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dc.contributor.authorGarcía Hernández, Celia 
dc.contributor.authorGarcía Cabezón, Ana Cristina 
dc.contributor.authorRodríguez Méndez, María Luz 
dc.contributor.authorMartín Pedrosa, Fernando 
dc.date.accessioned2024-02-08T09:26:59Z
dc.date.available2024-02-08T09:26:59Z
dc.date.issued2024
dc.identifier.citationElectrochimica Acta Volume, 2024, vol. 476, 143717es
dc.identifier.issn0013-4686es
dc.identifier.urihttps://uvadoc.uva.es/handle/10324/65966
dc.descriptionProducción Científicaes
dc.description.abstractHalloysite nanotubes (HNTs) are excellent candidates to improve the immobilization of electroactive materials or enzymes due to their tubular structure and properties. In this work, an improved LbL based catechol sensor has been developed using a combination of sensing materials with complementary activity. These include sulfonated copper phthalocyanine (CuPcSO3−) acting as electrocatalytic material, poly(ethyleneimine) (PEI) to increase the charge injection efficiency and the increase of the surface provided by HNTs. The LbL film has been used as the sensing platform to deposit tyrosinase in order to further enhance the performance of the developed sensor towards catechol. The LbL films were characterized by using UV–Vis, FTIR and cyclic voltammetry. The limits of detection, repeatability and reproducibility of the sensors and the biosensor were evaluated. The limits of detection were 1.23 μmol·L−1 for the optimized (PEI/CuPcSO3−) sensor, 0.987 μmol·L−1 for the (PEI/HNT/PEI/CuPcSO3−) sensor and 0.938 μmol·L−1 for the (PEI/HNT/PEI/CuPcSO3−)-Tyrosinase sensor.es
dc.format.mimetypeapplication/pdfes
dc.language.isoenges
dc.publisherElsevieres
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectElectrochemistryes
dc.subjectQuímica analíticaes
dc.subject.classificationHalloysite nanotubeses
dc.subject.classificationCopper phthalocyaninees
dc.subject.classificationPolyethyleniminees
dc.subject.classificationNanotubos de halloysitaes
dc.subject.classificationFtalocianina de cobrees
dc.subject.classificationPolietileniminaes
dc.titleEffect of nanoclays on the electrochemical performance of LbL catechol sensorses
dc.typeinfo:eu-repo/semantics/articlees
dc.rights.holder© 2024 The Authorses
dc.identifier.doi10.1016/j.electacta.2023.143717es
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0013468623018856?via%3Dihubes
dc.identifier.publicationfirstpage143717es
dc.identifier.publicationtitleElectrochimica Actaes
dc.identifier.publicationvolume476es
dc.peerreviewedSIes
dc.description.projectMinisterio de Economía, Comercio y Empresa - FEDER (PID2021-122365OB-100)es
dc.description.projectJunta de Castilla y Leon- FEDER (VA202P20)es
dc.description.projectJunta de Castilla y Leon- FEDER (BIOECOUVA-CLU-2019-04)es
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersiones
dc.subject.unesco23 Químicaes


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