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Molecularly imprinted electrochemical sensor for monitoring mercaptan sulfur in aviation biofuel

dc.contributor.authorFalone, Max Fabrício [UNESP]
dc.contributor.authorBuffon, Edervaldo [UNESP]
dc.contributor.authorStradiotto, Nelson Ramos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-05-01T08:44:41Z
dc.date.available2022-05-01T08:44:41Z
dc.date.issued2022-01-01
dc.description.abstractThis work reports the development and application of a molecularly imprinted electrochemical sensor based on the electropolymerization of pyrrole film on glassy carbon electrode for monitoring mercaptan sulfur in aviation biofuel. To this end, butanethiol was used as a template molecule for the formation of imprinted cavities in the polypyrrole structure. The modified electrode was characterized by cyclic voltammetry, electrochemical impedance spectroscopy, scanning electron microscopy and energy dispersive X-ray spectroscopy. After the optimization of the experimental conditions, the sensor presented linear working ranges in the concentration range of 1.0 × 10−12 to 1.0 × 10−10 mol L−1. The values obtained for the amperometric sensitivity and the limits of detection and quantification of this device were 5.1 × 105 A L mol−1, 6.1 × 10−13 mol L−1, and 2.0 × 10−12 mol L−1, respectively. The proposed sensor showed excellent selectivity, remarkable repeatability and high stability for butanethiol detection. The proposed electroanalytical method was successfully applied in aviation biofuel sample where it exhibited recovery values between 98% and 107%, with relative standard deviation ranging from 1.1% to 4.1%. The results obtained show that the proposed sensor has good accuracy and can be successfully applied for monitoring mercaptan sulfur in aviation biofuel samples.en
dc.description.affiliationInstitute of Chemistry São Paulo State University (UNESP)
dc.description.affiliationBioenergy Research Institute São Paulo State University (UNESP)
dc.description.affiliationUnespInstitute of Chemistry São Paulo State University (UNESP)
dc.description.affiliationUnespBioenergy Research Institute São Paulo State University (UNESP)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.identifierhttp://dx.doi.org/10.1016/j.fuel.2021.121783
dc.identifier.citationFuel, v. 307.
dc.identifier.doi10.1016/j.fuel.2021.121783
dc.identifier.issn0016-2361
dc.identifier.scopus2-s2.0-85113729973
dc.identifier.urihttp://hdl.handle.net/11449/233443
dc.language.isoeng
dc.relation.ispartofFuel
dc.sourceScopus
dc.subjectAviation biokerosene
dc.subjectButanethiol
dc.subjectElectrochemical sensor
dc.subjectMolecularly imprinted polymer
dc.subjectPolypyrrole
dc.titleMolecularly imprinted electrochemical sensor for monitoring mercaptan sulfur in aviation biofuelen
dc.typeArtigopt
dspace.entity.typePublication
relation.isOrgUnitOfPublicationbc74a1ce-4c4c-4dad-8378-83962d76c4fd
relation.isOrgUnitOfPublication.latestForDiscoverybc74a1ce-4c4c-4dad-8378-83962d76c4fd
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentQuímica Analítica - IQARpt

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