2026-05-11T22:02:17Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/61252022-11-15T13:30:15Zcom_10259_3844com_10259_5086com_10259_2604col_10259_3845

Pérez Estébanez, Martín 777 500 Hernández Muñoz, Sheila 275 600 Perales Rondon, Juan Víctor 432 600 Gomez, Elvira 44b46d20-53b6-4f9e-9d39-d8c4689ca3ed 600 Heras Vidaurre, Aránzazu 273 600 Colina Santamaría, Álvaro 122 600 2021-11-08T13:37:04Z 2021-11-08T13:37:04Z 2020-09 0013-4686 http://hdl.handle.net/10259/6125 10.1016/j.electacta.2020.136560 Electrochemical Surface Oxidation Enhanced Raman Scattering (EC-SOERS) is an interesting and promising phenomenon capable of amplifying the Raman signal in a similar way to Surface Enhanced Raman Scattering (SERS), but EC-SOERS takes place during the oxidation of a silver substrate. This phenomenon was originally described for specific electrolytic conditions in which a small amount of chloride in acidic medium was mandatory to obtain a substantial enhancement. Herein, we demonstrate that EC-SOERS can be also observed in presence of KBr, showing a potential-dependent behavior. Moreover, in this work a novel approach to reach chemical selectivity during time resolved Raman spectroelectrochemistry (TR-Raman-SEC) experiments is proposed. This new approach is based on the effect of the electrolytic medium on the structures that are formed on the electrode surface. SEM studies were carried out to study the origin of this selectivity. Although SEM images reveal clear differences between the structures of silver halides formed on the electrode surface during the oxidation of the substrate, the absence of EC-SOERS effect at open circuit potential hinders the identification of the actual structures responsible for the phenomenon. Ministerio de Economía y Competitividad (Grants CTQ2017-83935-R-AEI/FEDERUE), Junta de Castilla y León (BU297P18) and Ministerio de Ciencia, Innovación y Universidades (RED2018-102412-T) application/pdf spa Elsevier Electrochimica Acta. 2020, V. 353, 136560 https://doi.org/10.1016/j.electacta.2020.136560 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2017-83935-R/ES/ESPECTROELECTROQUIMICA RAMAN CUANTITATIVA info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/ RED2018-102412-T/ES/RED DE SENSORES Y BIOSENSORES ELECTROQUIMICOS info:eu-repo/grantAgreement/Junta de Castilla y León//BU297P18 Spectroelectrochemistry Raman SERS EC-SOERS Silver roughening Química analítica Chemistry, Analytic Chemical selectivity in electrochemical surface oxidation enhanced Raman scattering info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion info:eu-repo/semantics/openAccess THUMBNAIL Perez-ea_2020.pdf.jpg Perez-ea_2020.pdf.jpg IM Thumbnail image/jpeg 3996 https://riubu.ubu.es/bitstream/10259/6125/3/Perez-ea_2020.pdf.jpg 2d90f651dec785f939f669dbd8ad143a MD5 3 LICENSE license.txt license.txt text/plain; charset=utf-8 999 https://riubu.ubu.es/bitstream/10259/6125/2/license.txt b295bcbce42e2caabeb0c623d3860c06 MD5 2 ORIGINAL Perez-ea_2020.pdf Perez-ea_2020.pdf application/pdf 2982232 https://riubu.ubu.es/bitstream/10259/6125/1/Perez-ea_2020.pdf 25849247ec9cb22c8d81a1fb29fa8ec2 MD5 1 10259/6125 oai:riubu.ubu.es:10259/6125 2022-11-15 14:30:15.956 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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