Novel ozone gas sensor based on ZnO nanostructures grown by the microwave-assisted hydrothermal route

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dc.contributor.authorRocha, L. S.R. [UNESP]
dc.contributor.authorFoschini, C. R. [UNESP]
dc.contributor.authorSilva, C. C. [UNESP]
dc.contributor.authorLongo, E. [UNESP]
dc.contributor.authorSimões, A. Z. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:26:28Z
dc.date.available2018-12-11T17:26:28Z
dc.date.issued2016-02-15
dc.description.abstractGood quality ZnO nanostructures were obtained by the microwave-assisted hydrothermal synthesis, at low reaction temperatures, using zinc acetate as the starting precursor. X-ray diffraction confirmed the crystallinity of the ZnO nanostructures, which resulted free of impurities. Field emission gun scanning electron microscopy analysis revealed that the ZnO nanostructures crystallized at 120 °C were more homogeneous and had a constant diameter along the entire wire length, exhibiting an ideal defect density that favors the gas sensing response. A new ozone gas sensor based on these nanostructures was evaluated at low exposure times (15 s) by recording the change in the film resistance. The ZnO nanostructures showed good sensitivity even at low ozone concentration (100 ppb), and fast response and short recovery time at 200 °C, demonstrating great potential for a variety of applications. Two main effects were observed: the first one is intrinsic to that of the sample, while the second is a consequence of the surface and interface complex cluster defects, which produce extrinsic defects.en
dc.description.affiliationUniversidade Estadual Paulista- Unesp-Faculdade de Engenharia de Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha, 333
dc.description.affiliationLaboratório Interdisciplinar em Cerâmica (LIEC) Departamento de Físico-Química UNESP
dc.description.affiliationUniversidade Estadual Paulista UNESP Dept. de Eng. Mecânica, Av. Eng. Luiz Edmundo C. Coube 14-01
dc.description.affiliationUnespUniversidade Estadual Paulista- Unesp-Faculdade de Engenharia de Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha, 333
dc.description.affiliationUnespLaboratório Interdisciplinar em Cerâmica (LIEC) Departamento de Físico-Química UNESP
dc.description.affiliationUnespUniversidade Estadual Paulista UNESP Dept. de Eng. Mecânica, Av. Eng. Luiz Edmundo C. Coube 14-01
dc.format.extent4539-4545
dc.identifierhttp://dx.doi.org/10.1016/j.ceramint.2015.11.145
dc.identifier.citationCeramics International, v. 42, n. 3, p. 4539-4545, 2016.
dc.identifier.doi10.1016/j.ceramint.2015.11.145
dc.identifier.file2-s2.0-84949844709.pdf
dc.identifier.issn0272-8842
dc.identifier.lattes1922357184842767
dc.identifier.orcid0000-0003-1300-4978
dc.identifier.scopus2-s2.0-84949844709
dc.identifier.urihttp://hdl.handle.net/11449/177647
dc.language.isoeng
dc.relation.ispartofCeramics International
dc.relation.ispartofsjr0,784
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectA. Powders: chemical preparation
dc.subjectB. Defects
dc.subjectD. ZnO
dc.subjectE. Sensors
dc.titleNovel ozone gas sensor based on ZnO nanostructures grown by the microwave-assisted hydrothermal routeen
dc.typeArtigo
unesp.author.lattes1922357184842767[2]
unesp.author.orcid0000-0003-1300-4978[2]

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