JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) ›› 2017, Vol. 52 ›› Issue (9): 98-102.doi: 10.6040/j.issn.1671-9352.0.2017.148

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Preparation of the GO/PPy/Pb3O4 modified electrode for electrochemical sensing application

DAI Hong-xiu, WANG Nan, AIMAIER·Aikebaijiang, LIN Meng*   

  1. School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, Shandong, China
  • Received:2017-04-05 Online:2017-09-20 Published:2017-09-15

Abstract: This paper reported the preparation of an electrochemical hydroquinone sensor based on synthesized GO/PPy/Pb3O4 composites. Pyrrole monomer was in situ chemical polymerization on the surface of the graphene oxide by the π-π conjugation effect. Based on the GO/PPy nanocomposites, GO/PPy/Pb3O4 composites were fabricated by hydrothermal method. The structural features of the fabricated composites were confirmed by scanning electron microscopy(SEM), Fourier infrared(FTIR)and X-ray diffraction(XRD)characterization. The hydroquinone was studied with differential pulse voltammetry in the electrochemical behavior of the modified electrodes. Comparing different modified electrodes, the GO/PPy/Pb3O4 modified electrode showed good electrical conductivity and excellent electro-catalytic performance. The results showed that the electrochemical sensor had a good linear relationship between the hydroquinone concentrations and electrochemical peak currents in the range of 1.0-35 μg/L, the detection limit is 0.3 μg/L. In addition, the electrochemical sensor has good reproducibility and stability.

Key words: polypyrrole, Pb3O4, electrochemical sensor, hydroquinone, graphene oxide

CLC Number: 

  • O646
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