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采用电沉积技术在过氧化聚吡咯膜上制备纳米金,通过扫描电镜和X-射线光电子能谱对复合材料的形貌和结构进行表征。采用循环伏安和计时安培法研究烟酰胺腺嘌呤二核苷酸(Nicotinamide Adenine Dinucleotide,NADH)在纳米金/过氧化聚吡咯复合材料修饰玻碳电极上的电化学催化氧化反应。结果表明,复合材料修饰电极显著降低了NADH的氧化峰电位,峰电流与其浓度在2.0×10~(-7)～1.2×10~(-3)mol/L范围内呈现很好的线性关系,检测限为5.0×10~(-8)mol/L,该修饰电极可用于对NADH的线性检测。
Electrodeposition technology was used to prepare gold nanoparticles on PPy films. The morphology and structure of the composites were characterized by scanning electron microscopy and X-ray photoelectron spectroscopy. Cyclic voltammetry and chronoamperometry were used to study the electrochemical catalytic oxidation of nicotinamide Adenine Dinucleotide (NADH) on the gold electrode / polypyrrole composite modified glassy carbon electrode. The results showed that the composite oxide modified electrode significantly reduced the oxidation peak potential of NADH, and the peak current showed a good linear relationship with the concentration of 2.0 × 10 -7 -1.2 × 10 -3 mol / L. The detection limit is 5.0 × 10 -8 mol / L. The modified electrode can be used for the linear detection of NADH.