2026-04-23T03:26:57Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/100512025-07-28T07:28:59Zcom_10259_3844com_10259_5086com_10259_2604col_10259_3845
Repositorio Institucional de la Universidad de Burgos
author
Moldovan, Rebeca
author
Pérez Estébanez, Martín
author
Heras Vidaurre, Aránzazu
author
Bodoki, Ede
author
Colina Santamaría, Álvaro
2025-01-29T07:34:37Z
2025-01-29T07:34:37Z
2024
0925-4005
http://hdl.handle.net/10259/10051
10.1016/j.snb.2024.135468
1873-3077
This study presents a novel electrochemical (EC) methodology for activating the SERS features of disposable silver screen-printed electrodes (AgSPEs) using a pseudohalide as a precipitating agent to guide the assembly of a nano-filamentous silver network responsible for a strong SERS enhancement. To the best of our knowledge, the use of thiocyanate for SPEs activation for quantitative purposes has not been reported before. In order to better study this complex system, time-resolved (TR) operando spectroelectrochemistry (SEC) measurements were performed by SERS and UV-Vis and correlated with SEM imaging of the electrode surface at different steps. Moreover, to significantly increase the reproducibility of the assays, a rapid EC protocol was proposed for the first time to obtain a reliable Ag/AgSCN reference electrode (RE) and a comprehensive optimization process was conducted to determine the critical parameters. Additionally, propranolol, as an emerging pharmaceutical pollutant has been selected as a model molecule to demonstrate the applicability of the method for rapid (3 min) quantitative analysis in the nM range from real river and tap water samples.
eng
Atribución 4.0 Internacional
EC-SERS
Spectroelectrochemistry
Substrate activation
Thiocyanate
Sensor
Propranolol
Activating the SERS features of screen-printed electrodes with thiocyanate for sensitive and robust EC-SERS analysis
info:eu-repo/semantics/article
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URL
https://riubu.ubu.es/bitstream/10259/10051/1/Moldovan-sabc_2024.pdf
File
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Moldovan-sabc_2024.pdf