Disposable three-dimensional graphene oxide electrode with sandwich-like architecture for the determination of ascorbic acid in fruit juices

Página do item simplificado
dc.contributor.authorBuffon, Edervaldo [UNESP]
dc.contributor.authorStradiotto, Nelson Ramos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2023-07-29T16:04:59Z
dc.date.available2023-07-29T16:04:59Z
dc.date.issued2023-06-01
dc.description.abstractThis work reports the development of a three-dimensional graphene oxide structure on the screen-printed electrode surface for the detection of ascorbic acid. This electrode was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, RAMAN spectroscopy, cyclic voltammetry and electrochemical impedance spectroscopy. The present work also investigated the electrochemical behavior of ascorbic acid and its electrooxidation mechanism on the three-dimensional graphene oxide surface. The detection of ascorbic acid was conducted by linear scanning voltammetry in the concentration range from 1.0 × 10−5 to 1.0 × 10−2 mol L−1, and the limits of detection and quantification obtained for the proposed electrode were 3.4 × 10−6 and 1.1 × 10−5 mol L−1 (n = 3), respectively. The device also exhibited excellent selectivity, repeatability, reproducibility and stability. The methodology developed was applied for the determination of ascorbic acid in grape and orange juice samples with an accuracy rate ranging from 99% to 105%. These results show that the proposed electrode can be safely and reliably applied for the monitoring of ascorbic acid in fruit juices.en
dc.description.affiliationInstitute of Chemistry São Paulo State University (UNESP), São Paulo
dc.description.affiliationBioenergy Research Institute São Paulo State University (UNESP), São Paulo
dc.description.affiliationUnespInstitute of Chemistry São Paulo State University (UNESP), São Paulo
dc.description.affiliationUnespBioenergy Research Institute São Paulo State University (UNESP), São Paulo
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: #2017/22401–8
dc.description.sponsorshipIdFAPESP: #2019/13818–8
dc.identifierhttp://dx.doi.org/10.1016/j.mtcomm.2023.105535
dc.identifier.citationMaterials Today Communications, v. 35.
dc.identifier.doi10.1016/j.mtcomm.2023.105535
dc.identifier.issn2352-4928
dc.identifier.scopus2-s2.0-85147326411
dc.identifier.urihttp://hdl.handle.net/11449/249631
dc.language.isoeng
dc.relation.ispartofMaterials Today Communications
dc.sourceScopus
dc.subjectAscorbic acid
dc.subjectElectrochemical sensor
dc.subjectFruit juices
dc.subjectScreen-printed electrode
dc.subjectThree-dimensional graphene oxide
dc.titleDisposable three-dimensional graphene oxide electrode with sandwich-like architecture for the determination of ascorbic acid in fruit juicesen
dc.typeArtigo
unesp.author.orcid0000-0003-0981-5065 0000-0003-0981-5065[1]

Arquivos

Coleções

Artigos - Química Analítica - IQ