基于中空PtCu纳米复合材料的电化学传感界面构建及其对2-羟基蒽醌的测定  

Construction of Electrochemical Sensing Interface Based on Hollow PtCu Nanocomposite and Its Detection for 2-Hydroxyanthraquinone

作　　者：吴志伟[1] 徐力萍 罗露雨 杨少女 WU Zhiwei;XU Liping;LUO Luyu;YANG Shaonü(College of Chemistry and Chemical Engineering,Xingyang Normal University,Xingyang 464000,China)

机构地区：[1]信阳师范学院化学化工学院,河南信阳464000

出　　处：《信阳师范学院学报（自然科学版）》2021年第1期109-114,共6页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(61201091);河南省高等学校重点科研项目(20B150022)。

摘　　要：中空PtCu纳米复合材料因其内部的空心结构和粗糙的多孔表面,具有较大的比表面积和良好的渗透性,可以有效提高2-羟基蒽醌的电子传递速率和氧化峰电流.基于此,构建了一种高灵敏度、高选择性、可快速测定2-羟基蒽醌的电化学传感平台.利用循环伏安法和微分脉冲伏安法探讨了2-羟基蒽醌在中空PtCu纳米复合材料修饰电极上的电化学氧化行为,并对测定介质、修饰材料滴涂量及富集条件进行了优化.在优化条件下,该传感平台检测2-羟基蒽醌的线性范围为0.80 nmol/L~50μmol/L,检出限为0.60 nmol/L(R SN=3).最后,将该方法成功应用于环境样品中2-羟基蒽醌的测定.The hollow PtCu nanocomposite has a large specific surface area and good permeability due to the interior hollow structure and rough porous surface,which can improve the electron transfer rate and oxidation peak current of 2-hydroxyanthraquinone effectively.An electrochemical sensing platform with high selectivity and sensitivity is developed for the fast determination of 2-hydroxyanthraquinone.The electrochemical oxidation behaviors of 2-hydroxyanthraquinone are investigated by cyclic voltammetry and differential pulse voltammetry.The electrolyte,amount of modifier,and accumulation conditions are optimized.Under the optimal conditions,the linear range is 0.80 nmol/L~50μmol/L and the limit of detection is 0.60 nmol/L(R SN=3).The method is successfully applied to detect 2-hydroxyanthraquinone in environmental samples.

关 键 词：中空PtCu纳米复合材料 2-羟基蒽醌 修饰电极 电化学传感 

分 类 号：O657.15[理学—分析化学]