2026-06-30T03:24:25Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/48322021-11-10T09:38:18Zcom_10259_3844com_10259_5086com_10259_2604col_10259_3845

Perales Rondon, Juan Víctor Hernández Muñoz, Sheila Martin Yerga, Daniel . Fanjul Bolado, Pablo . Heras, Aránzazu Colina, Álvaro 2018-07-03T08:48:15Z 2018-08 2020-08 0013-4686 http://hdl.handle.net/10259/4832 10.1016/j.electacta.2018.06.079 In this work, an unexpected enhancement of the Raman signal for uric acid during the electrochemical oxidation of a silver electrode is presented. This behavior cannot be easily explained using classical models of Surface Enhanced Raman Scattering (SERS). Time resolved Raman spectroelectrochemistry is used to study this interesting process strongly dependent on the experimental conditions. The new phenomenon was observed in different molecules and was found to be reproducible and robust, allowing us to use this methodology for the determination of citric acid. The enhancement of the Raman signal only takes place when a potential is applied to the electrode and therefore, this new phenomenon can be denoted as Electrochemical Surface Oxidation Enhanced Raman Scattering (EC-SOERS). In this work, EC-SOERS is presented not only as an alternative to SERS for detection of molecules but also as a reproducible process that can be used for quantitative analysis. Ministerio de Economía y Competitividad (Grants CTQ2017-83935-R-AEI/FEDER-UE and CTQ2014-55583-R) and Junta de Castilla y León (Grant BU033-U16) application/pdf eng Elsevier Electrochimica Acta. 2018, V. 282, p. 377-383 https://doi.org/10.1016/j.electacta.2018.06.079 info:eu-repo/grantAgreement/MINECO/CTQ2017-83935-R-AEI/FEDER-UE info:eu-repo/grantAgreement/MINECO/CTQ2014-55583-R info:eu-repo/grantAgreement/JCyL/BU033-U16 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess SERS Silver roughening Raman spectroelectrochemistry PARAFAC Química analítica Chemistry, Analytic Electrochemical surface oxidation enhanced Raman scattering info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion