Cu@ZIF-67纳米材料的制备及其电化学传感应用

Synthesis of Cu@ZIF-67 nanomaterials and it’s applications in electrochemical sensors

本研究采用化学法合成了Cu@ZIF-67纳米复合材料,使用能谱仪和扫描电镜对其化学组成和表面形貌进行了表征。将该纳米复合材料修饰在玻碳电极表面,构建了一种电化学传感器。通过循环伏安法和差分脉冲伏安法测定了该电化学传感器的性能,结果表明,该传感器对多巴胺(DA)具有良好的催化活性,检测DA的线性范围在0.1~800μmol·L^(-1),检出限为0.03μmol·L^(-1)(S/N=3)。本研究构建的电化学传感器具有线性范围宽,检测限低,稳定性高等优点,为人体内多巴胺含量的检测提供了一种有效的方法。

In this research,Cu@ZIF-67 nanocomposites were synthesized by chemical method,and the chemical composition and surface morphology of the nanocomposites were characterized by energy dispersive X-ray spectroscope and scanning electron microscopy.An electrochemical sensor was construct by modified the nanocomposites on the surface of glassy carbon electrode.The electrochemical performance of the sensor was investigated using cyclic voltammetry and differential pulse voltammetry.The results showed that the electrochemical sensor had good catalytic activity for dopamine with a linear range of 0.1~800μmol·L^(-1)and a detection limit of 0.03μmol·L^(-1)(S/N=3).The electrochemical sensor constructed in this experiment has the advantages of wide linear range,low detection limit and high stability for the detection of dopamine.It provides an effective method for the detection of dopamine in human body.