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文章编号： 16726987（2019）03001208； DOI： 10.16351/j.16726987.2019.03.002
井翠洁， 张玉冰*
（青岛科技大学 肿瘤标志物传感分析教育部重点实验室；化学与分子工程学院，山东 青岛 266042）
摘要： 聚硫堇/金属有机骨架复合材料 PTh/Cu(tpa)被制备并用于灵敏的检测对硝基苯酚（4NP）。通过红外光谱(FTIR)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)等仪器对Cu(tpa)及PTh/Cu(tpa)进行了表征。相对于裸电极及单一材料修饰电极，PTh/Cu(tpa)复合材料修饰电极对4NP的检测具有更好的电化学响应，这可能归因于Cu(tpa)自身具有较大的比表面积，而聚硫堇的存在增加了Cu(tpa)的导电性，使得PTh/Cu(tpa)复合材料兼具有大的比表面积和良好导电性的性能，从而对目标物表现出协同的催化作用。在最优条件下，通过差分脉冲伏安法(DPV)对4NP进行了检测，还原峰电流与4NP的浓度在3×10-7~1×10-5 mol·L-1范围内呈良好的线性关系，检出限为71×10-8 mol·L-1。
关键词： 对硝基苯酚； 金属有机骨架； 聚硫堇； 复合材料； 电化学传感
中图分类号： TP 212.3文献标志码： A
引用格式： 井翠洁， 张玉冰. 基于新型聚硫堇/金属有机骨架复合材料的电化学传感器用于检测对硝基苯酚\[J\]. 青岛科技大学学报（自然科学版）， 2019， 40（3）： 1219.
JING Cuijie， ZHANG Yubing. A novel electrochemical sensor based on polythionine/Cu(tpa) MOF composite for the detection of 4nitrophenol\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2019, 40(3)： 1219.
Novel Electrochemical Sensor Based on Polythionine/Cu(tpa) MOF Composite for the Detection of 4Nitrophenol
JING Cuijie， ZHANG Yubing
（Key Laboratory of Sensor Analysis of Tumor Marker of Education Ministry; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology，Qingdao 266042, China）
Abstract: Polythionine/Cu(tpa) composite was fabricated for the sensitive electrochemical determination of 4nitrophenol. The synthesized Cu(tpa) and PTh/Cu(tpa) composite were characterized by FTIR、SEM and TEM analysis. Compared with bare electrode and single material modified electrode, PTh/Cu(tpa) composite has the good electrochemical response for 4NP detection, this may be attributed to the large specific surface area of Cu(tpa), the existence of Polythionine increases the conductivity of Cu(tpa). Therefore, the PTh/Cu(tpa) composite possesses the property of large specific surface area and good electronic conductivity, thus exhibiting synergistic catalysis effect on the target. Under optimized preparation conditions, 4NP was detected by differential pulse voltammetry (DPV), the reduction peak current vs the concentration of 4NP exhibits a linear relation with the concentration range from 3×10-7—1×10-5 mol·L-1, and the limit of detection was determined to be 71×10-8 mol·L-1.
Key words: 4nitrophenol; metalorganic frameworks;polythionine; composite; electrochemical sensor
收稿日期： 20180508
基金项目： 青岛市技术合作项目（青技审字（2016）第75788号）.
作者简介： 井翠洁（1994—），女，硕士研究生.*通信联系人.
