%0 Journal Article %T GO/PPy/Pb3O4修饰电极的制备及其在电化学传感中的应用<br>Preparation of the GO/PPy/Pb3O4 modified electrode for electrochemical sensing application %A 代洪秀 %A 王南 %A 艾克百江·艾麦尔 %A 林猛< %A br> %A DAI Hong-xiu %A WANG Nan %A AIMAIER·Aikebaijiang %A LIN Meng %J 山东大学学报（理学版） %D 2017 %R 10.6040/j.issn.1671-9352.0.2017.148 %X 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。<br>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 %K 氧化石墨烯 %K 四氧化三铅 %K 对苯二酚 %K 聚吡咯 %K 电化学传感器 %K < %K br> %K polypyrrole %K Pb< %K sub> %K 3< %K /sub> %K O< %K sub> %K 4< %K /sub> %K electrochemical sensor %K hydroquinone %K graphene oxide %U http://lxbwk.njournal.sdu.edu.cn/CN/10.6040/j.issn.1671-9352.0.2017.148