柔性石墨烯平面电极对多巴胺的灵敏检测

引用本文: 董子杰, 张璞, 李社红, 罗红霞. 柔性石墨烯平面电极对多巴胺的灵敏检测[J]. 分析化学, 2018, 46(7): 1039-1046. doi: 10.11895/j.issn.0253-3820.171425 shu

Citation: DONG Zi-Jie, ZHANG Pu, LI She-Hong, LUO Hong-Xia. Flexible Graphene Platform-based Electrochemical Sensor for Sensitive Determination of Dopamine[J]. Chinese Journal of Analytical Chemistry, 2018, 46(7): 1039-1046. doi: 10.11895/j.issn.0253-3820.171425 shu

柔性石墨烯平面电极对多巴胺的灵敏检测

中国人民大学化学系, 北京 100872
基金项目:
本文系国家自然科学基金项目（No.21575160）资助

摘要: 将化学气相沉积（CVD）制备的石墨烯转移到柔性的聚对苯二甲酸乙二醇酯（PET）上，构建了一种石墨烯平面电极（GPE）。通过恒电位法在GPE表面修饰金纳米颗粒（AuNPs），得到金纳米颗粒修饰石墨烯平面电极（AuNPs/GPE）。用扫描电子显微镜（SEM）、能谱仪（EDS）、高分辨透射电子显微镜（HR-TEM）、X射线衍射（XRD）和拉曼光谱对此电极进行了表征。在AuNPs/GPE上，多巴胺（DA）呈现出一对良好的氧化/再还原峰。从而构建了一种新型DA传感器。DA浓度在0.1~150.0 μmol/L和150.0~400.0 μmol/L范围内，传感器响应电流与DA浓度分段呈现良好的线性关系，检出限为3.9 nmol/L（S/N=3）。此传感器具有响应时间短、稳定性良好、抗干扰能力强、制作成本低、制备简单等优点。

关键词:

English

Flexible Graphene Platform-based Electrochemical Sensor for Sensitive Determination of Dopamine

Department of Chemistry, Renmin University of China, Beijing 100872, China
Received Date: 15 November 2017
Revised Date: 15 March 2018
Fund Project:
This work was supported by the National Natural Science Foundation of China (No. 21575160).

Abstract: The chemical vapor deposition grown graphene was transferred onto flexible polyethylene terephthalate surface to fabricate a graphene platform electrode (GPE), and gold nanoparticles (AuNPs) were electrodeposited on GPE to form an AuNPs modified GPE (AuNPs/GPE). The formation of AuNPs was confirmed by scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), high-resolution transmission electron microscope (HR-TEM), X-ray diffraction (XRD) and Raman spectra. On AuNPs/GPE, dopamine (DA) displayed a pair of well-defined redox peaks with highly enhanced peak currents compared with those on GPE. At detection potential of 0.20 V, AuNPs/GPE sensor presented a wide linear range of 0.1 μmol/L to 400.0 μmol/L of DA with a detection limit of 3.9 nmol/L (S/N=3). In addition, the proposed sensor allowed highly selective and sensitive, stable and fast amperometric sensing of DA.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

柔性石墨烯平面电极对多巴胺的灵敏检测

English

Flexible Graphene Platform-based Electrochemical Sensor for Sensitive Determination of Dopamine

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

柔性石墨烯平面电极对多巴胺的灵敏检测

English

Flexible Graphene Platform-based Electrochemical Sensor for Sensitive Determination of Dopamine

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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