Efficiency evaluation of different TiO 2 coatings on the photocatalytic inactivation of airborne bacterial spores

Autores
Zacarias, Silvia Mercedes; Satuf, María Lucila; Vaccari, Maria Celia; Alfano, Orlando Mario
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The performance of different TiO 2 coatings is compared for the photocatalytic inactivation of dry Bacillus subtilis spores dispersed on TiO 2 films under UV-A radiation. Three different TiO 2 coatings were assayed: Degussa P-25, sol-gel, and composite sol-gel/Degussa P-25. The influence of the increase in the number of TiO 2 layers was also studied. Furthermore, the amount of TiO 2 deposited on the borosilicate glass plates and the fraction of energy effectively absorbed by the catalytic films were determined. Spectral diffuse transmittance and reflectance measurements were performed using a spectroradiometer with an integrating-sphere attachment. The net-radiation method was then applied to evaluate the fraction of energy absorbed by the coatings. To objectively compare the performance of the catalytic films, two types of efficiencies were calculated: the photonic efficiency and the quantum efficiency of inactivation. The highest quantum efficiency was obtained with the TiO 2 Degussa P-25 coating with two layers. © 2012 American Chemical Society.
Fil: Zacarias, Silvia Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Satuf, María Lucila. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Vaccari, Maria Celia. Universidad Nacional del Litoral; Argentina
Fil: Alfano, Orlando Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Materia
PHOTOCATALITYC INACTIVATION
UV-A
TIO2 COATING
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:11336/150153
Acceder
id CONICETDig_291ee4a8f4c3eff7095e23d3a5bacef8
oai_identifier_str oai:ri.conicet.gov.ar:11336/150153
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Efficiency evaluation of different TiO 2 coatings on the photocatalytic inactivation of airborne bacterial sporesZacarias, Silvia MercedesSatuf, María LucilaVaccari, Maria CeliaAlfano, Orlando MarioPHOTOCATALITYC INACTIVATIONUV-ATIO2 COATINGhttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2The performance of different TiO 2 coatings is compared for the photocatalytic inactivation of dry Bacillus subtilis spores dispersed on TiO 2 films under UV-A radiation. Three different TiO 2 coatings were assayed: Degussa P-25, sol-gel, and composite sol-gel/Degussa P-25. The influence of the increase in the number of TiO 2 layers was also studied. Furthermore, the amount of TiO 2 deposited on the borosilicate glass plates and the fraction of energy effectively absorbed by the catalytic films were determined. Spectral diffuse transmittance and reflectance measurements were performed using a spectroradiometer with an integrating-sphere attachment. The net-radiation method was then applied to evaluate the fraction of energy absorbed by the coatings. To objectively compare the performance of the catalytic films, two types of efficiencies were calculated: the photonic efficiency and the quantum efficiency of inactivation. The highest quantum efficiency was obtained with the TiO 2 Degussa P-25 coating with two layers. © 2012 American Chemical Society.Fil: Zacarias, Silvia Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Satuf, María Lucila. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Vaccari, Maria Celia. Universidad Nacional del Litoral; ArgentinaFil: Alfano, Orlando Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaAmerican Chemical Society2012-10info: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/11336/150153Zacarias, Silvia Mercedes; Satuf, María Lucila; Vaccari, Maria Celia; Alfano, Orlando Mario; Efficiency evaluation of different TiO 2 coatings on the photocatalytic inactivation of airborne bacterial spores; American Chemical Society; Industrial & Engineering Chemical Research; 51; 42; 10-2012; 13599-136080888-5885CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://pubs.acs.org/doi/abs/10.1021/ie3009956info:eu-repo/semantics/altIdentifier/doi/10.1021/ie3009956info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:11:55Zoai:ri.conicet.gov.ar:11336/150153instacron: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 10:11:55.93CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Efficiency evaluation of different TiO 2 coatings on the photocatalytic inactivation of airborne bacterial spores
title Efficiency evaluation of different TiO 2 coatings on the photocatalytic inactivation of airborne bacterial spores
spellingShingle Efficiency evaluation of different TiO 2 coatings on the photocatalytic inactivation of airborne bacterial spores
Zacarias, Silvia Mercedes
PHOTOCATALITYC INACTIVATION
UV-A
TIO2 COATING
title_short Efficiency evaluation of different TiO 2 coatings on the photocatalytic inactivation of airborne bacterial spores
title_full Efficiency evaluation of different TiO 2 coatings on the photocatalytic inactivation of airborne bacterial spores
title_fullStr Efficiency evaluation of different TiO 2 coatings on the photocatalytic inactivation of airborne bacterial spores
title_full_unstemmed Efficiency evaluation of different TiO 2 coatings on the photocatalytic inactivation of airborne bacterial spores
title_sort Efficiency evaluation of different TiO 2 coatings on the photocatalytic inactivation of airborne bacterial spores
dc.creator.none.fl_str_mv Zacarias, Silvia Mercedes
Satuf, María Lucila
Vaccari, Maria Celia
Alfano, Orlando Mario
author Zacarias, Silvia Mercedes
author_facet Zacarias, Silvia Mercedes
Satuf, María Lucila
Vaccari, Maria Celia
Alfano, Orlando Mario
author_role author
author2 Satuf, María Lucila
Vaccari, Maria Celia
Alfano, Orlando Mario
author2_role author
author
author
dc.subject.none.fl_str_mv PHOTOCATALITYC INACTIVATION
UV-A
TIO2 COATING
topic PHOTOCATALITYC INACTIVATION
UV-A
TIO2 COATING
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The performance of different TiO 2 coatings is compared for the photocatalytic inactivation of dry Bacillus subtilis spores dispersed on TiO 2 films under UV-A radiation. Three different TiO 2 coatings were assayed: Degussa P-25, sol-gel, and composite sol-gel/Degussa P-25. The influence of the increase in the number of TiO 2 layers was also studied. Furthermore, the amount of TiO 2 deposited on the borosilicate glass plates and the fraction of energy effectively absorbed by the catalytic films were determined. Spectral diffuse transmittance and reflectance measurements were performed using a spectroradiometer with an integrating-sphere attachment. The net-radiation method was then applied to evaluate the fraction of energy absorbed by the coatings. To objectively compare the performance of the catalytic films, two types of efficiencies were calculated: the photonic efficiency and the quantum efficiency of inactivation. The highest quantum efficiency was obtained with the TiO 2 Degussa P-25 coating with two layers. © 2012 American Chemical Society.
Fil: Zacarias, Silvia Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Satuf, María Lucila. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
Fil: Vaccari, Maria Celia. Universidad Nacional del Litoral; Argentina
Fil: Alfano, Orlando Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
description The performance of different TiO 2 coatings is compared for the photocatalytic inactivation of dry Bacillus subtilis spores dispersed on TiO 2 films under UV-A radiation. Three different TiO 2 coatings were assayed: Degussa P-25, sol-gel, and composite sol-gel/Degussa P-25. The influence of the increase in the number of TiO 2 layers was also studied. Furthermore, the amount of TiO 2 deposited on the borosilicate glass plates and the fraction of energy effectively absorbed by the catalytic films were determined. Spectral diffuse transmittance and reflectance measurements were performed using a spectroradiometer with an integrating-sphere attachment. The net-radiation method was then applied to evaluate the fraction of energy absorbed by the coatings. To objectively compare the performance of the catalytic films, two types of efficiencies were calculated: the photonic efficiency and the quantum efficiency of inactivation. The highest quantum efficiency was obtained with the TiO 2 Degussa P-25 coating with two layers. © 2012 American Chemical Society.
publishDate 2012
dc.date.none.fl_str_mv 2012-10
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/11336/150153
Zacarias, Silvia Mercedes; Satuf, María Lucila; Vaccari, Maria Celia; Alfano, Orlando Mario; Efficiency evaluation of different TiO 2 coatings on the photocatalytic inactivation of airborne bacterial spores; American Chemical Society; Industrial & Engineering Chemical Research; 51; 42; 10-2012; 13599-13608
0888-5885
CONICET Digital
CONICET
url http://hdl.handle.net/11336/150153
identifier_str_mv Zacarias, Silvia Mercedes; Satuf, María Lucila; Vaccari, Maria Celia; Alfano, Orlando Mario; Efficiency evaluation of different TiO 2 coatings on the photocatalytic inactivation of airborne bacterial spores; American Chemical Society; Industrial & Engineering Chemical Research; 51; 42; 10-2012; 13599-13608
0888-5885
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://pubs.acs.org/doi/abs/10.1021/ie3009956
info:eu-repo/semantics/altIdentifier/doi/10.1021/ie3009956
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 American Chemical Society
publisher.none.fl_str_mv American Chemical Society
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_ 1842270177107902464
score 13.13397

Publicaciones similares