Aerosol-assisted production of mesoporous titania microspheres with enhanced photocatalytic activity: The basis of an improved process

Autores
Araujo, Paula Zulema; Luca, Vittorio; Bozzano, Patricia B.; Bianchi, Hugo Luis; Soler Illia, Galo Juan de Avila Arturo; Blesa, Miguel Angel
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
An aerosol-based process was used to prepare mesoporous TiO2 microspheres (MTM) with an average diameter in the range of 0.5-1 μm. The structural characteristics and photocatalytic properties of the synthesized materials were determined. As-prepared MTM materials and those heated in air from 400 to 600 °C exhibited mesoporous texture with a narrow size distribution and an inorganic framework that consisted of 4-13 nm anatase crystallites. Pore volumes for the MTM materials were in the range of 0.17-0.34 cm3 g-1. Microspheres heated to 400 °C presented a locally ordered mesopore structure and possessed X-ray diffraction d spacings between 9.8 and 17.3 nm. Heating above 400 °C resulted in a loss of the mesoscopic order, a decrease of the surface area, retention of the porosity, and an increase of the anatase nanoparticle size to 13 nm. The accessibility of the pore volume was measured by monitoring the uptake of gallic acid (GA) using Fourier transform IR. The MTM materials made excellent catalysts for the photodegradation of GA, with the performance being higher than that of an equivalent sample of Degussa P25. The present MTM materials are advantageous in terms of their ease of separation from the aqueous phase, and hence a novel photocatalytic process is proposed based on separate adsorption and photocatalytic decomposition steps with an improved and more rational use of both catalyst and sunlight.
Fil: Araujo, Paula Zulema. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Luca, Vittorio. Australian Nuclear Science And Technology Organisation; Australia. Comisión Nacional de Energía Atómica; Argentina
Fil: Bozzano, Patricia B.. Comisión Nacional de Energía Atómica; Argentina
Fil: Bianchi, Hugo Luis. Universidad Nacional de San Martín; Argentina. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Soler Illia, Galo Juan de Avila Arturo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín; Argentina. Comisión Nacional de Energía Atómica; Argentina
Fil: Blesa, Miguel Angel. Universidad Nacional de San Martín; Argentina. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
AEROSOL
MESOPOROUS
MICROSPHERES
PHOTOCATALYSIS
PHOTODEGRADATION
TITANIA
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:11336/188895
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/188895
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Aerosol-assisted production of mesoporous titania microspheres with enhanced photocatalytic activity: The basis of an improved processAraujo, Paula ZulemaLuca, VittorioBozzano, Patricia B.Bianchi, Hugo LuisSoler Illia, Galo Juan de Avila ArturoBlesa, Miguel AngelAEROSOLMESOPOROUSMICROSPHERESPHOTOCATALYSISPHOTODEGRADATIONTITANIAhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1An aerosol-based process was used to prepare mesoporous TiO2 microspheres (MTM) with an average diameter in the range of 0.5-1 μm. The structural characteristics and photocatalytic properties of the synthesized materials were determined. As-prepared MTM materials and those heated in air from 400 to 600 °C exhibited mesoporous texture with a narrow size distribution and an inorganic framework that consisted of 4-13 nm anatase crystallites. Pore volumes for the MTM materials were in the range of 0.17-0.34 cm3 g-1. Microspheres heated to 400 °C presented a locally ordered mesopore structure and possessed X-ray diffraction d spacings between 9.8 and 17.3 nm. Heating above 400 °C resulted in a loss of the mesoscopic order, a decrease of the surface area, retention of the porosity, and an increase of the anatase nanoparticle size to 13 nm. The accessibility of the pore volume was measured by monitoring the uptake of gallic acid (GA) using Fourier transform IR. The MTM materials made excellent catalysts for the photodegradation of GA, with the performance being higher than that of an equivalent sample of Degussa P25. The present MTM materials are advantageous in terms of their ease of separation from the aqueous phase, and hence a novel photocatalytic process is proposed based on separate adsorption and photocatalytic decomposition steps with an improved and more rational use of both catalyst and sunlight.Fil: Araujo, Paula Zulema. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Luca, Vittorio. Australian Nuclear Science And Technology Organisation; Australia. Comisión Nacional de Energía Atómica; ArgentinaFil: Bozzano, Patricia B.. Comisión Nacional de Energía Atómica; ArgentinaFil: Bianchi, Hugo Luis. Universidad Nacional de San Martín; Argentina. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Soler Illia, Galo Juan de Avila Arturo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín; Argentina. Comisión Nacional de Energía Atómica; ArgentinaFil: Blesa, Miguel Angel. Universidad Nacional de San Martín; Argentina. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaAmerican Chemical Society2010-06info: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/11336/188895Araujo, Paula Zulema; Luca, Vittorio; Bozzano, Patricia B.; Bianchi, Hugo Luis; Soler Illia, Galo Juan de Avila Arturo; et al.; Aerosol-assisted production of mesoporous titania microspheres with enhanced photocatalytic activity: The basis of an improved process; American Chemical Society; ACS Applied Materials & Interfaces; 2; 6; 6-2010; 1663-16731944-8244CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/am100188qinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:59:01Zoai:ri.conicet.gov.ar:11336/188895instacron: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 09:59:01.88CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Aerosol-assisted production of mesoporous titania microspheres with enhanced photocatalytic activity: The basis of an improved process
title Aerosol-assisted production of mesoporous titania microspheres with enhanced photocatalytic activity: The basis of an improved process
spellingShingle Aerosol-assisted production of mesoporous titania microspheres with enhanced photocatalytic activity: The basis of an improved process
Araujo, Paula Zulema
AEROSOL
MESOPOROUS
MICROSPHERES
PHOTOCATALYSIS
PHOTODEGRADATION
TITANIA
title_short Aerosol-assisted production of mesoporous titania microspheres with enhanced photocatalytic activity: The basis of an improved process
title_full Aerosol-assisted production of mesoporous titania microspheres with enhanced photocatalytic activity: The basis of an improved process
title_fullStr Aerosol-assisted production of mesoporous titania microspheres with enhanced photocatalytic activity: The basis of an improved process
title_full_unstemmed Aerosol-assisted production of mesoporous titania microspheres with enhanced photocatalytic activity: The basis of an improved process
title_sort Aerosol-assisted production of mesoporous titania microspheres with enhanced photocatalytic activity: The basis of an improved process
dc.creator.none.fl_str_mv Araujo, Paula Zulema
Luca, Vittorio
Bozzano, Patricia B.
Bianchi, Hugo Luis
Soler Illia, Galo Juan de Avila Arturo
Blesa, Miguel Angel
author Araujo, Paula Zulema
author_facet Araujo, Paula Zulema
Luca, Vittorio
Bozzano, Patricia B.
Bianchi, Hugo Luis
Soler Illia, Galo Juan de Avila Arturo
Blesa, Miguel Angel
author_role author
author2 Luca, Vittorio
Bozzano, Patricia B.
Bianchi, Hugo Luis
Soler Illia, Galo Juan de Avila Arturo
Blesa, Miguel Angel
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv AEROSOL
MESOPOROUS
MICROSPHERES
PHOTOCATALYSIS
PHOTODEGRADATION
TITANIA
topic AEROSOL
MESOPOROUS
MICROSPHERES
PHOTOCATALYSIS
PHOTODEGRADATION
TITANIA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv An aerosol-based process was used to prepare mesoporous TiO2 microspheres (MTM) with an average diameter in the range of 0.5-1 μm. The structural characteristics and photocatalytic properties of the synthesized materials were determined. As-prepared MTM materials and those heated in air from 400 to 600 °C exhibited mesoporous texture with a narrow size distribution and an inorganic framework that consisted of 4-13 nm anatase crystallites. Pore volumes for the MTM materials were in the range of 0.17-0.34 cm3 g-1. Microspheres heated to 400 °C presented a locally ordered mesopore structure and possessed X-ray diffraction d spacings between 9.8 and 17.3 nm. Heating above 400 °C resulted in a loss of the mesoscopic order, a decrease of the surface area, retention of the porosity, and an increase of the anatase nanoparticle size to 13 nm. The accessibility of the pore volume was measured by monitoring the uptake of gallic acid (GA) using Fourier transform IR. The MTM materials made excellent catalysts for the photodegradation of GA, with the performance being higher than that of an equivalent sample of Degussa P25. The present MTM materials are advantageous in terms of their ease of separation from the aqueous phase, and hence a novel photocatalytic process is proposed based on separate adsorption and photocatalytic decomposition steps with an improved and more rational use of both catalyst and sunlight.
Fil: Araujo, Paula Zulema. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Luca, Vittorio. Australian Nuclear Science And Technology Organisation; Australia. Comisión Nacional de Energía Atómica; Argentina
Fil: Bozzano, Patricia B.. Comisión Nacional de Energía Atómica; Argentina
Fil: Bianchi, Hugo Luis. Universidad Nacional de San Martín; Argentina. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Soler Illia, Galo Juan de Avila Arturo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de San Martín; Argentina. Comisión Nacional de Energía Atómica; Argentina
Fil: Blesa, Miguel Angel. Universidad Nacional de San Martín; Argentina. Comisión Nacional de Energía Atómica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description An aerosol-based process was used to prepare mesoporous TiO2 microspheres (MTM) with an average diameter in the range of 0.5-1 μm. The structural characteristics and photocatalytic properties of the synthesized materials were determined. As-prepared MTM materials and those heated in air from 400 to 600 °C exhibited mesoporous texture with a narrow size distribution and an inorganic framework that consisted of 4-13 nm anatase crystallites. Pore volumes for the MTM materials were in the range of 0.17-0.34 cm3 g-1. Microspheres heated to 400 °C presented a locally ordered mesopore structure and possessed X-ray diffraction d spacings between 9.8 and 17.3 nm. Heating above 400 °C resulted in a loss of the mesoscopic order, a decrease of the surface area, retention of the porosity, and an increase of the anatase nanoparticle size to 13 nm. The accessibility of the pore volume was measured by monitoring the uptake of gallic acid (GA) using Fourier transform IR. The MTM materials made excellent catalysts for the photodegradation of GA, with the performance being higher than that of an equivalent sample of Degussa P25. The present MTM materials are advantageous in terms of their ease of separation from the aqueous phase, and hence a novel photocatalytic process is proposed based on separate adsorption and photocatalytic decomposition steps with an improved and more rational use of both catalyst and sunlight.
publishDate 2010
dc.date.none.fl_str_mv 2010-06
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/11336/188895
Araujo, Paula Zulema; Luca, Vittorio; Bozzano, Patricia B.; Bianchi, Hugo Luis; Soler Illia, Galo Juan de Avila Arturo; et al.; Aerosol-assisted production of mesoporous titania microspheres with enhanced photocatalytic activity: The basis of an improved process; American Chemical Society; ACS Applied Materials & Interfaces; 2; 6; 6-2010; 1663-1673
1944-8244
CONICET Digital
CONICET
url http://hdl.handle.net/11336/188895
identifier_str_mv Araujo, Paula Zulema; Luca, Vittorio; Bozzano, Patricia B.; Bianchi, Hugo Luis; Soler Illia, Galo Juan de Avila Arturo; et al.; Aerosol-assisted production of mesoporous titania microspheres with enhanced photocatalytic activity: The basis of an improved process; American Chemical Society; ACS Applied Materials & Interfaces; 2; 6; 6-2010; 1663-1673
1944-8244
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1021/am100188q
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
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score 13.13397

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