EC-SERS study of phenolic acids sorption behavior on Au, Ag and Cu substrates – Effect of applied potential and metal used

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F19%3A43919241" target="_blank" >RIV/60461373:22340/19:43919241 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0169433218331957?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0169433218331957?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apsusc.2018.11.120" target="_blank" >10.1016/j.apsusc.2018.11.120</a>

Jazyk výsledku

angličtina

Název v původním jazyce

EC-SERS study of phenolic acids sorption behavior on Au, Ag and Cu substrates – Effect of applied potential and metal used

Popis výsledku v původním jazyce

p-coumaric and ferulic acids are natural phenolic phytochemicals present in seeds and leaves usually in very low concentrations. For this reason, their detection and identification using traditional techniques of vibrational spectroscopy is problematic and requires the use of advanced methods to reduce the detection limit. Both p-coumaric and ferulic acids are significant for their antioxidant properties and other biological activities such as antiallergic, hepatoprotective, anticarcinogenic or modulation of enzyme activity. Surface-enhanced Raman scattering (SERS) spectroscopy appears a good tool for their study and detection. In SERS spectroscopy, the mechanism of analytes adsorption on the surface of a plasmonic metal substrate plays a key role, since the formation of a surface complex and its geometry fundamentally influences the enhancement of spectral response. This work was aimed at in-situ SERS spectroelectrochemical study of p-coumaric and ferulic acid showing the dependence on applied potential and changes in adsorption mechanism. The SERS spectra were collected at 785 nm excitation wavelength on gold, silver and copper rough electrodes. The applied potential significantly influences the orientation of the molecules towards the active sites of the metal substrate and their overall spatial arrangement on the surface in terms of the individual adsorption mechanisms. © 2018 Elsevier B.V.

Název v anglickém jazyce

EC-SERS study of phenolic acids sorption behavior on Au, Ag and Cu substrates – Effect of applied potential and metal used

Popis výsledku anglicky

p-coumaric and ferulic acids are natural phenolic phytochemicals present in seeds and leaves usually in very low concentrations. For this reason, their detection and identification using traditional techniques of vibrational spectroscopy is problematic and requires the use of advanced methods to reduce the detection limit. Both p-coumaric and ferulic acids are significant for their antioxidant properties and other biological activities such as antiallergic, hepatoprotective, anticarcinogenic or modulation of enzyme activity. Surface-enhanced Raman scattering (SERS) spectroscopy appears a good tool for their study and detection. In SERS spectroscopy, the mechanism of analytes adsorption on the surface of a plasmonic metal substrate plays a key role, since the formation of a surface complex and its geometry fundamentally influences the enhancement of spectral response. This work was aimed at in-situ SERS spectroelectrochemical study of p-coumaric and ferulic acid showing the dependence on applied potential and changes in adsorption mechanism. The SERS spectra were collected at 785 nm excitation wavelength on gold, silver and copper rough electrodes. The applied potential significantly influences the orientation of the molecules towards the active sites of the metal substrate and their overall spatial arrangement on the surface in terms of the individual adsorption mechanisms. © 2018 Elsevier B.V.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Surface Science

ISSN

0169-4332

e-ISSN

—

Svazek periodika

470

Číslo periodika v rámci svazku

-

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

716-723

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85057144280