Microwave-assisted synthesis of TiO2 nanoparticles: photocatalytic activity of powders and thin films

A simple, rapid, and effective synthesis methodology for the preparation of high-performance TiO2 nanoparticles and thin films by combining colloidal sol-gel and microwave-assisted hydrothermal synthesis was developed. The obtained results indicate that the heating with microwaves at 180 °C for 20 m...

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Detalles Bibliográficos
Autores: Falk, Gilberto S., Borlaf, Mario, López-Muñoz, M. José, Fariñas, Juan C., Rodrigues Neto, J. B., Moreno, Rodrigo
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2018
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/411712
Acceso en línea:http://hdl.handle.net/10261/411712
https://api.elsevier.com/content/abstract/scopus_id/85041217755
Access Level:acceso abierto
Palabra clave:Microwave synthesis
Nanoparticles
Photocatalysis
Thin films
TiO2
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spelling Microwave-assisted synthesis of TiO2 nanoparticles: photocatalytic activity of powders and thin filmsFalk, Gilberto S.Borlaf, MarioLópez-Muñoz, M. JoséFariñas, Juan C.Rodrigues Neto, J. B.Moreno, RodrigoMicrowave synthesisNanoparticlesPhotocatalysisThin filmsTiO2A simple, rapid, and effective synthesis methodology for the preparation of high-performance TiO2 nanoparticles and thin films by combining colloidal sol-gel and microwave-assisted hydrothermal synthesis was developed. The obtained results indicate that the heating with microwaves at 180 °C for 20 min was enough to synthesize crystalline TiO2 nanoparticles, presenting anatase as a major phase with a crystal size of ~ 7 nm and a specific surface area of 220 m2 g−1. A secondary thermal treatment improved the crystallinity and induced the anatase-to-rutile transformation. The highest photocatalytic activity was found for the as-synthesized powder without any additional thermal treatment. Thin films were also prepared by dip-coating and its high photocatalytic activity showed a kinetic curve comparable to that of a thin film of commercial TiO2 powder prepared under similar conditions.This work was supported by Ministerio de Economía, Industria y Competitividad (Government of Spain) and FEDER Funds under the Grant No. MAT2015-67586-C3-2-R and CTM2015-69246-R.Peer reviewedSpringerConselho Nacional das Fundaçôes Estaduais de Amparo à Pesquisa (Brasil)Ministerio de Economía y Competitividad (España)0000-0002-5954-7516#NODATA##NODATA##NODATA##NODATA##NODATA#Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/411712https://api.elsevier.com/content/abstract/scopus_id/85041217755reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO//MAT2015-67586-C3-2-Rinfo:eu-repo/grantAgreement/MINECO//CTM2015-69246-RJournal of Nanoparticle Researchhttps://doi.org/10.1007/s11051-018-4140-7Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4117122026-05-22T06:33:51Z
dc.title.none.fl_str_mv Microwave-assisted synthesis of TiO2 nanoparticles: photocatalytic activity of powders and thin films
title Microwave-assisted synthesis of TiO2 nanoparticles: photocatalytic activity of powders and thin films
spellingShingle Microwave-assisted synthesis of TiO2 nanoparticles: photocatalytic activity of powders and thin films
Falk, Gilberto S.
Microwave synthesis
Nanoparticles
Photocatalysis
Thin films
TiO2
title_short Microwave-assisted synthesis of TiO2 nanoparticles: photocatalytic activity of powders and thin films
title_full Microwave-assisted synthesis of TiO2 nanoparticles: photocatalytic activity of powders and thin films
title_fullStr Microwave-assisted synthesis of TiO2 nanoparticles: photocatalytic activity of powders and thin films
title_full_unstemmed Microwave-assisted synthesis of TiO2 nanoparticles: photocatalytic activity of powders and thin films
title_sort Microwave-assisted synthesis of TiO2 nanoparticles: photocatalytic activity of powders and thin films
dc.creator.none.fl_str_mv Falk, Gilberto S.
Borlaf, Mario
López-Muñoz, M. José
Fariñas, Juan C.
Rodrigues Neto, J. B.
Moreno, Rodrigo
author Falk, Gilberto S.
author_facet Falk, Gilberto S.
Borlaf, Mario
López-Muñoz, M. José
Fariñas, Juan C.
Rodrigues Neto, J. B.
Moreno, Rodrigo
author_role author
author2 Borlaf, Mario
López-Muñoz, M. José
Fariñas, Juan C.
Rodrigues Neto, J. B.
Moreno, Rodrigo
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Conselho Nacional das Fundaçôes Estaduais de Amparo à Pesquisa (Brasil)
Ministerio de Economía y Competitividad (España)
0000-0002-5954-7516
#NODATA#
#NODATA#
#NODATA#
#NODATA#
#NODATA#
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Microwave synthesis
Nanoparticles
Photocatalysis
Thin films
TiO2
topic Microwave synthesis
Nanoparticles
Photocatalysis
Thin films
TiO2
description A simple, rapid, and effective synthesis methodology for the preparation of high-performance TiO2 nanoparticles and thin films by combining colloidal sol-gel and microwave-assisted hydrothermal synthesis was developed. The obtained results indicate that the heating with microwaves at 180 °C for 20 min was enough to synthesize crystalline TiO2 nanoparticles, presenting anatase as a major phase with a crystal size of ~ 7 nm and a specific surface area of 220 m2 g−1. A secondary thermal treatment improved the crystallinity and induced the anatase-to-rutile transformation. The highest photocatalytic activity was found for the as-synthesized powder without any additional thermal treatment. Thin films were also prepared by dip-coating and its high photocatalytic activity showed a kinetic curve comparable to that of a thin film of commercial TiO2 powder prepared under similar conditions.
publishDate 2018
dc.date.none.fl_str_mv 2018
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/411712
https://api.elsevier.com/content/abstract/scopus_id/85041217755
url http://hdl.handle.net/10261/411712
https://api.elsevier.com/content/abstract/scopus_id/85041217755
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO//MAT2015-67586-C3-2-R
info:eu-repo/grantAgreement/MINECO//CTM2015-69246-R
Journal of Nanoparticle Research
https://doi.org/10.1007/s11051-018-4140-7
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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