Morphological characterization and photocatalytic efficiency measurements of pure silica transparent open-cell sponges coated with TiO2

Autores
Löffler, Frank; Altermann, Fabian; Bucharsky, Ethel; Schell, Karl; Vera, Maria Laura; Traid, Hernán Darío; Dwojak, Anabela Natalia; Litter, Marta Irene
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Transparent glass sponges are a new class of materials that can potentially be used for effective light distribution in photocatalytic applications. In this work, transparent glass sponges are prepared by the polymer replica technique and coated with TiO2 to obtain a highly efficient photocatalytic material. Necessary conditions for obtaining transparent open-celled glass sponges are presented. The structure is characterized by employing light microscopy and scanning electron microscopy. In addition, µ-computer tomography (µ-CT) volume image analysis was performed that allows the calculation of geometrical parameters like pore size and specific surface area (SSA) of the structure, required for application of the new material. For photocatalytic application, the sponges have been coated with titanium dioxide (TiO2) by immersion in a suspension of TiO2 nanoparticles. The activity of the resulting coatings has been tested with the model reaction of transformation of Cr(VI) to Cr(III) in aqueous solutions in the presence of EDTA at pH 2. The reaction kinetics could be adjusted to a pseudo-first order reaction and the obtained rate constants have been employed to evaluate the photocatalytic activity. The activity of the sponges has been compared with that of samples of glass plates coated with TiO2; it has been found that the sponges exhibited a higher catalytic activity than the glass plates. The photocatalytic activity increased with the porosity of the sponges, and the optimum sample was determined based on its photocatalytic performance and its mechanical stability. The results are promissory for application in photoreactors for transformation of pollutants in water and air decontamination.
Fil: Löffler, Frank. Karlsruher Institut Für Technology.; Alemania
Fil: Altermann, Fabian. Karlsruher Institut Für Technology.; Alemania
Fil: Bucharsky, Ethel. Karlsruher Institut Für Technology.; Alemania
Fil: Schell, Karl. Karlsruher Institut Für Technology.; Alemania
Fil: Vera, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; Argentina
Fil: Traid, Hernán Darío. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; Argentina
Fil: Dwojak, Anabela Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; Argentina
Fil: Litter, Marta Irene. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental. - Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigación e Ingeniería Ambiental; Argentina
Materia
GLASS
HETEROGENEOUS PHOTOCATALYSIS
HEXAVALENT CHROMIUM
POROSITY
SURFACE
TIO2
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/110481
Acceder
id CONICETDig_8191f52d475d12d7ae31cb8ce9bcf370
oai_identifier_str oai:ri.conicet.gov.ar:11336/110481
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Morphological characterization and photocatalytic efficiency measurements of pure silica transparent open-cell sponges coated with TiO2Löffler, FrankAltermann, FabianBucharsky, EthelSchell, KarlVera, Maria LauraTraid, Hernán DaríoDwojak, Anabela NataliaLitter, Marta IreneGLASSHETEROGENEOUS PHOTOCATALYSISHEXAVALENT CHROMIUMPOROSITYSURFACETIO2https://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2Transparent glass sponges are a new class of materials that can potentially be used for effective light distribution in photocatalytic applications. In this work, transparent glass sponges are prepared by the polymer replica technique and coated with TiO2 to obtain a highly efficient photocatalytic material. Necessary conditions for obtaining transparent open-celled glass sponges are presented. The structure is characterized by employing light microscopy and scanning electron microscopy. In addition, µ-computer tomography (µ-CT) volume image analysis was performed that allows the calculation of geometrical parameters like pore size and specific surface area (SSA) of the structure, required for application of the new material. For photocatalytic application, the sponges have been coated with titanium dioxide (TiO2) by immersion in a suspension of TiO2 nanoparticles. The activity of the resulting coatings has been tested with the model reaction of transformation of Cr(VI) to Cr(III) in aqueous solutions in the presence of EDTA at pH 2. The reaction kinetics could be adjusted to a pseudo-first order reaction and the obtained rate constants have been employed to evaluate the photocatalytic activity. The activity of the sponges has been compared with that of samples of glass plates coated with TiO2; it has been found that the sponges exhibited a higher catalytic activity than the glass plates. The photocatalytic activity increased with the porosity of the sponges, and the optimum sample was determined based on its photocatalytic performance and its mechanical stability. The results are promissory for application in photoreactors for transformation of pollutants in water and air decontamination.Fil: Löffler, Frank. Karlsruher Institut Für Technology.; AlemaniaFil: Altermann, Fabian. Karlsruher Institut Für Technology.; AlemaniaFil: Bucharsky, Ethel. Karlsruher Institut Für Technology.; AlemaniaFil: Schell, Karl. Karlsruher Institut Für Technology.; AlemaniaFil: Vera, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; ArgentinaFil: Traid, Hernán Darío. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; ArgentinaFil: Dwojak, Anabela Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; ArgentinaFil: Litter, Marta Irene. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental. - Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigación e Ingeniería Ambiental; ArgentinaWiley Blackwell Publishing, Inc2020-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/110481Löffler, Frank; Altermann, Fabian; Bucharsky, Ethel; Schell, Karl; Vera, Maria Laura; et al.; Morphological characterization and photocatalytic efficiency measurements of pure silica transparent open-cell sponges coated with TiO2; Wiley Blackwell Publishing, Inc; International Journal Of Applied Ceramic Technology; 17; 4; 3-2020; 1930-19391744-7402CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/ijac.13504info:eu-repo/semantics/altIdentifier/doi/10.1111/ijac.13504info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:11:23Zoai:ri.conicet.gov.ar:11336/110481instacron: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 10:11:23.631CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Morphological characterization and photocatalytic efficiency measurements of pure silica transparent open-cell sponges coated with TiO2
title Morphological characterization and photocatalytic efficiency measurements of pure silica transparent open-cell sponges coated with TiO2
spellingShingle Morphological characterization and photocatalytic efficiency measurements of pure silica transparent open-cell sponges coated with TiO2
Löffler, Frank
GLASS
HETEROGENEOUS PHOTOCATALYSIS
HEXAVALENT CHROMIUM
POROSITY
SURFACE
TIO2
title_short Morphological characterization and photocatalytic efficiency measurements of pure silica transparent open-cell sponges coated with TiO2
title_full Morphological characterization and photocatalytic efficiency measurements of pure silica transparent open-cell sponges coated with TiO2
title_fullStr Morphological characterization and photocatalytic efficiency measurements of pure silica transparent open-cell sponges coated with TiO2
title_full_unstemmed Morphological characterization and photocatalytic efficiency measurements of pure silica transparent open-cell sponges coated with TiO2
title_sort Morphological characterization and photocatalytic efficiency measurements of pure silica transparent open-cell sponges coated with TiO2
dc.creator.none.fl_str_mv Löffler, Frank
Altermann, Fabian
Bucharsky, Ethel
Schell, Karl
Vera, Maria Laura
Traid, Hernán Darío
Dwojak, Anabela Natalia
Litter, Marta Irene
author Löffler, Frank
author_facet Löffler, Frank
Altermann, Fabian
Bucharsky, Ethel
Schell, Karl
Vera, Maria Laura
Traid, Hernán Darío
Dwojak, Anabela Natalia
Litter, Marta Irene
author_role author
author2 Altermann, Fabian
Bucharsky, Ethel
Schell, Karl
Vera, Maria Laura
Traid, Hernán Darío
Dwojak, Anabela Natalia
Litter, Marta Irene
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv GLASS
HETEROGENEOUS PHOTOCATALYSIS
HEXAVALENT CHROMIUM
POROSITY
SURFACE
TIO2
topic GLASS
HETEROGENEOUS PHOTOCATALYSIS
HEXAVALENT CHROMIUM
POROSITY
SURFACE
TIO2
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Transparent glass sponges are a new class of materials that can potentially be used for effective light distribution in photocatalytic applications. In this work, transparent glass sponges are prepared by the polymer replica technique and coated with TiO2 to obtain a highly efficient photocatalytic material. Necessary conditions for obtaining transparent open-celled glass sponges are presented. The structure is characterized by employing light microscopy and scanning electron microscopy. In addition, µ-computer tomography (µ-CT) volume image analysis was performed that allows the calculation of geometrical parameters like pore size and specific surface area (SSA) of the structure, required for application of the new material. For photocatalytic application, the sponges have been coated with titanium dioxide (TiO2) by immersion in a suspension of TiO2 nanoparticles. The activity of the resulting coatings has been tested with the model reaction of transformation of Cr(VI) to Cr(III) in aqueous solutions in the presence of EDTA at pH 2. The reaction kinetics could be adjusted to a pseudo-first order reaction and the obtained rate constants have been employed to evaluate the photocatalytic activity. The activity of the sponges has been compared with that of samples of glass plates coated with TiO2; it has been found that the sponges exhibited a higher catalytic activity than the glass plates. The photocatalytic activity increased with the porosity of the sponges, and the optimum sample was determined based on its photocatalytic performance and its mechanical stability. The results are promissory for application in photoreactors for transformation of pollutants in water and air decontamination.
Fil: Löffler, Frank. Karlsruher Institut Für Technology.; Alemania
Fil: Altermann, Fabian. Karlsruher Institut Für Technology.; Alemania
Fil: Bucharsky, Ethel. Karlsruher Institut Für Technology.; Alemania
Fil: Schell, Karl. Karlsruher Institut Für Technology.; Alemania
Fil: Vera, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; Argentina
Fil: Traid, Hernán Darío. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; Argentina
Fil: Dwojak, Anabela Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; Argentina
Fil: Litter, Marta Irene. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental. - Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigación e Ingeniería Ambiental; Argentina
description Transparent glass sponges are a new class of materials that can potentially be used for effective light distribution in photocatalytic applications. In this work, transparent glass sponges are prepared by the polymer replica technique and coated with TiO2 to obtain a highly efficient photocatalytic material. Necessary conditions for obtaining transparent open-celled glass sponges are presented. The structure is characterized by employing light microscopy and scanning electron microscopy. In addition, µ-computer tomography (µ-CT) volume image analysis was performed that allows the calculation of geometrical parameters like pore size and specific surface area (SSA) of the structure, required for application of the new material. For photocatalytic application, the sponges have been coated with titanium dioxide (TiO2) by immersion in a suspension of TiO2 nanoparticles. The activity of the resulting coatings has been tested with the model reaction of transformation of Cr(VI) to Cr(III) in aqueous solutions in the presence of EDTA at pH 2. The reaction kinetics could be adjusted to a pseudo-first order reaction and the obtained rate constants have been employed to evaluate the photocatalytic activity. The activity of the sponges has been compared with that of samples of glass plates coated with TiO2; it has been found that the sponges exhibited a higher catalytic activity than the glass plates. The photocatalytic activity increased with the porosity of the sponges, and the optimum sample was determined based on its photocatalytic performance and its mechanical stability. The results are promissory for application in photoreactors for transformation of pollutants in water and air decontamination.
publishDate 2020
dc.date.none.fl_str_mv 2020-03
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/11336/110481
Löffler, Frank; Altermann, Fabian; Bucharsky, Ethel; Schell, Karl; Vera, Maria Laura; et al.; Morphological characterization and photocatalytic efficiency measurements of pure silica transparent open-cell sponges coated with TiO2; Wiley Blackwell Publishing, Inc; International Journal Of Applied Ceramic Technology; 17; 4; 3-2020; 1930-1939
1744-7402
CONICET Digital
CONICET
url http://hdl.handle.net/11336/110481
identifier_str_mv Löffler, Frank; Altermann, Fabian; Bucharsky, Ethel; Schell, Karl; Vera, Maria Laura; et al.; Morphological characterization and photocatalytic efficiency measurements of pure silica transparent open-cell sponges coated with TiO2; Wiley Blackwell Publishing, Inc; International Journal Of Applied Ceramic Technology; 17; 4; 3-2020; 1930-1939
1744-7402
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://onlinelibrary.wiley.com/doi/abs/10.1111/ijac.13504
info:eu-repo/semantics/altIdentifier/doi/10.1111/ijac.13504
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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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