Hybrid layer-by-layer (LbL) films of polyaniline, graphene oxide and zinc oxide to detect ammonia
dc.contributor.author | Andre, Rafaela S. | |
dc.contributor.author | Shimizu, Flávio M. | |
dc.contributor.author | Miyazaki, Celina M. | |
dc.contributor.author | Riul, Antonio | |
dc.contributor.author | Manzani, Danilo [UNESP] | |
dc.contributor.author | Ribeiro, Sidney J.L. [UNESP] | |
dc.contributor.author | Oliveira, Osvaldo N. | |
dc.contributor.author | Mattoso, Luiz H.C. | |
dc.contributor.author | Correa, Daniel S. | |
dc.contributor.institution | Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) | |
dc.contributor.institution | Universidade Federal de São Carlos (UFSCar) | |
dc.contributor.institution | Universidade de São Paulo (USP) | |
dc.contributor.institution | Universidade Estadual de Campinas (UNICAMP) | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.date.accessioned | 2018-12-11T17:29:48Z | |
dc.date.available | 2018-12-11T17:29:48Z | |
dc.date.issued | 2017-01-01 | |
dc.description.abstract | 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. | en |
dc.description.affiliation | National Laboratory for Nanotechnology in Agribusiness (LNNA) Embrapa Instrumentation | |
dc.description.affiliation | Center for Exact Sciences and Technology Department of Chemistry Federal University of São Carlos (UFSCar) | |
dc.description.affiliation | São Carlos Institute of Physics (IFSC) University of São Paulo (USP), P.O. Box 369 | |
dc.description.affiliation | CCTS Federal University of São Carlos (UFSCar) | |
dc.description.affiliation | Institute of Physics Gleb Wataghin Unicamp | |
dc.description.affiliation | Institute of Chemistry São Paulo State University (UNESP) | |
dc.description.affiliationUnesp | Institute of Chemistry São Paulo State University (UNESP) | |
dc.description.sponsorship | Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) | |
dc.description.sponsorship | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | |
dc.description.sponsorship | Empresa Brasileira de Pesquisa Agropecuária | |
dc.description.sponsorship | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | |
dc.description.sponsorshipId | CNPq: 141894/2013-0 | |
dc.description.sponsorshipId | FAPESP: 2012/15543-7 | |
dc.description.sponsorshipId | FAPESP: 2012/23880-3 | |
dc.description.sponsorshipId | FAPESP: 2013/14262-7 | |
dc.description.sponsorshipId | FAPESP: 2014/16789-5 | |
dc.description.sponsorshipId | CNPq: 502391/2014-6 | |
dc.format.extent | 795-801 | |
dc.identifier | http://dx.doi.org/10.1016/j.snb.2016.07.099 | |
dc.identifier.citation | Sensors and Actuators, B: Chemical, v. 238, p. 795-801. | |
dc.identifier.doi | 10.1016/j.snb.2016.07.099 | |
dc.identifier.file | 2-s2.0-84990242939.pdf | |
dc.identifier.issn | 0925-4005 | |
dc.identifier.scopus | 2-s2.0-84990242939 | |
dc.identifier.uri | http://hdl.handle.net/11449/178328 | |
dc.language.iso | eng | |
dc.relation.ispartof | Sensors and Actuators, B: Chemical | |
dc.relation.ispartofsjr | 1,406 | |
dc.rights.accessRights | Acesso aberto | |
dc.source | Scopus | |
dc.subject | Ammonia sensor | |
dc.subject | Graphene oxide | |
dc.subject | Impedance spectroscopy | |
dc.subject | Nanostructured film | |
dc.subject | Polyaniline | |
dc.title | Hybrid layer-by-layer (LbL) films of polyaniline, graphene oxide and zinc oxide to detect ammonia | en |
dc.type | Artigo | |
unesp.author.orcid | 0000-0002-5592-0627 0000-0002-5592-0627[9] |
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