Logotipo do repositório
 

Publicação:
Impedance spectroscopy analysis of TiO(2) thin film gas sensors obtained from water-based anatase colloids

Página do item simplificado
dc.contributor.authorPonce, M. A.
dc.contributor.authorParra, R. [UNESP]
dc.contributor.authorSavu, R. [UNESP]
dc.contributor.authorJoanni, E. [UNESP]
dc.contributor.authorBueno, Paulo Roberto [UNESP]
dc.contributor.authorCilense, M. [UNESP]
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.authorCastro, M. S.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Nacl Mar del Plata
dc.date.accessioned2014-05-20T15:32:32Z
dc.date.available2014-05-20T15:32:32Z
dc.date.issued2009-06-04
dc.description.abstractIn this work impedance spectroscopy technique was employed in order to characterize the gas-sensing behavior of undoped titanium dioxide(TiO(2)) polycrystalline thin films. The electrical measurements were performed in a sensor-testing chamber that allows independent control of temperature, pressure, gas composition and flow rate. Frequency measurements, in the range from 40 Hz to 110 MHz,were performed in order to evaluate the gas sensor response of the samples as a function of temperature (50-350 degrees C) and surrounding atmosphere (vacuum Or air at atmospheric pressure). Impedance spectroscopy is a very useful and important technique clue to the possibility of using this method for discriminating between grain boundary capacitance (C(gb)) and grain boundary resistance (R(gb)) contributions. Therefore, a simple model taking into account variations in the intergranular potential barriers is proposed in this work. (C) 2009 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista UNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationUniv Nacl Mar del Plata, CONICET, Inst Mat Sci & Technol INTEMA, Mar Del Plata, Argentina
dc.description.affiliationUnespUniv Estadual Paulista UNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil
dc.description.sponsorshipConsejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent447-452
dc.identifierhttp://dx.doi.org/10.1016/j.snb.2009.03.066
dc.identifier.citationSensors and Actuators B-chemical. Lausanne: Elsevier B.V. Sa, v. 139, n. 2, p. 447-452, 2009.
dc.identifier.doi10.1016/j.snb.2009.03.066
dc.identifier.issn0925-4005
dc.identifier.lattes0477045906733254
dc.identifier.lattes9128353103083394
dc.identifier.orcid0000-0003-2827-0208
dc.identifier.urihttp://hdl.handle.net/11449/41413
dc.identifier.wosWOS:000267159700030
dc.language.isoeng
dc.publisherElsevier B.V. Sa
dc.relation.ispartofSensors and Actuators B: Chemical
dc.relation.ispartofjcr5.667
dc.relation.ispartofsjr1,406
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectTitanium oxideen
dc.subjectThin filmsen
dc.subjectGas sensoren
dc.subjectImpedance spectroscopyen
dc.titleImpedance spectroscopy analysis of TiO(2) thin film gas sensors obtained from water-based anatase colloidsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V. Sa
dspace.entity.typePublication
unesp.author.lattes0477045906733254[5]
unesp.author.lattes9128353103083394
unesp.author.orcid0000-0003-2827-0208[5]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentFísico-Química - IQARpt

Arquivos

Licença do Pacote

Agora exibindo 1 - 2 de 2
Imagem de Miniatura
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Imagem de Miniatura
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Araraquara - IQAR - Instituto de Química