Selection of TiO2-support: UV-transparent alternatives and long-term use limitations for H2S removal

Autores
Portela, Raquel; Sánchez, Benigno; Coronado, Juan M.; Candal, Roberto Jorge; Suárez, Silvia Inés
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Supported-TiO2 is commonly used for the photocatalytic treatment of gas streams. Nevertheless, selection of the best support is not a trivialtask. Cheap, lightweight and easily shaped polymeric materials which are transparent in the TiO2 activation range (poly(ethylene terephthalate) andcellulose acetate) were used as supports, as an alternative to borosilicate glass or opaque monoliths. The supports were coated with TiO2 solscontaining anatase particles. Different treatments were applied to the sols in order to improve particle crystallinity and wettability on plasticsurfaces. The resistance of the coated and uncoated supports against weathering and the photocatalytic activity for elimination of H2S frompolluted air were tested. Both supports were successfully coated with TiO2. PET supports displayed the higher photocatalytic activity, while TiO2caused the degradation of CA supports under UV illumination. The highest activity for H2S destruction was reached with 20% RH and increasingthe temperature of operation in the range of 33–50 8C resulted in higher conversion. Sulfate and SO2 were detected as byproducts, being thephotocatalytic activity reduced when sulfate accumulates on the surface. Different washing procedures for removing the sulfate from the supportedphotocatalysts were tested. A simple wash with distilled water was found to successfully recover most of the initial activity of the photocatalyst,although basic pH or higher temperatures accelerate sulfate removal.
Fil: Portela, Raquel. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas; España
Fil: Sánchez, Benigno. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas; España
Fil: Coronado, Juan M.. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas; España
Fil: Candal, Roberto Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Suárez, Silvia Inés. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas; España
Materia
Photocatalysis
H2S
PET
Supported-TiO2
Monolithic structures
Polymers
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:11336/103597
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/103597
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Selection of TiO2-support: UV-transparent alternatives and long-term use limitations for H2S removalPortela, RaquelSánchez, BenignoCoronado, Juan M.Candal, Roberto JorgeSuárez, Silvia InésPhotocatalysisH2SPETSupported-TiO2Monolithic structuresPolymershttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Supported-TiO2 is commonly used for the photocatalytic treatment of gas streams. Nevertheless, selection of the best support is not a trivialtask. Cheap, lightweight and easily shaped polymeric materials which are transparent in the TiO2 activation range (poly(ethylene terephthalate) andcellulose acetate) were used as supports, as an alternative to borosilicate glass or opaque monoliths. The supports were coated with TiO2 solscontaining anatase particles. Different treatments were applied to the sols in order to improve particle crystallinity and wettability on plasticsurfaces. The resistance of the coated and uncoated supports against weathering and the photocatalytic activity for elimination of H2S frompolluted air were tested. Both supports were successfully coated with TiO2. PET supports displayed the higher photocatalytic activity, while TiO2caused the degradation of CA supports under UV illumination. The highest activity for H2S destruction was reached with 20% RH and increasingthe temperature of operation in the range of 33–50 8C resulted in higher conversion. Sulfate and SO2 were detected as byproducts, being thephotocatalytic activity reduced when sulfate accumulates on the surface. Different washing procedures for removing the sulfate from the supportedphotocatalysts were tested. A simple wash with distilled water was found to successfully recover most of the initial activity of the photocatalyst,although basic pH or higher temperatures accelerate sulfate removal.Fil: Portela, Raquel. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas; EspañaFil: Sánchez, Benigno. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas; EspañaFil: Coronado, Juan M.. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas; EspañaFil: Candal, Roberto Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaFil: Suárez, Silvia Inés. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas; EspañaElsevier Science2007-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/103597Portela, Raquel; Sánchez, Benigno; Coronado, Juan M.; Candal, Roberto Jorge; Suárez, Silvia Inés; Selection of TiO2-support: UV-transparent alternatives and long-term use limitations for H2S removal; Elsevier Science; Catalysis Today; 129; 1-2; 11-2007; 223-2300920-5861CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0920586107005007info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cattod.2007.08.005info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:20:42Zoai:ri.conicet.gov.ar:11336/103597instacron: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:34982025-10-22 12:20:42.933CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Selection of TiO2-support: UV-transparent alternatives and long-term use limitations for H2S removal
title Selection of TiO2-support: UV-transparent alternatives and long-term use limitations for H2S removal
spellingShingle Selection of TiO2-support: UV-transparent alternatives and long-term use limitations for H2S removal
Portela, Raquel
Photocatalysis
H2S
PET
Supported-TiO2
Monolithic structures
Polymers
title_short Selection of TiO2-support: UV-transparent alternatives and long-term use limitations for H2S removal
title_full Selection of TiO2-support: UV-transparent alternatives and long-term use limitations for H2S removal
title_fullStr Selection of TiO2-support: UV-transparent alternatives and long-term use limitations for H2S removal
title_full_unstemmed Selection of TiO2-support: UV-transparent alternatives and long-term use limitations for H2S removal
title_sort Selection of TiO2-support: UV-transparent alternatives and long-term use limitations for H2S removal
dc.creator.none.fl_str_mv Portela, Raquel
Sánchez, Benigno
Coronado, Juan M.
Candal, Roberto Jorge
Suárez, Silvia Inés
author Portela, Raquel
author_facet Portela, Raquel
Sánchez, Benigno
Coronado, Juan M.
Candal, Roberto Jorge
Suárez, Silvia Inés
author_role author
author2 Sánchez, Benigno
Coronado, Juan M.
Candal, Roberto Jorge
Suárez, Silvia Inés
author2_role author
author
author
author
dc.subject.none.fl_str_mv Photocatalysis
H2S
PET
Supported-TiO2
Monolithic structures
Polymers
topic Photocatalysis
H2S
PET
Supported-TiO2
Monolithic structures
Polymers
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Supported-TiO2 is commonly used for the photocatalytic treatment of gas streams. Nevertheless, selection of the best support is not a trivialtask. Cheap, lightweight and easily shaped polymeric materials which are transparent in the TiO2 activation range (poly(ethylene terephthalate) andcellulose acetate) were used as supports, as an alternative to borosilicate glass or opaque monoliths. The supports were coated with TiO2 solscontaining anatase particles. Different treatments were applied to the sols in order to improve particle crystallinity and wettability on plasticsurfaces. The resistance of the coated and uncoated supports against weathering and the photocatalytic activity for elimination of H2S frompolluted air were tested. Both supports were successfully coated with TiO2. PET supports displayed the higher photocatalytic activity, while TiO2caused the degradation of CA supports under UV illumination. The highest activity for H2S destruction was reached with 20% RH and increasingthe temperature of operation in the range of 33–50 8C resulted in higher conversion. Sulfate and SO2 were detected as byproducts, being thephotocatalytic activity reduced when sulfate accumulates on the surface. Different washing procedures for removing the sulfate from the supportedphotocatalysts were tested. A simple wash with distilled water was found to successfully recover most of the initial activity of the photocatalyst,although basic pH or higher temperatures accelerate sulfate removal.
Fil: Portela, Raquel. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas; España
Fil: Sánchez, Benigno. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas; España
Fil: Coronado, Juan M.. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas; España
Fil: Candal, Roberto Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Fil: Suárez, Silvia Inés. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas; España
description Supported-TiO2 is commonly used for the photocatalytic treatment of gas streams. Nevertheless, selection of the best support is not a trivialtask. Cheap, lightweight and easily shaped polymeric materials which are transparent in the TiO2 activation range (poly(ethylene terephthalate) andcellulose acetate) were used as supports, as an alternative to borosilicate glass or opaque monoliths. The supports were coated with TiO2 solscontaining anatase particles. Different treatments were applied to the sols in order to improve particle crystallinity and wettability on plasticsurfaces. The resistance of the coated and uncoated supports against weathering and the photocatalytic activity for elimination of H2S frompolluted air were tested. Both supports were successfully coated with TiO2. PET supports displayed the higher photocatalytic activity, while TiO2caused the degradation of CA supports under UV illumination. The highest activity for H2S destruction was reached with 20% RH and increasingthe temperature of operation in the range of 33–50 8C resulted in higher conversion. Sulfate and SO2 were detected as byproducts, being thephotocatalytic activity reduced when sulfate accumulates on the surface. Different washing procedures for removing the sulfate from the supportedphotocatalysts were tested. A simple wash with distilled water was found to successfully recover most of the initial activity of the photocatalyst,although basic pH or higher temperatures accelerate sulfate removal.
publishDate 2007
dc.date.none.fl_str_mv 2007-11
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/11336/103597
Portela, Raquel; Sánchez, Benigno; Coronado, Juan M.; Candal, Roberto Jorge; Suárez, Silvia Inés; Selection of TiO2-support: UV-transparent alternatives and long-term use limitations for H2S removal; Elsevier Science; Catalysis Today; 129; 1-2; 11-2007; 223-230
0920-5861
CONICET Digital
CONICET
url http://hdl.handle.net/11336/103597
identifier_str_mv Portela, Raquel; Sánchez, Benigno; Coronado, Juan M.; Candal, Roberto Jorge; Suárez, Silvia Inés; Selection of TiO2-support: UV-transparent alternatives and long-term use limitations for H2S removal; Elsevier Science; Catalysis Today; 129; 1-2; 11-2007; 223-230
0920-5861
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0920586107005007
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cattod.2007.08.005
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
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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 12.982451

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