UV-enhanced ozone gas sensing response of ZnO-SnO2 heterojunctions at room temperature
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
DOI: | 10.1016/j.snb.2016.08.158 |
Texto Completo: | http://dx.doi.org/10.1016/j.snb.2016.08.158 http://hdl.handle.net/11449/164752 |
Resumo: | The sensitivity of ZnO-SnO2 heterojunctions to ozone gas was investigated in this work, the two-phase materials of which were prepared via a hydrothermal route, resulting in nanocomposites in which the formation of heterojunctions was confirmed by microscopy analyses. While the sensing effectiveness of these materials is currently verified for application above 150 degrees C, these temperatures are here drastically reduced to room temperature by considering sensing activity under continuous UV irradiation, even for ozone concentrations as low as 20 ppb. This approach resulted in a fast sensing response, a short recovery time and a good selectivity compared to other gases, demonstrating a great potential of such heterojunctions for applications in environmental monitoring devices. (C) 2016 Elsevier B.V. All rights reserved. |
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UV-enhanced ozone gas sensing response of ZnO-SnO2 heterojunctions at room temperatureHydrothermalHeterojunctionZnOSnO2UV lightOzone sensorThe sensitivity of ZnO-SnO2 heterojunctions to ozone gas was investigated in this work, the two-phase materials of which were prepared via a hydrothermal route, resulting in nanocomposites in which the formation of heterojunctions was confirmed by microscopy analyses. While the sensing effectiveness of these materials is currently verified for application above 150 degrees C, these temperatures are here drastically reduced to room temperature by considering sensing activity under continuous UV irradiation, even for ozone concentrations as low as 20 ppb. This approach resulted in a fast sensing response, a short recovery time and a good selectivity compared to other gases, demonstrating a great potential of such heterojunctions for applications in environmental monitoring devices. (C) 2016 Elsevier B.V. All rights reserved.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Brazilian Nanotechnology National Laboratory (LNNano), Microfabrication laboratory, Campinas, SP, BrazilSao Paulo State Univ, Inst Chem, LIEC, POB 355, BR-14800900 Araraquara, SP, BrazilUniv Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, BrazilAix Marseille Univ, CNRS, IM2NP 7334, F-13397 Marseille, FranceEMBRAPA Instrumentacao, Rua 15 Novembro 1452, BR-13560970 Sao Carlos, SP, BrazilSao Paulo State Univ, Inst Chem, LIEC, POB 355, BR-14800900 Araraquara, SP, BrazilFAPESP: 2013/09573-3FAPESP: 2013/07296-2FAPESP: 2015/20124-1FAPESP: 2012/15170-6Brazilian Nanotechnology National Laboratory (LNNano), Microfabrication laboratory, Campinas, SP, Brazil: LMF-18580Elsevier B.V.Universidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Aix Marseille UnivEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Silva, Luis F. da [UNESP]M'Peko, J. -C.Catto, Ariadne C.Bernardini, SandrineMastelaro, Valmor R.Aguir, KhalifaRibeiro, CaueLongo, Elson [UNESP]2018-11-26T17:55:57Z2018-11-26T17:55:57Z2017-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article573-579application/pdfhttp://dx.doi.org/10.1016/j.snb.2016.08.158Sensors And Actuators B-chemical. Lausanne: Elsevier Science Sa, v. 240, p. 573-579, 2017.0925-4005http://hdl.handle.net/11449/16475210.1016/j.snb.2016.08.158WOS:000390622300067WOS000390622300067.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSensors And Actuators B-chemical1,406info:eu-repo/semantics/openAccess2023-11-08T06:14:40Zoai:repositorio.unesp.br:11449/164752Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:11:01.994634Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
UV-enhanced ozone gas sensing response of ZnO-SnO2 heterojunctions at room temperature |
title |
UV-enhanced ozone gas sensing response of ZnO-SnO2 heterojunctions at room temperature |
spellingShingle |
UV-enhanced ozone gas sensing response of ZnO-SnO2 heterojunctions at room temperature UV-enhanced ozone gas sensing response of ZnO-SnO2 heterojunctions at room temperature Silva, Luis F. da [UNESP] Hydrothermal Heterojunction ZnO SnO2 UV light Ozone sensor Silva, Luis F. da [UNESP] Hydrothermal Heterojunction ZnO SnO2 UV light Ozone sensor |
title_short |
UV-enhanced ozone gas sensing response of ZnO-SnO2 heterojunctions at room temperature |
title_full |
UV-enhanced ozone gas sensing response of ZnO-SnO2 heterojunctions at room temperature |
title_fullStr |
UV-enhanced ozone gas sensing response of ZnO-SnO2 heterojunctions at room temperature UV-enhanced ozone gas sensing response of ZnO-SnO2 heterojunctions at room temperature |
title_full_unstemmed |
UV-enhanced ozone gas sensing response of ZnO-SnO2 heterojunctions at room temperature UV-enhanced ozone gas sensing response of ZnO-SnO2 heterojunctions at room temperature |
title_sort |
UV-enhanced ozone gas sensing response of ZnO-SnO2 heterojunctions at room temperature |
author |
Silva, Luis F. da [UNESP] |
author_facet |
Silva, Luis F. da [UNESP] Silva, Luis F. da [UNESP] M'Peko, J. -C. Catto, Ariadne C. Bernardini, Sandrine Mastelaro, Valmor R. Aguir, Khalifa Ribeiro, Caue Longo, Elson [UNESP] M'Peko, J. -C. Catto, Ariadne C. Bernardini, Sandrine Mastelaro, Valmor R. Aguir, Khalifa Ribeiro, Caue Longo, Elson [UNESP] |
author_role |
author |
author2 |
M'Peko, J. -C. Catto, Ariadne C. Bernardini, Sandrine Mastelaro, Valmor R. Aguir, Khalifa Ribeiro, Caue Longo, Elson [UNESP] |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) Aix Marseille Univ Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) |
dc.contributor.author.fl_str_mv |
Silva, Luis F. da [UNESP] M'Peko, J. -C. Catto, Ariadne C. Bernardini, Sandrine Mastelaro, Valmor R. Aguir, Khalifa Ribeiro, Caue Longo, Elson [UNESP] |
dc.subject.por.fl_str_mv |
Hydrothermal Heterojunction ZnO SnO2 UV light Ozone sensor |
topic |
Hydrothermal Heterojunction ZnO SnO2 UV light Ozone sensor |
description |
The sensitivity of ZnO-SnO2 heterojunctions to ozone gas was investigated in this work, the two-phase materials of which were prepared via a hydrothermal route, resulting in nanocomposites in which the formation of heterojunctions was confirmed by microscopy analyses. While the sensing effectiveness of these materials is currently verified for application above 150 degrees C, these temperatures are here drastically reduced to room temperature by considering sensing activity under continuous UV irradiation, even for ozone concentrations as low as 20 ppb. This approach resulted in a fast sensing response, a short recovery time and a good selectivity compared to other gases, demonstrating a great potential of such heterojunctions for applications in environmental monitoring devices. (C) 2016 Elsevier B.V. All rights reserved. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-03-01 2018-11-26T17:55:57Z 2018-11-26T17:55:57Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.snb.2016.08.158 Sensors And Actuators B-chemical. Lausanne: Elsevier Science Sa, v. 240, p. 573-579, 2017. 0925-4005 http://hdl.handle.net/11449/164752 10.1016/j.snb.2016.08.158 WOS:000390622300067 WOS000390622300067.pdf |
url |
http://dx.doi.org/10.1016/j.snb.2016.08.158 http://hdl.handle.net/11449/164752 |
identifier_str_mv |
Sensors And Actuators B-chemical. Lausanne: Elsevier Science Sa, v. 240, p. 573-579, 2017. 0925-4005 10.1016/j.snb.2016.08.158 WOS:000390622300067 WOS000390622300067.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Sensors And Actuators B-chemical 1,406 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
573-579 application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier B.V. |
publisher.none.fl_str_mv |
Elsevier B.V. |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1822182411866210304 |
dc.identifier.doi.none.fl_str_mv |
10.1016/j.snb.2016.08.158 |