Sol–gel synthesis of mesoporous CaCu3Ti4O12 thin films and their gas sensing response

Autores
Parra, Rodrigo; Savu, Raluca; Ramajo, Leandro Alfredo; Ponce, Miguel Adolfo; Varela, J. A.; Castro, Miriam Susana; Bueno. P. R.; Joanni, E.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A new sol–gel synthesis procedure of stable calcium copper titanate (CaCu3Ti4O12—CCTO) precursor sols for the fabrication of porous films was developed. The composition of the sol was selected in order to avoid the precipitation of undesired phases; ethanol was used as solvent, acetic acid as modifier and poly(ethyleneglycol) as a linker agent. Films deposited by spin-coating onto oxidized silicon substrates were annealed at 700 °C. The main phase present in the samples, as detected by X-ray diffraction and Raman spectroscopy, was CaCu3Ti4O12. Scanning electron microscopy analysis showed that mesoporous structures, with thicknesses between 200 and 400 nm, were developed as a result of the processing conditions. The films were tested regarding their sensibility towards oxygen and nitrogen at atmospheric pressure using working temperatures from 200 to 290 °C. The samples exhibited n-type conductivity, high sensitivity and short response times. These characteristics indicate that CCTO mesoporous structures obtained by sol–gel are suitable for application in gas sensing.
Fil: Parra, Rodrigo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; Argentina
Fil: Savu, Raluca. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Ramajo, Leandro Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; Argentina
Fil: Ponce, Miguel Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; Argentina
Fil: Varela, J. A.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Castro, Miriam Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; Argentina
Fil: Bueno. P. R.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Joanni, E.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil. Centro de Tecnologia da Informação Renato Archer; Brasil
Materia
Cacu3ti4o12
Mesoporous Films
Gas Sensor
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/13241
Acceder
id CONICETDig_ec4463bd76ea0144bc48b4c18edfd693
oai_identifier_str oai:ri.conicet.gov.ar:11336/13241
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Sol–gel synthesis of mesoporous CaCu3Ti4O12 thin films and their gas sensing responseParra, RodrigoSavu, RalucaRamajo, Leandro AlfredoPonce, Miguel AdolfoVarela, J. A.Castro, Miriam SusanaBueno. P. R.Joanni, E.Cacu3ti4o12Mesoporous FilmsGas Sensorhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2https://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1A new sol–gel synthesis procedure of stable calcium copper titanate (CaCu3Ti4O12—CCTO) precursor sols for the fabrication of porous films was developed. The composition of the sol was selected in order to avoid the precipitation of undesired phases; ethanol was used as solvent, acetic acid as modifier and poly(ethyleneglycol) as a linker agent. Films deposited by spin-coating onto oxidized silicon substrates were annealed at 700 °C. The main phase present in the samples, as detected by X-ray diffraction and Raman spectroscopy, was CaCu3Ti4O12. Scanning electron microscopy analysis showed that mesoporous structures, with thicknesses between 200 and 400 nm, were developed as a result of the processing conditions. The films were tested regarding their sensibility towards oxygen and nitrogen at atmospheric pressure using working temperatures from 200 to 290 °C. The samples exhibited n-type conductivity, high sensitivity and short response times. These characteristics indicate that CCTO mesoporous structures obtained by sol–gel are suitable for application in gas sensing.Fil: Parra, Rodrigo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; ArgentinaFil: Savu, Raluca. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Ramajo, Leandro Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; ArgentinaFil: Ponce, Miguel Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; ArgentinaFil: Varela, J. A.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Castro, Miriam Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; ArgentinaFil: Bueno. P. R.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilFil: Joanni, E.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil. Centro de Tecnologia da Informação Renato Archer; BrasilElsevier2010-04-01info: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/11336/13241Parra, Rodrigo; Savu, Raluca; Ramajo, Leandro Alfredo; Ponce, Miguel Adolfo; Varela, J. A.; et al.; Sol–gel synthesis of mesoporous CaCu3Ti4O12 thin films and their gas sensing response; Elsevier; Journal Of Solid State Chemistry; 183; 6; 1-4-2010; 1209-12140022-4596enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0022459610001234info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jssc.2010.03.033info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:59:41Zoai:ri.conicet.gov.ar:11336/13241instacron: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:34982025-09-29 09:59:41.895CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Sol–gel synthesis of mesoporous CaCu3Ti4O12 thin films and their gas sensing response
title Sol–gel synthesis of mesoporous CaCu3Ti4O12 thin films and their gas sensing response
spellingShingle Sol–gel synthesis of mesoporous CaCu3Ti4O12 thin films and their gas sensing response
Parra, Rodrigo
Cacu3ti4o12
Mesoporous Films
Gas Sensor
title_short Sol–gel synthesis of mesoporous CaCu3Ti4O12 thin films and their gas sensing response
title_full Sol–gel synthesis of mesoporous CaCu3Ti4O12 thin films and their gas sensing response
title_fullStr Sol–gel synthesis of mesoporous CaCu3Ti4O12 thin films and their gas sensing response
title_full_unstemmed Sol–gel synthesis of mesoporous CaCu3Ti4O12 thin films and their gas sensing response
title_sort Sol–gel synthesis of mesoporous CaCu3Ti4O12 thin films and their gas sensing response
dc.creator.none.fl_str_mv Parra, Rodrigo
Savu, Raluca
Ramajo, Leandro Alfredo
Ponce, Miguel Adolfo
Varela, J. A.
Castro, Miriam Susana
Bueno. P. R.
Joanni, E.
author Parra, Rodrigo
author_facet Parra, Rodrigo
Savu, Raluca
Ramajo, Leandro Alfredo
Ponce, Miguel Adolfo
Varela, J. A.
Castro, Miriam Susana
Bueno. P. R.
Joanni, E.
author_role author
author2 Savu, Raluca
Ramajo, Leandro Alfredo
Ponce, Miguel Adolfo
Varela, J. A.
Castro, Miriam Susana
Bueno. P. R.
Joanni, E.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Cacu3ti4o12
Mesoporous Films
Gas Sensor
topic Cacu3ti4o12
Mesoporous Films
Gas Sensor
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A new sol–gel synthesis procedure of stable calcium copper titanate (CaCu3Ti4O12—CCTO) precursor sols for the fabrication of porous films was developed. The composition of the sol was selected in order to avoid the precipitation of undesired phases; ethanol was used as solvent, acetic acid as modifier and poly(ethyleneglycol) as a linker agent. Films deposited by spin-coating onto oxidized silicon substrates were annealed at 700 °C. The main phase present in the samples, as detected by X-ray diffraction and Raman spectroscopy, was CaCu3Ti4O12. Scanning electron microscopy analysis showed that mesoporous structures, with thicknesses between 200 and 400 nm, were developed as a result of the processing conditions. The films were tested regarding their sensibility towards oxygen and nitrogen at atmospheric pressure using working temperatures from 200 to 290 °C. The samples exhibited n-type conductivity, high sensitivity and short response times. These characteristics indicate that CCTO mesoporous structures obtained by sol–gel are suitable for application in gas sensing.
Fil: Parra, Rodrigo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; Argentina
Fil: Savu, Raluca. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Ramajo, Leandro Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; Argentina
Fil: Ponce, Miguel Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; Argentina
Fil: Varela, J. A.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Castro, Miriam Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigación en Ciencia y Tecnología de Materiales (i); Argentina. Universidad Nacional de Mar del Plata. Facultad de Ingeniería; Argentina
Fil: Bueno. P. R.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
Fil: Joanni, E.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil. Centro de Tecnologia da Informação Renato Archer; Brasil
description A new sol–gel synthesis procedure of stable calcium copper titanate (CaCu3Ti4O12—CCTO) precursor sols for the fabrication of porous films was developed. The composition of the sol was selected in order to avoid the precipitation of undesired phases; ethanol was used as solvent, acetic acid as modifier and poly(ethyleneglycol) as a linker agent. Films deposited by spin-coating onto oxidized silicon substrates were annealed at 700 °C. The main phase present in the samples, as detected by X-ray diffraction and Raman spectroscopy, was CaCu3Ti4O12. Scanning electron microscopy analysis showed that mesoporous structures, with thicknesses between 200 and 400 nm, were developed as a result of the processing conditions. The films were tested regarding their sensibility towards oxygen and nitrogen at atmospheric pressure using working temperatures from 200 to 290 °C. The samples exhibited n-type conductivity, high sensitivity and short response times. These characteristics indicate that CCTO mesoporous structures obtained by sol–gel are suitable for application in gas sensing.
publishDate 2010
dc.date.none.fl_str_mv 2010-04-01
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/11336/13241
Parra, Rodrigo; Savu, Raluca; Ramajo, Leandro Alfredo; Ponce, Miguel Adolfo; Varela, J. A.; et al.; Sol–gel synthesis of mesoporous CaCu3Ti4O12 thin films and their gas sensing response; Elsevier; Journal Of Solid State Chemistry; 183; 6; 1-4-2010; 1209-1214
0022-4596
url http://hdl.handle.net/11336/13241
identifier_str_mv Parra, Rodrigo; Savu, Raluca; Ramajo, Leandro Alfredo; Ponce, Miguel Adolfo; Varela, J. A.; et al.; Sol–gel synthesis of mesoporous CaCu3Ti4O12 thin films and their gas sensing response; Elsevier; Journal Of Solid State Chemistry; 183; 6; 1-4-2010; 1209-1214
0022-4596
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0022459610001234
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jssc.2010.03.033
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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 13.070432

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