Hybrid layer-by-layer (LbL) films of polyaniline, graphene oxide and zinc oxide to detect ammonia

Detalhes bibliográficos
Autor(a) principal: Andre, Rafaela S.
Data de Publicação: 2017
Outros Autores: Shimizu, Flávio M., Miyazaki, Celina M., Riul, Antonio, Manzani, Danilo [UNESP], Ribeiro, Sidney J.L. [UNESP], Oliveira, Osvaldo N., Mattoso, Luiz H.C., Correa, Daniel S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.snb.2016.07.099
http://hdl.handle.net/11449/178328
Resumo: Reliable gas sensors operating at room temperature are in demand for monitoring the environment for hazardous pollutants, such as ammonia (NH3) gas that may become toxic to humans and animals above a threshold concentration. In this paper we report on the combination of three materials, namely polyaniline (PANI), graphene oxide (GO) and zinc oxide (ZnO), to produce hybrid layer-by-layer (LbL) films used for sensing NH3 with impedance spectroscopy measurements. The deposition of tetralayered PANI/GO/PANI/ZnO LbL films was confirmed with UV–vis. absorption and Raman spectroscopies, while atomic force microscopy (AFM) served to investigate film morphology. Exposure of these LbL films to NH3 caused film roughness to vary, in an effect that depended on the number of tetralayers. Because of synergy in the materials properties, the films with 3 tetralayers were found to be the most adequate for detecting NH3 in the range from 25 ppm to 500 ppm with a response time of 30 s. These figures of merit are adequate for monitoring working environments regarding gas exposure, and highlight the usefulness of the control of film architecture provided by the LbL technique.
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spelling Hybrid layer-by-layer (LbL) films of polyaniline, graphene oxide and zinc oxide to detect ammoniaAmmonia sensorGraphene oxideImpedance spectroscopyNanostructured filmPolyanilineReliable gas sensors operating at room temperature are in demand for monitoring the environment for hazardous pollutants, such as ammonia (NH3) gas that may become toxic to humans and animals above a threshold concentration. In this paper we report on the combination of three materials, namely polyaniline (PANI), graphene oxide (GO) and zinc oxide (ZnO), to produce hybrid layer-by-layer (LbL) films used for sensing NH3 with impedance spectroscopy measurements. The deposition of tetralayered PANI/GO/PANI/ZnO LbL films was confirmed with UV–vis. absorption and Raman spectroscopies, while atomic force microscopy (AFM) served to investigate film morphology. Exposure of these LbL films to NH3 caused film roughness to vary, in an effect that depended on the number of tetralayers. Because of synergy in the materials properties, the films with 3 tetralayers were found to be the most adequate for detecting NH3 in the range from 25 ppm to 500 ppm with a response time of 30 s. These figures of merit are adequate for monitoring working environments regarding gas exposure, and highlight the usefulness of the control of film architecture provided by the LbL technique.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Empresa Brasileira de Pesquisa AgropecuáriaFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)National Laboratory for Nanotechnology in Agribusiness (LNNA) Embrapa InstrumentationCenter for Exact Sciences and Technology Department of Chemistry Federal University of São Carlos (UFSCar)São Carlos Institute of Physics (IFSC) University of São Paulo (USP), P.O. Box 369CCTS Federal University of São Carlos (UFSCar)Institute of Physics Gleb Wataghin UnicampInstitute of Chemistry São Paulo State University (UNESP)Institute of Chemistry São Paulo State University (UNESP)CNPq: 141894/2013-0FAPESP: 2012/15543-7FAPESP: 2012/23880-3FAPESP: 2013/14262-7FAPESP: 2014/16789-5CNPq: 502391/2014-6Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Universidade Federal de São Carlos (UFSCar)Universidade de São Paulo (USP)Universidade Estadual de Campinas (UNICAMP)Universidade Estadual Paulista (Unesp)Andre, Rafaela S.Shimizu, Flávio M.Miyazaki, Celina M.Riul, AntonioManzani, Danilo [UNESP]Ribeiro, Sidney J.L. [UNESP]Oliveira, Osvaldo N.Mattoso, Luiz H.C.Correa, Daniel S.2018-12-11T17:29:48Z2018-12-11T17:29:48Z2017-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article795-801application/pdfhttp://dx.doi.org/10.1016/j.snb.2016.07.099Sensors and Actuators, B: Chemical, v. 238, p. 795-801.0925-4005http://hdl.handle.net/11449/17832810.1016/j.snb.2016.07.0992-s2.0-849902429392-s2.0-84990242939.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSensors and Actuators, B: Chemical1,406info:eu-repo/semantics/openAccess2023-12-07T06:17:15Zoai:repositorio.unesp.br:11449/178328Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:42:04.620244Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Hybrid layer-by-layer (LbL) films of polyaniline, graphene oxide and zinc oxide to detect ammonia
title Hybrid layer-by-layer (LbL) films of polyaniline, graphene oxide and zinc oxide to detect ammonia
spellingShingle Hybrid layer-by-layer (LbL) films of polyaniline, graphene oxide and zinc oxide to detect ammonia
Andre, Rafaela S.
Ammonia sensor
Graphene oxide
Impedance spectroscopy
Nanostructured film
Polyaniline
title_short Hybrid layer-by-layer (LbL) films of polyaniline, graphene oxide and zinc oxide to detect ammonia
title_full Hybrid layer-by-layer (LbL) films of polyaniline, graphene oxide and zinc oxide to detect ammonia
title_fullStr Hybrid layer-by-layer (LbL) films of polyaniline, graphene oxide and zinc oxide to detect ammonia
title_full_unstemmed Hybrid layer-by-layer (LbL) films of polyaniline, graphene oxide and zinc oxide to detect ammonia
title_sort Hybrid layer-by-layer (LbL) films of polyaniline, graphene oxide and zinc oxide to detect ammonia
author Andre, Rafaela S.
author_facet Andre, Rafaela S.
Shimizu, Flávio M.
Miyazaki, Celina M.
Riul, Antonio
Manzani, Danilo [UNESP]
Ribeiro, Sidney J.L. [UNESP]
Oliveira, Osvaldo N.
Mattoso, Luiz H.C.
Correa, Daniel S.
author_role author
author2 Shimizu, Flávio M.
Miyazaki, Celina M.
Riul, Antonio
Manzani, Danilo [UNESP]
Ribeiro, Sidney J.L. [UNESP]
Oliveira, Osvaldo N.
Mattoso, Luiz H.C.
Correa, Daniel S.
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
Universidade Federal de São Carlos (UFSCar)
Universidade de São Paulo (USP)
Universidade Estadual de Campinas (UNICAMP)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Andre, Rafaela S.
Shimizu, Flávio M.
Miyazaki, Celina M.
Riul, Antonio
Manzani, Danilo [UNESP]
Ribeiro, Sidney J.L. [UNESP]
Oliveira, Osvaldo N.
Mattoso, Luiz H.C.
Correa, Daniel S.
dc.subject.por.fl_str_mv Ammonia sensor
Graphene oxide
Impedance spectroscopy
Nanostructured film
Polyaniline
topic Ammonia sensor
Graphene oxide
Impedance spectroscopy
Nanostructured film
Polyaniline
description Reliable gas sensors operating at room temperature are in demand for monitoring the environment for hazardous pollutants, such as ammonia (NH3) gas that may become toxic to humans and animals above a threshold concentration. In this paper we report on the combination of three materials, namely polyaniline (PANI), graphene oxide (GO) and zinc oxide (ZnO), to produce hybrid layer-by-layer (LbL) films used for sensing NH3 with impedance spectroscopy measurements. The deposition of tetralayered PANI/GO/PANI/ZnO LbL films was confirmed with UV–vis. absorption and Raman spectroscopies, while atomic force microscopy (AFM) served to investigate film morphology. Exposure of these LbL films to NH3 caused film roughness to vary, in an effect that depended on the number of tetralayers. Because of synergy in the materials properties, the films with 3 tetralayers were found to be the most adequate for detecting NH3 in the range from 25 ppm to 500 ppm with a response time of 30 s. These figures of merit are adequate for monitoring working environments regarding gas exposure, and highlight the usefulness of the control of film architecture provided by the LbL technique.
publishDate 2017
dc.date.none.fl_str_mv 2017-01-01
2018-12-11T17:29:48Z
2018-12-11T17:29:48Z
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.2016.07.099
Sensors and Actuators, B: Chemical, v. 238, p. 795-801.
0925-4005
http://hdl.handle.net/11449/178328
10.1016/j.snb.2016.07.099
2-s2.0-84990242939
2-s2.0-84990242939.pdf
url http://dx.doi.org/10.1016/j.snb.2016.07.099
http://hdl.handle.net/11449/178328
identifier_str_mv Sensors and Actuators, B: Chemical, v. 238, p. 795-801.
0925-4005
10.1016/j.snb.2016.07.099
2-s2.0-84990242939
2-s2.0-84990242939.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 795-801
application/pdf
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
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