Montesinos, Victor Nahuel
Nanoparticulated Zerovalent Iron
Hexavalent Chromium
Visible Light
Iron Oxides
title_short Visible light enhanced Cr(VI) removal from aqueous solution by nanoparticulated zerovalent iron
title_full Visible light enhanced Cr(VI) removal from aqueous solution by nanoparticulated zerovalent iron
title_fullStr Visible light enhanced Cr(VI) removal from aqueous solution by nanoparticulated zerovalent iron
title_full_unstemmed Visible light enhanced Cr(VI) removal from aqueous solution by nanoparticulated zerovalent iron
title_sort Visible light enhanced Cr(VI) removal from aqueous solution by nanoparticulated zerovalent iron
dc.creator.none.fl_str_mv Montesinos, Victor Nahuel
Quici, Natalia
Litter, Marta Irene
author Montesinos, Victor Nahuel
author_facet Montesinos, Victor Nahuel
Quici, Natalia
Litter, Marta Irene
author_role author
author2 Quici, Natalia
Litter, Marta Irene
author2_role author
author
dc.subject.none.fl_str_mv Nanoparticulated Zerovalent Iron
Hexavalent Chromium
Visible Light
Iron Oxides
topic Nanoparticulated Zerovalent Iron
Hexavalent Chromium
Visible Light
Iron Oxides
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Cr(VI) removal using nanoparticulated zerovalent iron is enhanced under visible light in comparison with the dark process. Using an Fe:Cr(VI) molar ratio (MR) of 1, 77% removal was obtained after two hours under irradiation, compared with 60% in dark conditions; use of MR 2 allowed almost total Cr(VI) removal. Experiments with selected filters indicated that active wavelengths are above 555 nm. The proposed mechanism involves a heterogeneous photocatalytic process promoted by the iron oxides present as an external layer of the nanoparticles acting as semiconductors after excitation with light, overcoming the passivation of the material taking place in the dark.
Fil: Montesinos, Victor Nahuel. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; Argentina
Fil: Quici, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina
Fil: Litter, Marta Irene. Comisión Nacional de Energía Atómica. Gerencia del Área de Seguridad Nuclear y Ambiente. Gerencia de Química (CAC); Argentina. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Cr(VI) removal using nanoparticulated zerovalent iron is enhanced under visible light in comparison with the dark process. Using an Fe:Cr(VI) molar ratio (MR) of 1, 77% removal was obtained after two hours under irradiation, compared with 60% in dark conditions; use of MR 2 allowed almost total Cr(VI) removal. Experiments with selected filters indicated that active wavelengths are above 555 nm. The proposed mechanism involves a heterogeneous photocatalytic process promoted by the iron oxides present as an external layer of the nanoparticles acting as semiconductors after excitation with light, overcoming the passivation of the material taking place in the dark.
publishDate 2014
dc.date.none.fl_str_mv 2014-02
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/11336/33023
Montesinos, Victor Nahuel; Quici, Natalia; Litter, Marta Irene; Visible light enhanced Cr(VI) removal from aqueous solution by nanoparticulated zerovalent iron; Elsevier; Catalysis Communications; 46; 2-2014; 57-60
1566-7367
CONICET Digital
CONICET
url http://hdl.handle.net/11336/33023
identifier_str_mv Montesinos, Victor Nahuel; Quici, Natalia; Litter, Marta Irene; Visible light enhanced Cr(VI) removal from aqueous solution by nanoparticulated zerovalent iron; Elsevier; Catalysis Communications; 46; 2-2014; 57-60
1566-7367
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1566736713004536
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.catcom.2013.11.024
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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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