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山东大学学报（理学版） ›› 2017, Vol. 52 ›› Issue (9): 98-102.doi: 10.6040/j.issn.1671-9352.0.2017.148

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GO/PPy/Pb3O4修饰电极的制备及其在电化学传感中的应用

代洪秀,王南,艾克百江·艾麦尔,林猛*   

  1. 山东大学化学与化工学院, 山东 济南 250100
  • 收稿日期:2017-04-05 出版日期:2017-09-20 发布日期:2017-09-15
  • 通讯作者: 林猛(1984— ),男,博士,副研究员,研究方向为微纳材料、电化学传感器.E-mail: mlin@sdu.edu.cn E-mail:957866948@qq.com
  • 作者简介:代洪秀(1989— ),女,博士研究生,研究方向为新型纳米材料、电化学传感器.E-mail: 957866948@qq.com
  • 基金资助:
    山东大学基本科研业务费资助(2015HW019)

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

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摘要： 通过制备氧化石墨烯/聚吡咯/四氧化三铅(GO/PPy/Pb3O4)复合材料,用于构建电化学传感器,以实现对对苯二酚的电化学检测。通过利用π-π共轭效应,实现吡咯单体在氧化石墨烯表面的原位聚合。以GO/PPy纳米复合材料为基底,通过水热反应制备得到具有微/纳结构的GO/PPy/Pb3O4复合材料。以扫描电镜(SEM),傅里叶红外(FTIR)和X射线衍射(XRD)等对复合材料进行表征,用差分脉冲伏安法研究对苯二酚在修饰电极上的电化学行为。通过对比不同修饰电极的电化学传感性能,发现GO/PPy/Pb3O4修饰电极展示了良好的导电性和优异的电催化性能。结果表明,该电化学传感器在1.0~35 μg/L范围内与其氧化峰电流呈良好的线性关系,其检测限为0.3 μg/L。此外,该电化学传感器还具有良好的重现性和稳定性。

关键词: 氧化石墨烯, 四氧化三铅, 对苯二酚, 聚吡咯, 电化学传感器

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

中图分类号: 

  • O646
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