Low-frequency ultrasound induces oxygen vacancies formation and visible light absorption in TiO 2 P-25 nanoparticles

Autores
Osorio Vargas, Paula; Pulgarin, Cesar; Sienkiewicz, Andrzej; Pizzio, Luis Rene; Blanco, Mirta Noemi; Torres Palma, Ricardo Antonio; Pétrier, Christian; Rengifo Herrera, Julian Andres
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Low-frequency ultrasound (LFUS) irradiation induces morphological, optical and surface changes in the commercial nano-TiO 2-based photocatalyst, Evonik-Degussa P-25. Low-temperature electron spin resonance (ESR) measurements performed on this material provided the first experimental evidence for the formation of oxygen vacancies (V o), which were also found responsible for the visible-light absorption. The V o surface defects might result from high-speed inter-particle collisions and shock waves generated by LFUS sonication impacting the TiO 2 particles. This is in contrast to a number of well-established technologies, where the formation of oxygen vacancies on the TiO 2 surface often requires harsh technological conditions and complicated procedures, such as annealing at high temperatures, radio-frequency-induced plasma or ion sputtering. Thus, this study reports for the first time the preparation of visible-light responsive TiO 2-based photocatalysts by using a simple LFUS-based approach to induce oxygen vacancies at the nano-TiO 2 surface. These findings might open new avenues for synthesis of novel nano-TiO 2-based photocatalysts capable of destroying water or airborne pollutants and microorganisms under visible light illumination.
Fil: Osorio Vargas, Paula. Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Pulgarin, Cesar. Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Sienkiewicz, Andrzej. Ecole Polytechnique Federale de Lausanne; Suiza
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 ; 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 ; Argentina
Fil: Torres Palma, Ricardo Antonio. Universidad de Antioquia; Colombia
Fil: Pétrier, Christian. Universite Grenoble Alpes; Francia
Fil: Rengifo Herrera, Julian Andres. Universidad Nacional de La Plata; Argentina
Materia
Low-Frequency Ultrasound
Oxygen Vacancies
Visible-Light Responsive Tio 2
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:11336/36569
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/36569
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Low-frequency ultrasound induces oxygen vacancies formation and visible light absorption in TiO 2 P-25 nanoparticlesOsorio Vargas, PaulaPulgarin, CesarSienkiewicz, AndrzejPizzio, Luis ReneBlanco, Mirta NoemiTorres Palma, Ricardo AntonioPétrier, ChristianRengifo Herrera, Julian AndresLow-Frequency UltrasoundOxygen VacanciesVisible-Light Responsive Tio 2https://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Low-frequency ultrasound (LFUS) irradiation induces morphological, optical and surface changes in the commercial nano-TiO 2-based photocatalyst, Evonik-Degussa P-25. Low-temperature electron spin resonance (ESR) measurements performed on this material provided the first experimental evidence for the formation of oxygen vacancies (V o), which were also found responsible for the visible-light absorption. The V o surface defects might result from high-speed inter-particle collisions and shock waves generated by LFUS sonication impacting the TiO 2 particles. This is in contrast to a number of well-established technologies, where the formation of oxygen vacancies on the TiO 2 surface often requires harsh technological conditions and complicated procedures, such as annealing at high temperatures, radio-frequency-induced plasma or ion sputtering. Thus, this study reports for the first time the preparation of visible-light responsive TiO 2-based photocatalysts by using a simple LFUS-based approach to induce oxygen vacancies at the nano-TiO 2 surface. These findings might open new avenues for synthesis of novel nano-TiO 2-based photocatalysts capable of destroying water or airborne pollutants and microorganisms under visible light illumination.Fil: Osorio Vargas, Paula. Ecole Polytechnique Federale de Lausanne; SuizaFil: Pulgarin, Cesar. Ecole Polytechnique Federale de Lausanne; SuizaFil: Sienkiewicz, Andrzej. Ecole Polytechnique Federale de Lausanne; SuizaFil: Pizzio, Luis Rene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. 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 ; ArgentinaFil: Torres Palma, Ricardo Antonio. Universidad de Antioquia; ColombiaFil: Pétrier, Christian. Universite Grenoble Alpes; FranciaFil: Rengifo Herrera, Julian Andres. Universidad Nacional de La Plata; ArgentinaElsevier2012-05info: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/11336/36569Osorio Vargas, Paula; Pulgarin, Cesar; Sienkiewicz, Andrzej; Pizzio, Luis Rene; Blanco, Mirta Noemi; et al.; Low-frequency ultrasound induces oxygen vacancies formation and visible light absorption in TiO 2 P-25 nanoparticles; Elsevier; Ultrasonics Sonochemistry; 19; 3; 5-2012; 383-3861350-4177CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.ultsonch.2011.11.013info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1350417711002355info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:11:51Zoai:ri.conicet.gov.ar:11336/36569instacron: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 10:11:51.666CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Low-frequency ultrasound induces oxygen vacancies formation and visible light absorption in TiO 2 P-25 nanoparticles
title Low-frequency ultrasound induces oxygen vacancies formation and visible light absorption in TiO 2 P-25 nanoparticles
spellingShingle Low-frequency ultrasound induces oxygen vacancies formation and visible light absorption in TiO 2 P-25 nanoparticles
Osorio Vargas, Paula
Low-Frequency Ultrasound
Oxygen Vacancies
Visible-Light Responsive Tio 2
title_short Low-frequency ultrasound induces oxygen vacancies formation and visible light absorption in TiO 2 P-25 nanoparticles
title_full Low-frequency ultrasound induces oxygen vacancies formation and visible light absorption in TiO 2 P-25 nanoparticles
title_fullStr Low-frequency ultrasound induces oxygen vacancies formation and visible light absorption in TiO 2 P-25 nanoparticles
title_full_unstemmed Low-frequency ultrasound induces oxygen vacancies formation and visible light absorption in TiO 2 P-25 nanoparticles
title_sort Low-frequency ultrasound induces oxygen vacancies formation and visible light absorption in TiO 2 P-25 nanoparticles
dc.creator.none.fl_str_mv Osorio Vargas, Paula
Pulgarin, Cesar
Sienkiewicz, Andrzej
Pizzio, Luis Rene
Blanco, Mirta Noemi
Torres Palma, Ricardo Antonio
Pétrier, Christian
Rengifo Herrera, Julian Andres
author Osorio Vargas, Paula
author_facet Osorio Vargas, Paula
Pulgarin, Cesar
Sienkiewicz, Andrzej
Pizzio, Luis Rene
Blanco, Mirta Noemi
Torres Palma, Ricardo Antonio
Pétrier, Christian
Rengifo Herrera, Julian Andres
author_role author
author2 Pulgarin, Cesar
Sienkiewicz, Andrzej
Pizzio, Luis Rene
Blanco, Mirta Noemi
Torres Palma, Ricardo Antonio
Pétrier, Christian
Rengifo Herrera, Julian Andres
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Low-Frequency Ultrasound
Oxygen Vacancies
Visible-Light Responsive Tio 2
topic Low-Frequency Ultrasound
Oxygen Vacancies
Visible-Light Responsive Tio 2
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Low-frequency ultrasound (LFUS) irradiation induces morphological, optical and surface changes in the commercial nano-TiO 2-based photocatalyst, Evonik-Degussa P-25. Low-temperature electron spin resonance (ESR) measurements performed on this material provided the first experimental evidence for the formation of oxygen vacancies (V o), which were also found responsible for the visible-light absorption. The V o surface defects might result from high-speed inter-particle collisions and shock waves generated by LFUS sonication impacting the TiO 2 particles. This is in contrast to a number of well-established technologies, where the formation of oxygen vacancies on the TiO 2 surface often requires harsh technological conditions and complicated procedures, such as annealing at high temperatures, radio-frequency-induced plasma or ion sputtering. Thus, this study reports for the first time the preparation of visible-light responsive TiO 2-based photocatalysts by using a simple LFUS-based approach to induce oxygen vacancies at the nano-TiO 2 surface. These findings might open new avenues for synthesis of novel nano-TiO 2-based photocatalysts capable of destroying water or airborne pollutants and microorganisms under visible light illumination.
Fil: Osorio Vargas, Paula. Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Pulgarin, Cesar. Ecole Polytechnique Federale de Lausanne; Suiza
Fil: Sienkiewicz, Andrzej. Ecole Polytechnique Federale de Lausanne; Suiza
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 ; 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 ; Argentina
Fil: Torres Palma, Ricardo Antonio. Universidad de Antioquia; Colombia
Fil: Pétrier, Christian. Universite Grenoble Alpes; Francia
Fil: Rengifo Herrera, Julian Andres. Universidad Nacional de La Plata; Argentina
description Low-frequency ultrasound (LFUS) irradiation induces morphological, optical and surface changes in the commercial nano-TiO 2-based photocatalyst, Evonik-Degussa P-25. Low-temperature electron spin resonance (ESR) measurements performed on this material provided the first experimental evidence for the formation of oxygen vacancies (V o), which were also found responsible for the visible-light absorption. The V o surface defects might result from high-speed inter-particle collisions and shock waves generated by LFUS sonication impacting the TiO 2 particles. This is in contrast to a number of well-established technologies, where the formation of oxygen vacancies on the TiO 2 surface often requires harsh technological conditions and complicated procedures, such as annealing at high temperatures, radio-frequency-induced plasma or ion sputtering. Thus, this study reports for the first time the preparation of visible-light responsive TiO 2-based photocatalysts by using a simple LFUS-based approach to induce oxygen vacancies at the nano-TiO 2 surface. These findings might open new avenues for synthesis of novel nano-TiO 2-based photocatalysts capable of destroying water or airborne pollutants and microorganisms under visible light illumination.
publishDate 2012
dc.date.none.fl_str_mv 2012-05
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/11336/36569
Osorio Vargas, Paula; Pulgarin, Cesar; Sienkiewicz, Andrzej; Pizzio, Luis Rene; Blanco, Mirta Noemi; et al.; Low-frequency ultrasound induces oxygen vacancies formation and visible light absorption in TiO 2 P-25 nanoparticles; Elsevier; Ultrasonics Sonochemistry; 19; 3; 5-2012; 383-386
1350-4177
CONICET Digital
CONICET
url http://hdl.handle.net/11336/36569
identifier_str_mv Osorio Vargas, Paula; Pulgarin, Cesar; Sienkiewicz, Andrzej; Pizzio, Luis Rene; Blanco, Mirta Noemi; et al.; Low-frequency ultrasound induces oxygen vacancies formation and visible light absorption in TiO 2 P-25 nanoparticles; Elsevier; Ultrasonics Sonochemistry; 19; 3; 5-2012; 383-386
1350-4177
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ultsonch.2011.11.013
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1350417711002355
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
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
_version_ 1842270173376020480
score 13.13397

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