PMB/n-ZnS修饰碳糊电极对双酚A的电化学行为研究  

Study of electrochemical behavior of bisphenol A on a PMB/n-ZnS modified carbon paste electrode

作　　者：顾玲[1] 石爱华[1] 张彦茹[1] 武彩艳 

机构地区：[1]教育部轻化工助剂化学与技术重点实验室陕西科技大学,西安710021

出　　处：《分析试验室》2015年第3期322-325,共4页Chinese Journal of Analysis Laboratory

摘　　要：将纳米硫化锌（n-Zn S）作为载体,通过掺杂-电聚合的方式制备出聚亚甲基蓝/纳米硫化锌复合膜修饰电极（PMB/n-Zn S/CPE）。运用循环伏安法（CV）和电子扫描显微镜（SEM）对复合膜进行表征,其元素组成借助于X射线能谱仪（EDS）进行了分析,进而研究了双酚A在该修饰电极上的电化学行为,探讨了最佳实验条件。掺杂了n-Zn S颗粒后的复合膜呈现出三维空间结构,对双酚A的电催化氧化性能显著提高,峰电流是裸电极上的2.5倍,其氧化峰电流与浓度在1.0×10-5~5.0×10-4mol/L范围内呈现出良好的线性关系,检出限为1.0×10-6mol/L。Nano Zn S was used as a carrier,a poly（ methylene blue） / nano-Zn S（ PMB / n-Zn S） composite film modified carbon paste electrode（ PMB / n-Zn S / CPE） was fabricated by doping and electrochemical polymerization. The composite film was characterized by scanning electron microscopy（ SEM） and cyclic voltammetry（ CV）,and its composition was determined with the aid of energy dispersive spectrometry（ EDS）.Furthermore,the electrochemical behavior of bisphenol A on the modified electrode and the optimal experimental conditions were studied. The results indicated that PMB / n-Zn S / CPE presented a three-dimensional space structure,thus its electrocatalytic oxidation ability increased significantly for BPA and the corresponding oxidation peak current was 2. 5 times as high as that on the unmodified carbon paste electrode. Moreover,a good linear relationship was obtained between the oxidation peak current and the concentration of BPA in the range from 1. 0 × 10-5mol / L to 5. 0 × 10-4mol / L with a detection limit of 1. 0 × 10-6mol / L.

关 键 词：亚甲基蓝 纳米硫化锌 碳糊电极 电聚合 双酚A 

分 类 号：O657.1[理学—分析化学]