Ozone sensing properties of nickel phthalocyanine:ZnO nanorod heterostructures
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1109/ICSENS.2016.7808407 http://hdl.handle.net/11449/220779 |
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°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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Ozone sensing properties of nickel phthalocyanine:ZnO nanorod heterostructuresGas sensingheterostructuresHydrothermal techniqueOzoneWe 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°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.IFSC Institute of Physics São Paulo State UniversityLIEC Institute of Chemistry São Paulo State UniversityIFSC Institute of Physics São Paulo State UniversityLIEC Institute of Chemistry São Paulo State UniversityUniversidade 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]Da Silva, Luís F. [UNESP]2022-04-28T19:05:25Z2022-04-28T19:05:25Z2017-01-05info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://dx.doi.org/10.1109/ICSENS.2016.7808407Proceedings of IEEE Sensors.2168-92291930-0395http://hdl.handle.net/11449/22077910.1109/ICSENS.2016.78084072-s2.0-85010943909Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProceedings of IEEE Sensorsinfo:eu-repo/semantics/openAccess2022-04-28T19:05:25Zoai:repositorio.unesp.br:11449/220779Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T19:05:25Repositório 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] Gas sensing heterostructures Hydrothermal technique Ozone |
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] Da Silva, Luís F. [UNESP] |
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] Da Silva, Luís F. [UNESP] |
author2_role |
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] Da Silva, Luís F. [UNESP] |
dc.subject.por.fl_str_mv |
Gas sensing heterostructures Hydrothermal technique Ozone |
topic |
Gas sensing heterostructures Hydrothermal technique Ozone |
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°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 |
2017 |
dc.date.none.fl_str_mv |
2017-01-05 2022-04-28T19:05:25Z 2022-04-28T19:05:25Z |
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 |
http://dx.doi.org/10.1109/ICSENS.2016.7808407 Proceedings of IEEE Sensors. 2168-9229 1930-0395 http://hdl.handle.net/11449/220779 10.1109/ICSENS.2016.7808407 2-s2.0-85010943909 |
url |
http://dx.doi.org/10.1109/ICSENS.2016.7808407 http://hdl.handle.net/11449/220779 |
identifier_str_mv |
Proceedings of IEEE Sensors. 2168-9229 1930-0395 10.1109/ICSENS.2016.7808407 2-s2.0-85010943909 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Proceedings of IEEE Sensors |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus 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_ |
1799965737797812224 |