Visible-light-absorbing mesoporous TiO2 modified with tungstosilicic acid as photocatalyst in the photodegradation of 4-chlorophenol
- Autores
- Rengifo Herrera, Julian Andres; Frenzel, Romina Alejandra; Blanco, Mirta Noemi; Pizzio, Luis Rene
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Visible-light-absorbing materials based on TiO2 modified with tungstosilicic acid (TSA; H4SiW12O40) were prepared using titanium isopropoxide as precursor and urea as a low-cost pore-forming agent. X-ray diffraction (XRD) measurements show evidence about the presence of anatase TiO2 in all samples and shifting of the anatase–rutile transition temperature toward temperatures higher than 600 °C. The FT-IR and FT-Raman studies showed that the main heteropolyoxometallate species present in the composites annealed up to 500 °C is the [SiW12O40]4− anion, which exhibited a strong interaction with TiO2 surface probably due to the formation of TSA–TiO2 complexes that should be responsible for its visible light absorption. The photocatalytic activity of these materials was tested using 4-chlorophenol as model pollutant. Results revealed that photocatalytic activity mainly depends on the TSA amount and the annealing temperature. The amount of degraded 4-CP increased with the increment of TSA content, with the one calcined at 600 °C being more active. Finally, it was found that these photocatalysts can be reused at least three times without an important decrease in the degradation and mineralization degrees.
Fil: Rengifo Herrera, Julian Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Frenzel, Romina Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Blanco, Mirta Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Pizzio, Luis Rene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina - Materia
-
Mesoporous Titania
Tungstosilicic Acid
4-Chlorophenol
Photocatalytic Degradation - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/24971
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Visible-light-absorbing mesoporous TiO2 modified with tungstosilicic acid as photocatalyst in the photodegradation of 4-chlorophenolRengifo Herrera, Julian AndresFrenzel, Romina AlejandraBlanco, Mirta NoemiPizzio, Luis ReneMesoporous TitaniaTungstosilicic Acid4-ChlorophenolPhotocatalytic Degradationhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Visible-light-absorbing materials based on TiO2 modified with tungstosilicic acid (TSA; H4SiW12O40) were prepared using titanium isopropoxide as precursor and urea as a low-cost pore-forming agent. X-ray diffraction (XRD) measurements show evidence about the presence of anatase TiO2 in all samples and shifting of the anatase–rutile transition temperature toward temperatures higher than 600 °C. The FT-IR and FT-Raman studies showed that the main heteropolyoxometallate species present in the composites annealed up to 500 °C is the [SiW12O40]4− anion, which exhibited a strong interaction with TiO2 surface probably due to the formation of TSA–TiO2 complexes that should be responsible for its visible light absorption. The photocatalytic activity of these materials was tested using 4-chlorophenol as model pollutant. Results revealed that photocatalytic activity mainly depends on the TSA amount and the annealing temperature. The amount of degraded 4-CP increased with the increment of TSA content, with the one calcined at 600 °C being more active. Finally, it was found that these photocatalysts can be reused at least three times without an important decrease in the degradation and mineralization degrees.Fil: Rengifo Herrera, Julian Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: Frenzel, Romina Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: Blanco, Mirta Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaFil: Pizzio, Luis Rene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; ArgentinaElsevier Science Sa2014-06-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/24971Rengifo Herrera, Julian Andres; Frenzel, Romina Alejandra; Blanco, Mirta Noemi; Pizzio, Luis Rene; Visible-light-absorbing mesoporous TiO2 modified with tungstosilicic acid as photocatalyst in the photodegradation of 4-chlorophenol; Elsevier Science Sa; Journal of Photochemistry and Photobiology A: Chemistry; 289; 2-6-2014; 22-301010-6030CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1010603014002342info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jphotochem.2014.05.014info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:03:03Zoai:ri.conicet.gov.ar:11336/24971instacron: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 10:03:03.596CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Visible-light-absorbing mesoporous TiO2 modified with tungstosilicic acid as photocatalyst in the photodegradation of 4-chlorophenol |
title |
Visible-light-absorbing mesoporous TiO2 modified with tungstosilicic acid as photocatalyst in the photodegradation of 4-chlorophenol |
spellingShingle |
Visible-light-absorbing mesoporous TiO2 modified with tungstosilicic acid as photocatalyst in the photodegradation of 4-chlorophenol Rengifo Herrera, Julian Andres Mesoporous Titania Tungstosilicic Acid 4-Chlorophenol Photocatalytic Degradation |
title_short |
Visible-light-absorbing mesoporous TiO2 modified with tungstosilicic acid as photocatalyst in the photodegradation of 4-chlorophenol |
title_full |
Visible-light-absorbing mesoporous TiO2 modified with tungstosilicic acid as photocatalyst in the photodegradation of 4-chlorophenol |
title_fullStr |
Visible-light-absorbing mesoporous TiO2 modified with tungstosilicic acid as photocatalyst in the photodegradation of 4-chlorophenol |
title_full_unstemmed |
Visible-light-absorbing mesoporous TiO2 modified with tungstosilicic acid as photocatalyst in the photodegradation of 4-chlorophenol |
title_sort |
Visible-light-absorbing mesoporous TiO2 modified with tungstosilicic acid as photocatalyst in the photodegradation of 4-chlorophenol |
dc.creator.none.fl_str_mv |
Rengifo Herrera, Julian Andres Frenzel, Romina Alejandra Blanco, Mirta Noemi Pizzio, Luis Rene |
author |
Rengifo Herrera, Julian Andres |
author_facet |
Rengifo Herrera, Julian Andres Frenzel, Romina Alejandra Blanco, Mirta Noemi Pizzio, Luis Rene |
author_role |
author |
author2 |
Frenzel, Romina Alejandra Blanco, Mirta Noemi Pizzio, Luis Rene |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
Mesoporous Titania Tungstosilicic Acid 4-Chlorophenol Photocatalytic Degradation |
topic |
Mesoporous Titania Tungstosilicic Acid 4-Chlorophenol Photocatalytic Degradation |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.4 https://purl.org/becyt/ford/2 |
dc.description.none.fl_txt_mv |
Visible-light-absorbing materials based on TiO2 modified with tungstosilicic acid (TSA; H4SiW12O40) were prepared using titanium isopropoxide as precursor and urea as a low-cost pore-forming agent. X-ray diffraction (XRD) measurements show evidence about the presence of anatase TiO2 in all samples and shifting of the anatase–rutile transition temperature toward temperatures higher than 600 °C. The FT-IR and FT-Raman studies showed that the main heteropolyoxometallate species present in the composites annealed up to 500 °C is the [SiW12O40]4− anion, which exhibited a strong interaction with TiO2 surface probably due to the formation of TSA–TiO2 complexes that should be responsible for its visible light absorption. The photocatalytic activity of these materials was tested using 4-chlorophenol as model pollutant. Results revealed that photocatalytic activity mainly depends on the TSA amount and the annealing temperature. The amount of degraded 4-CP increased with the increment of TSA content, with the one calcined at 600 °C being more active. Finally, it was found that these photocatalysts can be reused at least three times without an important decrease in the degradation and mineralization degrees. Fil: Rengifo Herrera, Julian Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina Fil: Frenzel, Romina Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina Fil: Blanco, Mirta Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina Fil: Pizzio, Luis Rene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de la Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina |
description |
Visible-light-absorbing materials based on TiO2 modified with tungstosilicic acid (TSA; H4SiW12O40) were prepared using titanium isopropoxide as precursor and urea as a low-cost pore-forming agent. X-ray diffraction (XRD) measurements show evidence about the presence of anatase TiO2 in all samples and shifting of the anatase–rutile transition temperature toward temperatures higher than 600 °C. The FT-IR and FT-Raman studies showed that the main heteropolyoxometallate species present in the composites annealed up to 500 °C is the [SiW12O40]4− anion, which exhibited a strong interaction with TiO2 surface probably due to the formation of TSA–TiO2 complexes that should be responsible for its visible light absorption. The photocatalytic activity of these materials was tested using 4-chlorophenol as model pollutant. Results revealed that photocatalytic activity mainly depends on the TSA amount and the annealing temperature. The amount of degraded 4-CP increased with the increment of TSA content, with the one calcined at 600 °C being more active. Finally, it was found that these photocatalysts can be reused at least three times without an important decrease in the degradation and mineralization degrees. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-06-02 |
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/11336/24971 Rengifo Herrera, Julian Andres; Frenzel, Romina Alejandra; Blanco, Mirta Noemi; Pizzio, Luis Rene; Visible-light-absorbing mesoporous TiO2 modified with tungstosilicic acid as photocatalyst in the photodegradation of 4-chlorophenol; Elsevier Science Sa; Journal of Photochemistry and Photobiology A: Chemistry; 289; 2-6-2014; 22-30 1010-6030 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/24971 |
identifier_str_mv |
Rengifo Herrera, Julian Andres; Frenzel, Romina Alejandra; Blanco, Mirta Noemi; Pizzio, Luis Rene; Visible-light-absorbing mesoporous TiO2 modified with tungstosilicic acid as photocatalyst in the photodegradation of 4-chlorophenol; Elsevier Science Sa; Journal of Photochemistry and Photobiology A: Chemistry; 289; 2-6-2014; 22-30 1010-6030 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/S1010603014002342 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jphotochem.2014.05.014 |
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 application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science Sa |
publisher.none.fl_str_mv |
Elsevier Science Sa |
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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1842269780489273344 |
score |
13.13397 |