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dc.contributor.authorMartin Yerga, Daniel .
dc.contributor.authorPérez Junquera, Alejandro .
dc.contributor.authorGonzález García, Maria Begoña .
dc.contributor.authorPerales Rondon, Juan Víctor 
dc.contributor.authorHeras, Aránzazu 
dc.contributor.authorColina, Álvaro 
dc.contributor.authorHernández Santos, David .
dc.contributor.authorFanjul Bolado, Pablo .
dc.date.accessioned2018-09-12T11:39:21Z
dc.date.issued2018-02
dc.identifier.issn0013-4686
dc.identifier.urihttp://hdl.handle.net/10259/4935
dc.description.abstractSurface enhanced Raman scattering (SERS) is a powerful technique based on the intensification of the Raman signal because of the interaction of a molecule with a nanostructured metal surface. Electrochemically roughened silver has been widely used as SERS substrate in the qualitative detection of analytes at the ultra-trace level. However, its potential for quantitative analysis has not been widely exploited yet. In this work, the combination of time-resolved Raman spectroelectrochemistry with silver screen-printed electrodes (SPE) is proposed as a novel methodology for the preparation of SERS substrates. The in situ activation of a SERS substrate is performed simultaneously with the analytical detection of a probe molecule, controlling the process related to the preparation of the substrate and performing the analytical measurement in real time. The results show the good performance of silver SPE as electrochemically-induced surface-enhanced Raman scattering substrates. Raman spectra were recorded at fairly low integration times (250 ms), obtaining useful spectroelectrochemical information of the processes occurring at the SPE surface with excellent time-resolution. By recording the microscopic surface images at different times during the experiment, we correlated the different data obtained: structural, optical and electrochemical. Finally, the in situ activation process was used to obtain a suitable in situ SERS signal for ferricyanide and tris(bipyridine)ruthenium (II) quantification. The detection of the analytes at concentrations of a few tens of nM was possible with a low integration time (2 s) and good precision, demonstrating the exceptional performance of the Raman spectroelectrochemical method and the possibility to use cost-effective screen-printed electrodes for applications where a high sensitivity is needed.en
dc.description.sponsorshipMinisterio de Economía y Competitividad (CTQ2017-83935-R, CTQ2014-55583-R, TEC2014-51940-C2-2R, CTQ2015-71955-REDT) and Junta de Castilla y León (BU033-U16)en
dc.format.mimetypeapplication/pdf
dc.language.isoenges
dc.publisherElsevieren
dc.relation.ispartofElectrochimica Acta. 2018 V. 264, p. 183-190
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectSurface-enhanced Raman scatteringen
dc.subjectScreen-printed electrodesen
dc.subjectElectrochemistryen
dc.subjectRaman spectroelectrochemistryen
dc.subject.otherQuímica analíticaes
dc.subject.otherChemistry, Analyticen
dc.titleQuantitative Raman spectroelectrochemistry using silver screen-printed electrodesen
dc.typeArtículoes
dc.typeinfo:eu-repo/semantics/article
dc.date.embargo2020-02-20
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.relation.publisherversionhttps://doi.org/10.1016/j.electacta.2018.01.060
dc.identifier.doi10.1016/j.electacta.2018.01.060
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/CTQ2017-83935-R
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/CTQ2014-55583-R
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/TEC2014-51940-C2-2R
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/CTQ2015-71955-REDT
dc.relation.projectIDinfo:eu-repo/grantAgreement/JCyL/BU033-U16
dc.type.hasVersioninfo:eu-repo/semantics/acceptedVersionen


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