Electrochemical Determination of Bisphenol A on a Glassy Carbon Electrode Modified with Gold Nanoparticles Loaded on ReducedGraphene Oxide-Multi-Walled Carbon Nanotubes Composite
10.11895/j.issn.0253-3820.160768
- VernacularTitle:还原氧化石墨烯-多壁碳纳米管复合膜负载金纳米粒子修饰玻碳电极检测双酚A
- Author:
Hao YU
;
Xiao FENG
;
Xiaoxia CHEN
;
Jinli QIAO
;
Xiaoling GAO
;
Na XU
;
Loujun GAO
- Keywords:
Gold nanoparticles;
Reduced oxide graphene/multi-walled carbon nanotubes composite;
Electrochemical sensor;
Bisphenol A
- From:
Chinese Journal of Analytical Chemistry
2017;45(5):713-720
- CountryChina
- Language:Chinese
-
Abstract:
A glassy carbon electrode (GCE) modified with gold nanoparticles loading on the reduced graphene oxide (rGO)-multi-walled carbon nanotubes (MWCNTs) composite film was fabricated by a two-step procedure.Firstly, rGO-MWCNTs composite were prepared by in-situ chemical reduction method with hydrazine as a reducing agent.Then, AuNPs were deposited on the surface of rGO-MWCNTs using simple cyclic voltammetry.This modified electrode was characterized using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and electrochemical methods.Furthermore, the electrochemical behavior of bisphenol A (BPA) was also investigated using this modified electrode.The results showed that the modified electrode had high electrochemical activity for the oxidation of BPA.In 0.10 mol/L phosphate buffer solution (PBS, pH 7.0), the linear range for the determination of BPA with differential pulse voltammetry (DPV) was in the range of 5.0 × 10-9 -1.0 × 10-7 mol/L and 1.0 × 10-7-2.0 × 10-5 mol/L.The detection limit was 1.0 × 10-9 mol/L (S/N=3).The as-prepared modified electrode was successfully used to determine BPA in river water and the shopping receipt samples with recovery ranges of 97%-110% and 98%-104%, respectively.
