Citation: CUI Min, REN Ju-Jie, XING Yi-Fei, ZHANG Cong, LI Na, YU Xu-Dong, JI Xue-Ping. An Electrochemical Sensor Based on Palladium-Copper Nanoparticles/Three-Dimensional Reduced Graphene Oxide for Detection of p-Nitrophenol[J]. Chinese Journal of Analytical Chemistry, ;2019, 47(4): 605-612. doi: 10.19756/j.issn.0253-3820.181623 shu

An Electrochemical Sensor Based on Palladium-Copper Nanoparticles/Three-Dimensional Reduced Graphene Oxide for Detection of p-Nitrophenol

CUI Min ^1, ,
REN Ju-Jie ¹ ,
XING Yi-Fei ¹ ,
ZHANG Cong ¹ ,
LI Na ¹ ,
YU Xu-Dong ¹ ,
JI Xue-Ping ²

1.
Department of Chemistry, School of Sciences, Hebei University of Science and Technology, Shijiazhuang 050018, China;
2.
Department of Medical Chemistry, Hebei Medical University, Shijiazhuang 050017, China

Received Date: 30 September 2018
Revised Date: 2 February 2019

Fund Project: This work was supported by the National Natural Science Foundation of China (No. 81872669), the Research Foundation of Education Department of Hebei Province of China (No. ZD2018037) and the Doctoral Starting up Foundation of Hebei University of Science and Technology, China (No. 1181157).

An electrochemical sensor based on palladium-copper nanoparticles/three-dimensional reduced graphene oxide ([PdCu/3DRGO]) was constructed for detection of a p-nitrophenol (4-NP) with wide detection range and high stability.[PdCu/3DRGO] were synthesized by hydrothermal method using a solution containing palladium ions, copper ions and graphene oxide, which were characterized by scanning electron microscope (SEM), X-ray diffration (XRD), energy dispersive spectroscopy (EDS) and Fourier transform infrared spectroscopy (FT-IR). As-made composite was dropped on the surface of glassy carbon electrode to make the modified electrode ([PdCu/3DRGO]/GCE), of which electrochemical behavior was characterized by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Under the optimized experimental conditions, the modified electrode was used to detect 4-NP using differential pulse voltammetry (DPV) and current-time curve (i-t). The limit of detection was 0.050 μmol/L(S/N=3), the sensitivity was 0.372 μA/(μmol/L cm²), and the linear range was 10-3000 μmol/L. The sensor represented good stability and strong anti-interference performance which the common inorganic ions and structural analogues in water did not interfere with the determination of 4-NP.
- Electrochemical sensor,
- p-Nitrophenol,
- Palladium-copper nanoparticles,
- Reduced graphene oxide
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