An Electrochemical Sensor for Determination of Bisphenol A Based on Reduced Graphene/Silver Nanoparticles Composites

VernacularTitle:基于还原石墨烯/纳米银复合材料的电化学传感器测定双酚A
Author: Jie TAN ¹ ; Xia Zhao SHI ; Fei Yu HU ; Hua Xiao XIAO ; Ke Gong LI
Author Information

1. 中山大学化学学院
Keywords: Reduced graphene/silver nanoparticles composites; Electrochemical determination; Bisphenol A
From: Chinese Journal of Analytical Chemistry 2017;45(12):2011-2017
CountryChina
Language:Chinese
Abstract: Graphene and silver nanoparticles showed good application potentials in electrochemistry due to their unique folded layered structure and good catalytic performance. In this work, reduced graphene oxide-Ag nanoparticles ( rGO/AgNPs ) composite material was prepared in situ by using hydrothermal reduction synthesis method with sodium citrate as reducing agent. The material was then used as modified electrodes to study the electrochemical behaviors of bisphenol A ( BPA) . The results of cyclic voltammetry and square wave voltammetry showed that the fast oxidation-reduction reaction of BPA could occur on the rGO/AgNPs modified glassy carbon electrode and lead to the sensitive determination of BPA. Under the optimal conditions, the oxidation current of BPA was linear to its concentration in the range of 0 . 1-40 . 0 μmol/L and the detection limit was 50 . 7 nmol/L ( S/N=3 ) . The presented method was also used for the determination of BPA in plastic samples with satisfactory results.