Keggin 型磷钨酸盐修饰碳糊电极传感多巴胺的研究

doi:10.13208/j.electrochem.180405

电化学（中英文） ›› 2018, Vol. 24 ›› Issue (5): 555-562. doi: 10.13208/j.electrochem.180405

Keggin 型磷钨酸盐修饰碳糊电极传感多巴胺的研究

董鹏飞，李娜，赵海燕，崔敏，张聪，任聚杰^*，藉雪平^*

河北科技大学理学院, 河北石家庄 050018

收稿日期:2018-04-05 修回日期:2018-05-14 出版日期:2018-10-28 发布日期:2018-06-04
通讯作者: 任聚杰，藉雪平 E-mail:jujieren@126.com, xuepingji@126.com
基金资助:
河北省高等学校科学技术研究项目(No. ZC2016069)、河北科技大学博士启动基金(No. 81/1181222)、河北省研究生创新资助项目(No. CXZZSS2018088)、大学生创新创业训练计划项目(No. 2018065)、河北省高等学校科学技术研究项目(No.ZD2018037)、国家自然科学基金（No. 81872669）和河北省高等学校科学技术研究项目（No. 2C2016007，No. 22017107）资助

Synthesis of Keggin Polyoxometalates Modified Carbon Paste Electrode as A Sensor for Dopamine Detection

DONG Peng-fei, LI Na, ZHAO Hai-yan, CUI Min, ZHANG Cong, REN Ju-jie^*, JI Xue-ping^*

College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China

Received:2018-04-05 Revised:2018-05-14 Published:2018-10-28 Online:2018-06-04
Contact: REN Ju-jie,JI Xue-ping E-mail:jujieren@126.com, xuepingji@126.com

摘要/Abstract

摘要：

多金属氧酸盐作为一类阴离子簇合物，由于其结构的多样性和尺寸大小的可调变性，在电化学、催化和药学等领域引起了人们的广泛关注.本文制备了多酸Co(C₁₅N₆H₁₂)₂[PW₁₂O₃₈]·5H₂O（Co[PW₁₂O₃₈]）修饰碳糊电极并通过电化学阻抗谱、循环伏安法以及差分脉冲伏安法对多巴胺的传感性能进行了研究.对其制备条件和检测条件分别进行了优化.在优化条件下，制备的传感器对多巴胺具有良好的选择性和灵敏度的检测能力.多巴胺的线性响应范围为8.0x10^-6mol·L^-1至3x10^-5mol·L^-1，灵敏度为0.039 μA·(μmol·L^-1)^-1，检出限（S/N=3）为5.4 x10^-6mol·L^-1. 制备的多酸修饰碳糊电极用于检测多巴胺表现出良好的稳定性和重现性，并且对抗坏血酸、尿酸等常见的干扰物质，具有良好的抗干扰性. 多酸修饰的碳糊电极制备过程简单方便，成本低,传感性能良好，对应用于电化学传感器检测多巴胺具备潜在的应用前景.

关键词: 多酸, 多巴胺, 电化学传感器, 碳糊电极, 循环伏安法

Abstract: Polyoxometalates, a class of anionic clusters with structure diversity and size variability, make them very attractive in many fields such as electrochemistry, catalysis and medicine. The Co(C₁₅N₆H₁₂)₂[PW₁₂O₃₈]·5H₂O（Co[PW₁₂O₃₈]） modified carbon paste electrode was prepared in this work, and its electrochemical performances as the sensor for dopamine detection were characterized with electrochemical impedance spectroscopy, cyclic voltammetry and differential pulse voltammetry. The preparation conditions and test conditions were optimized respectively. Under the optimized conditions, the POMs modified carbon paste electrode exhibited good selectivity and sensitivity in dopamine detection. The linear response range was from 8.0 × 10^-6 mol·L^-1 to 3 × 10^-5 mol·L^-1, and the sensitivity was 0.039 μA·(μmol·L^-1)^-1 with the detection limit of 5.4 × 10^-6 mol·L^-1 (S/N=3). The POMs modified carbon paste electrode used for the dopamine sensing showed good stability, repeatability and anti-interference under the coexistence of ascorbic acid, uric acid and so on. The preparation process was simple, convenient, and low cost, and the electrode obtained had good sensing performance, thus, the present POMs modified electrode demonstrated a promising application for the detection of dopamine.

Key words: polyoxometalates, dopamine, electrochemical sensors, carbon paste electrode, cyclic voltammetry

中图分类号:

O646

董鹏飞，李娜，赵海燕，崔敏，张聪，任聚杰，藉雪平. Keggin 型磷钨酸盐修饰碳糊电极传感多巴胺的研究[J]. 电化学（中英文）, 2018, 24(5): 555-562.

DONG Peng-fei, LI Na, ZHAO Hai-yan, CUI Min, ZHANG Cong, REN Ju-jie，JI Xue-ping. Synthesis of Keggin Polyoxometalates Modified Carbon Paste Electrode as A Sensor for Dopamine Detection[J]. Journal of Electrochemistry, 2018, 24(5): 555-562.

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Keggin 型磷钨酸盐修饰碳糊电极传感多巴胺的研究

Synthesis of Keggin Polyoxometalates Modified Carbon Paste Electrode as A Sensor for Dopamine Detection

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