基于离子液体负载氮化硼复合材料的电化学传感平台检测芦丁

Detection of Rutin by Electrochemical Sensing Platform Based on Ionic Liquid Supported Boron Nitride Composites

本文制备了一种氮化硼(BN)负载铁型丁基氯化吡啶离子液体(x[Fe-Bpy]@BN,x=质量比)用于构建电化学传感平台检测芦丁。采用扫描电镜表征了复合材料的形貌,采用循环伏安法、差分脉冲伏安法表征了修饰电极的电化学行为。进一步考察了pH值、富集时间、富集电位和扫速对电化学传感平台的影响。在最佳实验条件下将该传感平台应用于对芦丁的检测,氧化峰电流与芦丁分别在0.05~80.0μmol/L和80.0~350.0μmol/L范围内呈线性关系,检测限为0.017μmol/L。抗干扰试验、循环稳定性试验表明,该传感平台应用于芦丁的测定具有良好的选择性和稳定性。

In this paper,a boron nitride(BN)-supported iron butyl pyridine chloride ionic liquid(x[Fe-Bpy]@BN,x=mass ratio)was prepared to construct an electrochemical sensing platform for the detection of rutin.The morphology of the composite was characterized by SEM,and the electrochemical behavior of the modified electrode was characterized by cyclic voltammetry and differential pulse voltammetry.The effects of pH,enrichment time,enrichment potential and scanning speed on the electrochemical sensing platform were further investigated.The sensing platform was applied to the detection of rutin under the best experimental conditions.The oxidation peak current has a linear relationship with the rutin in the range of 0.05~80.0 mol/L and 80.0~350.0 mol/L,and the detection limit is 0.017 mol/L.The anti-interference test and cycle stability test showed that the sensing platform has good selectivity and stability when applied to the determination of rutin.