Highly selective sub–10 ppm H2S gas sensors based on Ag-doped CaCu3Ti4O12 films

Autores
Natkaeo, Aukrit; Phokharatkul, Ditsayut; Hodak, Jose Hector; Wisitsoraat, Anurat; Hodak, Satreerat K.
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The detection of the toxic H2S gas is of great practical, environmental and industrial interest. This work presents sensing devices fabricated with Ag-doped CaCu3Ti4O12 (CCTO) thin films using a cost effective sol-gel deposition method. When compared with undoped CCTO sensors, very low doping levels of Ag cause a dramatic improvement of the response towards H2S gas. The Ag-doped CCTO films were found to be remarkable sensors towards H2S in the concentration range of 0.2–10 ppm. In addition, the response of these sensors towards NH3, H2, NO2 and ethanol vapor was up to two orders of magnitude lower than that for H2S, yielding a highly selective mean of detecting and quantifying H2S. Gas sensing experiments were conducted at operating temperatures ranging from 150 to 350 °C with an optimum response found at 250 °C. In the studied temperature range, Ag-doped CCTO film sensors also showed much shorter response times than that of undoped one. It is found that Ag plays a role promoting the adsorption and catalytic oxidation of H2S leading to drastic changes in the electrical resistance via electron injection into CCTO.
Fil: Natkaeo, Aukrit. Chulalongkorn University; Tailandia
Fil: Phokharatkul, Ditsayut. Carbon-based Devices And Nanoelectronics Laboratory; Tailandia
Fil: Hodak, Jose Hector. Chulalongkorn University; Tailandia. 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: Wisitsoraat, Anurat. Carbon-based Devices And Nanoelectronics Laboratory; Tailandia
Fil: Hodak, Satreerat K.. Chulalongkorn University; Tailandia
Materia
Ag-doped
CaCu3Ti4O12
H2S sensor
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:11336/88622
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/88622
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Highly selective sub–10 ppm H2S gas sensors based on Ag-doped CaCu3Ti4O12 filmsNatkaeo, AukritPhokharatkul, DitsayutHodak, Jose HectorWisitsoraat, AnuratHodak, Satreerat K.Ag-dopedCaCu3Ti4O12H2S sensorhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The detection of the toxic H2S gas is of great practical, environmental and industrial interest. This work presents sensing devices fabricated with Ag-doped CaCu3Ti4O12 (CCTO) thin films using a cost effective sol-gel deposition method. When compared with undoped CCTO sensors, very low doping levels of Ag cause a dramatic improvement of the response towards H2S gas. The Ag-doped CCTO films were found to be remarkable sensors towards H2S in the concentration range of 0.2–10 ppm. In addition, the response of these sensors towards NH3, H2, NO2 and ethanol vapor was up to two orders of magnitude lower than that for H2S, yielding a highly selective mean of detecting and quantifying H2S. Gas sensing experiments were conducted at operating temperatures ranging from 150 to 350 °C with an optimum response found at 250 °C. In the studied temperature range, Ag-doped CCTO film sensors also showed much shorter response times than that of undoped one. It is found that Ag plays a role promoting the adsorption and catalytic oxidation of H2S leading to drastic changes in the electrical resistance via electron injection into CCTO.Fil: Natkaeo, Aukrit. Chulalongkorn University; TailandiaFil: Phokharatkul, Ditsayut. Carbon-based Devices And Nanoelectronics Laboratory; TailandiaFil: Hodak, Jose Hector. Chulalongkorn University; Tailandia. 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: Wisitsoraat, Anurat. Carbon-based Devices And Nanoelectronics Laboratory; TailandiaFil: Hodak, Satreerat K.. Chulalongkorn University; TailandiaElsevier Science Sa2018-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/88622Natkaeo, Aukrit; Phokharatkul, Ditsayut; Hodak, Jose Hector; Wisitsoraat, Anurat; Hodak, Satreerat K.; Highly selective sub–10 ppm H2S gas sensors based on Ag-doped CaCu3Ti4O12 films; Elsevier Science Sa; Sensors and Actuators B: Chemical; 260; 5-2018; 571-5800925-4005CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S092540051732467Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.snb.2017.12.134info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:46:47Zoai:ri.conicet.gov.ar:11336/88622instacron: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 09:46:47.54CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Highly selective sub–10 ppm H2S gas sensors based on Ag-doped CaCu3Ti4O12 films
title Highly selective sub–10 ppm H2S gas sensors based on Ag-doped CaCu3Ti4O12 films
spellingShingle Highly selective sub–10 ppm H2S gas sensors based on Ag-doped CaCu3Ti4O12 films
Natkaeo, Aukrit
Ag-doped
CaCu3Ti4O12
H2S sensor
title_short Highly selective sub–10 ppm H2S gas sensors based on Ag-doped CaCu3Ti4O12 films
title_full Highly selective sub–10 ppm H2S gas sensors based on Ag-doped CaCu3Ti4O12 films
title_fullStr Highly selective sub–10 ppm H2S gas sensors based on Ag-doped CaCu3Ti4O12 films
title_full_unstemmed Highly selective sub–10 ppm H2S gas sensors based on Ag-doped CaCu3Ti4O12 films
title_sort Highly selective sub–10 ppm H2S gas sensors based on Ag-doped CaCu3Ti4O12 films
dc.creator.none.fl_str_mv Natkaeo, Aukrit
Phokharatkul, Ditsayut
Hodak, Jose Hector
Wisitsoraat, Anurat
Hodak, Satreerat K.
author Natkaeo, Aukrit
author_facet Natkaeo, Aukrit
Phokharatkul, Ditsayut
Hodak, Jose Hector
Wisitsoraat, Anurat
Hodak, Satreerat K.
author_role author
author2 Phokharatkul, Ditsayut
Hodak, Jose Hector
Wisitsoraat, Anurat
Hodak, Satreerat K.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ag-doped
CaCu3Ti4O12
H2S sensor
topic Ag-doped
CaCu3Ti4O12
H2S sensor
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The detection of the toxic H2S gas is of great practical, environmental and industrial interest. This work presents sensing devices fabricated with Ag-doped CaCu3Ti4O12 (CCTO) thin films using a cost effective sol-gel deposition method. When compared with undoped CCTO sensors, very low doping levels of Ag cause a dramatic improvement of the response towards H2S gas. The Ag-doped CCTO films were found to be remarkable sensors towards H2S in the concentration range of 0.2–10 ppm. In addition, the response of these sensors towards NH3, H2, NO2 and ethanol vapor was up to two orders of magnitude lower than that for H2S, yielding a highly selective mean of detecting and quantifying H2S. Gas sensing experiments were conducted at operating temperatures ranging from 150 to 350 °C with an optimum response found at 250 °C. In the studied temperature range, Ag-doped CCTO film sensors also showed much shorter response times than that of undoped one. It is found that Ag plays a role promoting the adsorption and catalytic oxidation of H2S leading to drastic changes in the electrical resistance via electron injection into CCTO.
Fil: Natkaeo, Aukrit. Chulalongkorn University; Tailandia
Fil: Phokharatkul, Ditsayut. Carbon-based Devices And Nanoelectronics Laboratory; Tailandia
Fil: Hodak, Jose Hector. Chulalongkorn University; Tailandia. 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: Wisitsoraat, Anurat. Carbon-based Devices And Nanoelectronics Laboratory; Tailandia
Fil: Hodak, Satreerat K.. Chulalongkorn University; Tailandia
description The detection of the toxic H2S gas is of great practical, environmental and industrial interest. This work presents sensing devices fabricated with Ag-doped CaCu3Ti4O12 (CCTO) thin films using a cost effective sol-gel deposition method. When compared with undoped CCTO sensors, very low doping levels of Ag cause a dramatic improvement of the response towards H2S gas. The Ag-doped CCTO films were found to be remarkable sensors towards H2S in the concentration range of 0.2–10 ppm. In addition, the response of these sensors towards NH3, H2, NO2 and ethanol vapor was up to two orders of magnitude lower than that for H2S, yielding a highly selective mean of detecting and quantifying H2S. Gas sensing experiments were conducted at operating temperatures ranging from 150 to 350 °C with an optimum response found at 250 °C. In the studied temperature range, Ag-doped CCTO film sensors also showed much shorter response times than that of undoped one. It is found that Ag plays a role promoting the adsorption and catalytic oxidation of H2S leading to drastic changes in the electrical resistance via electron injection into CCTO.
publishDate 2018
dc.date.none.fl_str_mv 2018-05
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/11336/88622
Natkaeo, Aukrit; Phokharatkul, Ditsayut; Hodak, Jose Hector; Wisitsoraat, Anurat; Hodak, Satreerat K.; Highly selective sub–10 ppm H2S gas sensors based on Ag-doped CaCu3Ti4O12 films; Elsevier Science Sa; Sensors and Actuators B: Chemical; 260; 5-2018; 571-580
0925-4005
CONICET Digital
CONICET
url http://hdl.handle.net/11336/88622
identifier_str_mv Natkaeo, Aukrit; Phokharatkul, Ditsayut; Hodak, Jose Hector; Wisitsoraat, Anurat; Hodak, Satreerat K.; Highly selective sub–10 ppm H2S gas sensors based on Ag-doped CaCu3Ti4O12 films; Elsevier Science Sa; Sensors and Actuators B: Chemical; 260; 5-2018; 571-580
0925-4005
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/pii/S092540051732467X
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.snb.2017.12.134
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 Sa
publisher.none.fl_str_mv Elsevier Science Sa
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
_version_ 1844613460163297280
score 13.070432

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