RT info:eu-repo/semantics/article
T1 Activating the SERS features of screen-printed electrodes with thiocyanate for sensitive and robust EC-SERS analysis
A1 Moldovan, Rebeca
A1 Pérez Estébanez, Martín
A1 Heras Vidaurre, Aránzazu
A1 Bodoki, Ede
A1 Colina Santamaría, Álvaro
K1 EC-SERS
K1 Spectroelectrochemistry
K1 Substrate activation
K1 Thiocyanate
K1 Sensor
K1 Propranolol
K1 Química analítica
K1 Chemistry, Analytic
K1 Electroquímica
K1 Electrochemistry
AB 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.
PB Elsevier
SN 0925-4005
YR 2024
FD 2024
LK http://hdl.handle.net/10259/10051
UL http://hdl.handle.net/10259/10051
LA eng
NO Ministerio de Ciencia e Innovación and Agencia Estatal de Investigación (MCIN/AEI/10.13039/501100011033, PID2020-113154RB-C21), Ministerio de Ciencia, Innovación y Universidades (RED2022-134120-T).
DS Repositorio Institucional de la Universidad de Burgos
RD 31-ene-2025