水热法制备纳米片状氧化镍及其对葡萄糖的电化学检测

摘要

NiOnanoflake was prepared by hydrothermal method using polyethylene glycol as surfactant and used for electrochemical detection of glucose .The structure and morphology of the as -prepared products were characterized by X-ray diffraction(XRD) and transmission electron microscope (TEM).The TEM images showed that the synthesized NiO was ultrathin nanoflake with size about 50nm.The electrochemical behavior of NiOnanoflake in NaOH solution were studied by cyclic voltammetry ( CV ) . The results show that the electrode exhibits good electrocatalytic activity toward the oxidation of glucose . The linear range for the determination of glucose is 2 .58 ×10 -6 -7 .71 ×10 -3 mol/L with a detection limit of 0.5 μmol/L(S/N=3).%以聚乙二醇为表面活性剂，采用水热法制备纳米片状NiO，并用于电化学检测葡萄糖。通过X射线衍射（ XRD）和透射电镜（ TEM）分别对所得产物的结构和形貌进行表征。 TEM结果表明，所得产物为超薄片状结构NiO，其大小在50nm左右。采用循环伏安法（ CV）研究纳米片状NiO修饰电极在NaOH溶液中的电化学行为。结果表明，该电极对葡萄糖具有良好的电催化氧化性能，它对葡萄糖响应的线性范围为2．58×10－6～7．71×10－3 mol／L，检出限为0．5μmol／L（S／N＝3）。