RT info:eu-repo/semantics/article
T1 Silver hexacyanoferrate (II) nanocrystals as a new material to improve Raman scattering enhancement during silver surface oxidation
A1 Hernández Muñoz, Sheila
A1 Cheuquepan Valenzuela, William
A1 Pérez Estébanez, Martín
A1 Heras Vidaurre, Aránzazu
A1 Colina Santamaría, Álvaro
K1 Spectroelectrochemistry
K1 Raman
K1 EC-SERS
K1 EC-SOERS
K1 Electrochemistry
K1 Electroquímica
K1 Electrochemistry
K1 Química analítica
K1 Chemistry, Analytic
AB Raman spectroscopy is a powerful analysis technique that shows its full potential when a high amplification of the Raman signal is achieved. In this sense, Surface-Enhanced Raman scattering (SERS) has been the most widely used phenomenon for analysis. SERS provides the amplification of the Raman intensity due to the interaction of molecules with a plasmonic nanostructured surface. The enhancement of the Raman signal can be also obtained during the electrochemical oxidation of a metal electrode; this phenomenon was denoted as Electrochemical-Surface Oxidation Enhanced Raman Scattering (EC-SOERS) and yields a good Raman signal enhancement with high reproducibility. Until now, only chloride and bromide have been employed in EC-SOERS, using a silver electrode to generate silver chloride and silver bromide nanocrystals. In this work, a new EC-SOERS substrate based on the electrogeneration of silver hexacyanoferrate (II) nanocrystals is presented which provides a very sensitive Raman response. The electrogeneration of this new material can be easily followed using spectroelectrochemistry since the characteristic Raman bands of the nanocrystals lie outside of the fingerprint region used for the analysis where the detection of most of the target molecules is performed. Indigo Carmine has been selected as target molecule, obtaining a very good response at nanomolar level under Raman resonance and non-resonance conditions.
PB Elsevier
SN 0013-4686
YR 2023
FD 2023-10-10
LK http://hdl.handle.net/10259/9276
UL http://hdl.handle.net/10259/9276
LA eng
NO Authors acknowledge the financial support from Ministerio de Ciencia e Innovación and Agencia Estatal de Investigación (MCIN/AEI/10.13039/501100011033, PID2020–113154RB-C21), and Ministerio de Ciencia, Innovación y Universidades (RED2022–134120-T). S.H. thanks JCyL and European Social Fund for her postdoctoral fellowship and M.P.-E. thanks JCyL and European Social Fund for his predoctoral fellowship. W. Ch. acknowledges Junta de Castilla y León for his postdoctoral fellowship (Grant BU297P18) and funding received from European Union's Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No 101031622.
DS Repositorio Institucional de la Universidad de Burgos
RD 04-dic-2024