基于Nafion固定磷钼酸和石墨烯共修饰PEDOT膜电极的电化学过氧化氢传感器

doi:10.13208/j.electrochem.151008

电化学（中英文） ›› 2016, Vol. 22 ›› Issue (1): 57-63. doi: 10.13208/j.electrochem.151008

基于Nafion固定磷钼酸和石墨烯共修饰PEDOT膜电极的电化学过氧化氢传感器

周浩贤，张俊明，屈志宇，张潘宇，樊友军*

广西师范大学化学与药学学院广西低碳能源材料重点实验室，广西桂林 541004

收稿日期:2015-10-08 修回日期:2015-11-24 出版日期:2016-02-29 发布日期:2015-12-02
通讯作者: 樊友军 E-mail:youjunfan@mailbox.gxnu.edu.cn
作者简介:樊友军
基金资助:
国家自然科学基金(No. 21463007，No. 21263002)、广西自然科学基金（No. 2013GXNSFAA019024）和广西教育厅科学技术研究项目（No. 2013YB026）资助

Electrochemical H₂O₂Sensor Based on the Co-immobilization of Phosphmolybdic Acid and Graphene on PEDOT Film Electrode with Nafion

ZHOU Hao-xian, ZHANG Jun-ming, QU Zhi-yu, ZHANG Pan-yu, FAN You-jun*

Guangxi Key Laboratory of Low Carbon Energy Materials, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China

Received:2015-10-08 Revised:2015-11-24 Published:2016-02-29 Online:2015-12-02
Contact: FAN You-jun E-mail:youjunfan@mailbox.gxnu.edu.cn
About author:FAN You-jun

摘要/Abstract

摘要：

以玻碳电极（GCE）为基底电化学聚合制得聚3,4-乙烯二氧噻吩（PEDOT）膜修饰电极，再通过Nafion共固定磷钼酸和石墨烯构建了一种新型的无酶电化学H₂O₂传感器. 利用扫描电子显微镜（SEM）表征制得的修饰电极，并通过循环伏安法和计时电流法研究了传感器对H₂O₂的响应性能. 结果表明，在优化条件下，该传感器对H₂O₂还原具有良好的电催化性能，检测H₂O₂的线性范围为2.91×10^-6 ~ 1.83×10^-2 mol•L^-1，检出限和灵敏度分别为9.90×10^-7 mol•L^-1（S/N = 3）和112.5 μA•（mmol•L^-1）^-1. 此外，该传感器还具有良好的重现性和选择性.

关键词: 电化学H₂O₂传感器, 聚3,4-乙烯二氧噻吩, 磷钼酸, 石墨烯

Abstract:

With a glassy carbon electrode (GCE) as the substrate, the poly(3,4-ethylenedioxythiophene) (PEDOT) film electrode was prepared through the electrochemical polymerization method, then a novel non-enzymatic electrochemical H₂O₂ sensor was fabricated by co-immobilizing phosphomolybdic acid and graphene with Nafion on the PEDOT/GCE electrode. The modified electrodes were characterized by scanning electron microscopy (SEM), while the responsive properties of the sensor to H₂O₂ were investigated by cyclic voltammetry and chronoamperometry. The results demonstrated that, under the optimized conditions, the sensor exhibited good electrocatalytic performance for H₂O₂ reduction. The current response of the sensor was linear to the H₂O₂ concentration in the range of 2.91×10^-6 ~ 1.83×10^-2 mol•L^-1 with the detection limit and sensitivity being 9.90×10^-7 mol•L^-1 (S/N = 3) and 112.5 μA•(mmol•L^-1)^-1, respectively. Moreover, the sensor also exhibited excellent reproducibility and selectivity.

Key words: electrochemical H₂O₂sensor, poly(3,4-ethylenedioxythiophene), phosphmolybdic acid, graphene

中图分类号:

O646，TP212.3

周浩贤，张俊明，屈志宇，张潘宇，樊友军*. 基于Nafion固定磷钼酸和石墨烯共修饰PEDOT膜电极的电化学过氧化氢传感器[J]. 电化学（中英文）, 2016, 22(1): 57-63.

ZHOU Hao-xian, ZHANG Jun-ming, QU Zhi-yu, ZHANG Pan-yu, FAN You-jun*. Electrochemical H₂O₂Sensor Based on the Co-immobilization of Phosphmolybdic Acid and Graphene on PEDOT Film Electrode with Nafion[J]. Journal of Electrochemistry, 2016, 22(1): 57-63.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.151008

https://electrochem.xmu.edu.cn/CN/Y2016/V22/I1/57

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基于Nafion固定磷钼酸和石墨烯共修饰PEDOT膜电极的电化学过氧化氢传感器

Electrochemical H₂O₂Sensor Based on the Co-immobilization of Phosphmolybdic Acid and Graphene on PEDOT Film Electrode with Nafion

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Electrochemical H₂O₂Sensor Based on the Co-immobilization of Phosphmolybdic Acid and Graphene on PEDOT Film Electrode with Nafion