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利用水相法合成了ZnS:Ni和ZnS:Ni/ZnS量子点(QDs,quantum dots),并通过原子力显微镜(AFM)、X射线衍射(XRD)和红外光谱(IR)对ZnS:Ni和ZnS:Ni/ZnS QDs进行表征.本文以玻碳为基底,研制了ZnS:Ni/ZnS量子点修饰电极,并探讨了邻苯二酚在该传感器上的电化学行为.实验结果表明,该传感器对邻苯二酚的氧化过程具有显著的电催化作用.在最佳条件下,邻苯二酚在1.0×10~(-6)~1.0×10~(-3) mol·L~(-1)浓度范围内与其氧化峰电流呈现良好的线性关系(r=0.999 9),检出限为4.2×10~(-7) mol·L~(-1).该电化学传感器具有良好的重现性、稳定性和一定的抗干扰能力,具有一定的应用前景.
The ZnS: Ni and ZnS: Ni / ZnS QDs were synthesized by aqueous method. The effects of ZnS: Ni and ZnS on the surface morphology were characterized by atomic force microscopy (AFM), X-ray diffraction (XRD) and infrared spectroscopy (IR) : Ni / ZnS QDs. In this paper, a ZnS: Ni / ZnS QDs electrode was developed based on glassy carbon and the electrochemical behavior of catechol on the sensor was discussed.The experimental results show that the sensor pair The oxidation of catechol has significant electrocatalytic activity. Under the optimal conditions, the pyrolysis of catechol at 1.0 × 10 -6 -6.0 × 10 -3 mol·L -1, (R = 0.999 9) with a detection limit of 4.2 × 10 -7 mol·L -1 .The electrochemical sensor has good reproducibility , Stability and a certain degree of anti-interference ability, has a certain application prospects.