RT info:eu-repo/semantics/article
T1 Improving the performance of electrochemical sensors by means of synergy. Combinations of gold nanoparticles and phthalocyanines
A1 Rodríguez Méndez, María Luz
A1 Ruiz Carmuega, Ana Isabel
A1 Sastre Santos, Ángela
A1 Ortiz, Javier
A1 García Hernández, Celia
A1 García Cabezón, Ana Cristina
K1 Electrochemical sensor
K1 Phthalocyanine
K1 Gold nanoparticle
K1 Catechol
K1 23 Química
K1 2303 Química Inorgánica
AB Voltammetric sensors chemically modified with combinations of two electrocatalytic materials: tetraoctylammonium bromide capped gold nanoparticles (AuNPNBr) and a sulphur containing zinc phthalocyanine derivative (ZnPcRS) are reported. The electrocatalytic effects in the detection of catechol have been analyzed in sensors obtained by direct mixing (AuNPNBr/ZnPcRS) and in sensors modified with an adduct where both components are linked covalently (AuNPNBr-S-ZnPcR). Results demonstrate that the nature of the interaction between both components modifies the electrocatalytic properties. The AuNPNBr/ZnPcRS mixture improves the electron transfer rate of the catechol reduction, with limits of detection of 10−6 M. The covalent adduct AuNPNBr-S-ZnPcR enhances the response rate of the oxidation of the catechol with limits of detection of 10−7 M.
PB MDPI
YR 2017
FD 2017
LK https://uvadoc.uva.es/handle/10324/56799
UL https://uvadoc.uva.es/handle/10324/56799
LA eng
NO Proceedings,  2017, vol.1, n. 4, p. 413
NO Producción Científica
DS UVaDOC
RD 21-may-2024