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聚色氨酸功能化石墨烯电化学催化多巴胺

弓巧娟,  韩海霞,  王永东,  姚陈忠,  杨海英,  乔锦丽

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文章导航 > 新型炭材料  > 2020 >  35(1): 34-41
弓巧娟, 韩海霞, 王永东, 姚陈忠, 杨海英, 乔锦丽. 聚色氨酸功能化石墨烯电化学催化多巴胺. 新型炭材料, 2020, 35(1): 34-41. doi: 10.1016/S1872-5805(20)60473-5
引用本文: 弓巧娟, 韩海霞, 王永东, 姚陈忠, 杨海英, 乔锦丽. 聚色氨酸功能化石墨烯电化学催化多巴胺. 新型炭材料, 2020, 35(1): 34-41. doi: 10.1016/S1872-5805(20)60473-5
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GONG Qiao-juan, HAN Hai-xia, WANG Yong-dong, YAO Chen-zhong, YANG Hai-ying, QIAO Jin-li. An electrochemical sensor for dopamine detection using poly-tryptophan composited graphene on glassy carbon as the electrode. New Carbon Mater., 2020, 35(1): 34-41. doi: 10.1016/S1872-5805(20)60473-5
Citation: GONG Qiao-juan, HAN Hai-xia, WANG Yong-dong, YAO Chen-zhong, YANG Hai-ying, QIAO Jin-li. An electrochemical sensor for dopamine detection using poly-tryptophan composited graphene on glassy carbon as the electrode. New Carbon Mater., 2020, 35(1): 34-41. doi: 10.1016/S1872-5805(20)60473-5
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聚色氨酸功能化石墨烯电化学催化多巴胺

doi: 10.1016/S1872-5805(20)60473-5
  • 1.

    运城学院 应用化学系, 山西 运城 044000;

  • 2.

    山西师范大学 化学与材料科学学院, 山西 临汾 041000;

  • 3.

    东华大学 环境科学与工程学院, 上海 200000

基金项目: 2018山西省重点研发计划（高新领域）（201803D121030）；盐湖教科局研发项目.
详细信息
    通讯作者:

    弓巧娟,博士,教授.E-mail:gqjuan@163.com;杨海英,博士,副教授.E-mail:haiyingyang79@hotmail.com

  • 中图分类号: TQ127.1+1

An electrochemical sensor for dopamine detection using poly-tryptophan composited graphene on glassy carbon as the electrode

  • 1.

    Department of Applied Chemistry, Yuncheng University, Yuncheng 044000, China;

  • 2.

    College of Chemistry and Material Science, Shanxi Normal University, Linfen 041000, China;

  • 3.

    College of Environmental Science and Engineering, Donghua University, Shanghai 200000, China

Funds: Key Research and Development Program of Shanxi Provincial (201803D121030); Research and Development Project of Salt Lake Education Bureau.

    摘要
  • 摘要: 本文构建了一种基于色氨酸和石墨烯复合材料灵敏检测多巴胺的电化学传感器。传感器的构建是通过在石墨烯修饰的玻碳电极表面电化学沉积色氨酸，得到Trp/GN/GCE，研究结果表明构建的Trp/GN/GCE界面对多巴胺氧化反应具有很好的电化学催化作用。以差分脉冲法记录催化电流，峰电流与多巴胺浓度呈线性相关，线性范围为0.2~100 μmol，检出限为0.06 μmol。建立的方法在大量抗坏血酸存在下可以成功检测多巴胺，该方法还用于检测多巴胺注射剂中多巴胺含量。
    Abstract: A sensitive electrochemical sensor for dopamine (DA) determination was developed using electrochemically polymerized L-tryptophan on graphene-coated glassy carbon (GC) as the electrode. The composite electrode showed an excellent electrochemical catalytic activity towards DA oxidation. The peak oxidation current, recorded by differential pulse voltammetry, is logarithmically proportional to the DA concentration from 0.2 to 100 μM. The electrode has a high detection selectivity in the presence of a high concentration of ascorbic acid and a low detection limit of 0.06 μM, which has been used for DA detection in real samples. The success of the sensor in DA detection is ascribed to a combined effect of the high surface area and high conductivity of graphene and π-π stacking interaction between graphene and p-L-Trp.
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出版历程
  • 收稿日期:  2019-12-29
  • 录用日期:  2020-04-02
  • 修回日期:  2020-01-20
  • 刊出日期:  2020-02-29

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