Flexible room-temperature volatile organic compound sensors based on reduced graphene oxide-WO3·0.33H2O nano-needles

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dc.contributor.authorPerfecto, Tarcísio M. [UNESP]
dc.contributor.authorZito, Cecilia A. [UNESP]
dc.contributor.authorMazon, Talita
dc.contributor.authorVolanti, Diogo P. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionCenter for Information Technology Renato Archer (CTI)
dc.date.accessioned2018-12-11T16:52:24Z
dc.date.available2018-12-11T16:52:24Z
dc.date.issued2018-01-01
dc.description.abstractFlexible sensors have attracted significant attention due to their currently desirable properties and possibility to be applied to any surface and conditions such as wearable electronic devices. Therefore, we prepared volatile organic compound (VOC) sensors based on WO3·0.33H2O nano-needles and their composites with reduced graphene oxide (RGO) on flexible polyethylene terephthalate (PET) substrates. The materials were synthesized via a combination of the ultrasonic spray nozzle (USN) and microwave-assisted hydrothermal (MAH) methods to obtain a single WO3·0.33H2O orthorhombic crystalline phase. The VOC sensing properties of the materials deposited on PET electrodes were studied at room temperature (22 °C) and 55% relative humidity. The materials were exposed to acetone, ethanol, isopropanol, acetic acid, and methanol to determine their selectivity. The materials exhibited a good selectivity for isopropanol. The 5%RGO-WO3·0.33H2O composite presented a superior isopropanol-sensing performance, with a response of 4.96 to 100 ppm, which was ∼1.6 times higher than that of the pure WO3·0.33H2O nano-needles. The materials behaved as p-type semiconductors due to an inversion of the sensitive layer promoted by the adsorption of water molecules on the surface of the material.en
dc.description.affiliationLaboratory of Materials for Sustainability (LabMatSus) Ibilce São Paulo State University (Unesp), R. Cristóvão Colombo, 2265
dc.description.affiliationCenter for Information Technology Renato Archer (CTI), Rod. D. Pedro I, KM 143, 6
dc.description.affiliationUnespLaboratory of Materials for Sustainability (LabMatSus) Ibilce São Paulo State University (Unesp), R. Cristóvão Colombo, 2265
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 2013/23886-4
dc.description.sponsorshipIdFAPESP: 2016/04371-1
dc.description.sponsorshipIdFAPESP: 2016/25267-8
dc.description.sponsorshipIdFAPESP: 2017/01267-1
dc.description.sponsorshipIdCNPq: 444926/2014-3
dc.format.extent2822-2829
dc.identifierhttp://dx.doi.org/10.1039/c8tc00324f
dc.identifier.citationJournal of Materials Chemistry C, v. 6, n. 11, p. 2822-2829, 2018.
dc.identifier.doi10.1039/c8tc00324f
dc.identifier.issn2050-7526
dc.identifier.issn2050-7534
dc.identifier.lattes2354739980406725
dc.identifier.orcid0000-0001-9315-9392
dc.identifier.scopus2-s2.0-85044065035
dc.identifier.urihttp://hdl.handle.net/11449/170786
dc.language.isoeng
dc.relation.ispartofJournal of Materials Chemistry C
dc.relation.ispartofsjr1,917
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.titleFlexible room-temperature volatile organic compound sensors based on reduced graphene oxide-WO3·0.33H2O nano-needlesen
dc.typeArtigo
unesp.author.lattes2354739980406725[4]
unesp.author.orcid0000-0001-9315-9392[4]

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