Citation:
YU Hao, FENG Xiao, CHEN Xiao-Xia, QIAO Jin-Li, GAO Xiao-Ling, XU Na, GAO Lou-Jun. Electrochemical Determination of Bisphenol A on a Glassy Carbon Electrode Modified with Gold Nanoparticles Loaded on Reduced Graphene Oxide-Multi-Walled Carbon Nanotubes Composite[J]. Chinese Journal of Analytical Chemistry,
;2017, 45(5): 713-720.
doi:
10.11895/j.issn.0253-3820.160768
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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.
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