Ozone sensing properties of nickel phthalocyanine:ZnO nanorod heterostructures

Detalhes bibliográficos
Autor(a) principal: Joshi, Nirav [UNESP]
Data de Publicação: 2016
Outros Autores: Shimizu, Flavio M. [UNESP], Awan, Iram T. [UNESP], M'Peko, Jean-Claude [UNESP], Mastelaro, Valmor R. [UNESP], Oliveira, Osvaldo N. [UNESP], Silva, Luis F. da [UNESP], IEEE
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/159511
Resumo: We report on the chemiresistive gas sensing characteristics of ZnO nanorods (NRs) modified by a thin layer of nickel phthalocyanine (NiPc). Ozone detection was carried out through electrical measurements with an optimized performance at 250 degrees C, good reproducibility and suitable concentration range (from 80 to 890 ppb) for technological applications. The hybrid NiPc: ZnO films had superior performance to pure ZnO nanorods in terms of response time and sensitivity. The response times were 22 s and 26 s, respectively, whereas the ratio of resistances under ozone and air was 3.27 for NiPc: ZnO films and 2.56 for the pure ZnO NRs. The improvement in response time is attributed to the large surface area generated with the coating of the ZnO nanorods with the NiPc layer. Significantly, images taken with field-emission scanning electron microscopy (FE-SEM) indicated that the ZnO nanorods were fully covered with NiPc. X-ray diffraction measurements (XRD) revealed a preferential growth of the nanorod-like structures along the [100] direction. In summary, a successful approach has been developed to functionalize ZnO nanorods, which is promising for detection of ppb levels of ozone gas.
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spelling Ozone sensing properties of nickel phthalocyanine:ZnO nanorod heterostructuresHydrothermal techniqueheterostructuresOzoneGas sensingWe report on the chemiresistive gas sensing characteristics of ZnO nanorods (NRs) modified by a thin layer of nickel phthalocyanine (NiPc). Ozone detection was carried out through electrical measurements with an optimized performance at 250 degrees C, good reproducibility and suitable concentration range (from 80 to 890 ppb) for technological applications. The hybrid NiPc: ZnO films had superior performance to pure ZnO nanorods in terms of response time and sensitivity. The response times were 22 s and 26 s, respectively, whereas the ratio of resistances under ozone and air was 3.27 for NiPc: ZnO films and 2.56 for the pure ZnO NRs. The improvement in response time is attributed to the large surface area generated with the coating of the ZnO nanorods with the NiPc layer. Significantly, images taken with field-emission scanning electron microscopy (FE-SEM) indicated that the ZnO nanorods were fully covered with NiPc. X-ray diffraction measurements (XRD) revealed a preferential growth of the nanorod-like structures along the [100] direction. In summary, a successful approach has been developed to functionalize ZnO nanorods, which is promising for detection of ppb levels of ozone gas.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Sao Paulo State Univ, Inst Phys, IFSC, Sao Carlos, SP, BrazilSao Paulo State Univ, Inst Chem, LIEC, Araraquara, SP, BrazilSao Paulo State Univ, Inst Phys, IFSC, Sao Carlos, SP, BrazilSao Paulo State Univ, Inst Chem, LIEC, Araraquara, SP, BrazilFAPESP: 2014/23546-1FAPESP: 2012/15543-7IeeeUniversidade Estadual Paulista (Unesp)Joshi, Nirav [UNESP]Shimizu, Flavio M. [UNESP]Awan, Iram T. [UNESP]M'Peko, Jean-Claude [UNESP]Mastelaro, Valmor R. [UNESP]Oliveira, Osvaldo N. [UNESP]Silva, Luis F. da [UNESP]IEEE2018-11-26T15:44:07Z2018-11-26T15:44:07Z2016-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject3application/pdf2016 Ieee Sensors. New York: Ieee, 3 p., 2016.1930-0395http://hdl.handle.net/11449/159511WOS:000399395700010WOS000399395700010.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPeng2016 Ieee Sensors0,130info:eu-repo/semantics/openAccess2023-12-22T06:27:31Zoai:repositorio.unesp.br:11449/159511Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:03:28.921244Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Ozone sensing properties of nickel phthalocyanine:ZnO nanorod heterostructures
title Ozone sensing properties of nickel phthalocyanine:ZnO nanorod heterostructures
spellingShingle Ozone sensing properties of nickel phthalocyanine:ZnO nanorod heterostructures
Joshi, Nirav [UNESP]
Hydrothermal technique
heterostructures
Ozone
Gas sensing
title_short Ozone sensing properties of nickel phthalocyanine:ZnO nanorod heterostructures
title_full Ozone sensing properties of nickel phthalocyanine:ZnO nanorod heterostructures
title_fullStr Ozone sensing properties of nickel phthalocyanine:ZnO nanorod heterostructures
title_full_unstemmed Ozone sensing properties of nickel phthalocyanine:ZnO nanorod heterostructures
title_sort Ozone sensing properties of nickel phthalocyanine:ZnO nanorod heterostructures
author Joshi, Nirav [UNESP]
author_facet Joshi, Nirav [UNESP]
Shimizu, Flavio M. [UNESP]
Awan, Iram T. [UNESP]
M'Peko, Jean-Claude [UNESP]
Mastelaro, Valmor R. [UNESP]
Oliveira, Osvaldo N. [UNESP]
Silva, Luis F. da [UNESP]
IEEE
author_role author
author2 Shimizu, Flavio M. [UNESP]
Awan, Iram T. [UNESP]
M'Peko, Jean-Claude [UNESP]
Mastelaro, Valmor R. [UNESP]
Oliveira, Osvaldo N. [UNESP]
Silva, Luis F. da [UNESP]
IEEE
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Joshi, Nirav [UNESP]
Shimizu, Flavio M. [UNESP]
Awan, Iram T. [UNESP]
M'Peko, Jean-Claude [UNESP]
Mastelaro, Valmor R. [UNESP]
Oliveira, Osvaldo N. [UNESP]
Silva, Luis F. da [UNESP]
IEEE
dc.subject.por.fl_str_mv Hydrothermal technique
heterostructures
Ozone
Gas sensing
topic Hydrothermal technique
heterostructures
Ozone
Gas sensing
description We report on the chemiresistive gas sensing characteristics of ZnO nanorods (NRs) modified by a thin layer of nickel phthalocyanine (NiPc). Ozone detection was carried out through electrical measurements with an optimized performance at 250 degrees C, good reproducibility and suitable concentration range (from 80 to 890 ppb) for technological applications. The hybrid NiPc: ZnO films had superior performance to pure ZnO nanorods in terms of response time and sensitivity. The response times were 22 s and 26 s, respectively, whereas the ratio of resistances under ozone and air was 3.27 for NiPc: ZnO films and 2.56 for the pure ZnO NRs. The improvement in response time is attributed to the large surface area generated with the coating of the ZnO nanorods with the NiPc layer. Significantly, images taken with field-emission scanning electron microscopy (FE-SEM) indicated that the ZnO nanorods were fully covered with NiPc. X-ray diffraction measurements (XRD) revealed a preferential growth of the nanorod-like structures along the [100] direction. In summary, a successful approach has been developed to functionalize ZnO nanorods, which is promising for detection of ppb levels of ozone gas.
publishDate 2016
dc.date.none.fl_str_mv 2016-01-01
2018-11-26T15:44:07Z
2018-11-26T15:44:07Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv 2016 Ieee Sensors. New York: Ieee, 3 p., 2016.
1930-0395
http://hdl.handle.net/11449/159511
WOS:000399395700010
WOS000399395700010.pdf
identifier_str_mv 2016 Ieee Sensors. New York: Ieee, 3 p., 2016.
1930-0395
WOS:000399395700010
WOS000399395700010.pdf
url http://hdl.handle.net/11449/159511
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2016 Ieee Sensors
0,130
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 3
application/pdf
dc.publisher.none.fl_str_mv Ieee
publisher.none.fl_str_mv Ieee
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
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