芦丁在二茂铁酰胺/纳米金修饰电极上的电催化行为研究

Electrocatalysis of Rutin at Aminylferrocene/Nanogold Modified Electrode

通过纳米金(NG)和二茂铁酰胺(FcAI)之间的Au-N键合作用,制备了二茂铁酰胺/纳米金修饰玻碳电极(FcAI/NG/GCE),并采用电化学方法对修饰电极进行了表征.同时研究了芦丁在修饰电极上的电化学行为,实验表明,该电极对芦丁的电化学氧化具有明显的催化作用.用示差脉冲伏安法(DPV)对芦丁进行了测定,其氧化峰电流与芦丁的浓度在5.0×10-7-1.0×10-4molL-1范围内呈良好的线性关系,线性相关系数为0.9989,检出限(S/N=3)为1.0×10-7molL-1.

Aminylferrocene （ FcAI）-nanogold （NG） modified glassy carbon electrode （FcAI/NG/GCE） was prepared by the Au- N bond between Au and FcAI. Electrochemical technique was employed to characterize the surface of the modified electrode. The electrochemical behavior of turin on the modified electrode was investigated and it was found that the modified electrode has an obvious electrocatalytic effect on rutin. We investigated the determination of rutin on the modified electrode by differential pulse voltammetry （DPV）. Linear calibration curve was obtained in the range of 5.0 ×10^-7molL^-1 to 1.0×10^-4molL^-1 in 0.1molL^-1 phosphate buffer solution （pH= 5.0） with a correlation coefficient of 0. 9989. The detection limit （S/N = 3） of turin is estimated to be 1.0×10^-7mol/L.