Dopamine sensor based on a hybrid material composed of cuprous oxide hollow microspheres and carbon black
Dopamine sensor based on a hybrid material composed of cuprous oxide hollow microspheres and carbon black
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基于氧化亚铜空心微球和炭黑混合材料的多巴胺传感器
DOI：
10.1007/s00604-015-1455-2
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发表时间：
2015-02
影响因子：
5.7
通讯作者：
Fan, You-Jun
中科院分区：
文献类型：
--
作者：
Sun, Sheng-Nan;Qu, Zhi-Yu;Zhang, Jun-Ming;Fan, You-Jun
本文报道了一种新型的电化学多巴胺（DA）传感器，该传感器是基于铜(I)氧化物空心微球和炭黑组成的杂化材料修饰的玻碳电极（GCE）。在由水和深共熔溶剂氯化胆碱/尿素组成的混合溶剂中，通过抗坏血酸原位还原Cu（II）合成了该杂化材料。采用扫描电镜、透射电镜和x射线衍射对材料的表面形貌和结构进行了表征。采用循环伏安法和计时安培法评价了改性GCE在pH为5.7的磷酸盐缓冲溶液中对DA氧化的电催化性能。与其他改性电极相比，该传感器对DA氧化表现出更高的电催化活性。在0.25 V （vs. SCE）的工作电位下，传感器具有快速响应（<3 s）和宽线性范围（9.9 × 10−8 ~ 7.08 × 10−4mol L−1）。检出限低至3.96 × 10−8mol L−1（S/N = 3）。该传感器除具有高灵敏度外，还具有良好的再现性、长期稳定性和公平的选择性。设计了一种基于Cu(I)氧化物空心微球和炭黑（Cu2O HMS/CB）复合材料的新型电化学多巴胺传感器。CB涂层明显减小了Cu2O HMS的尺寸。该传感器具有良好的多巴胺检测分析性能。
We report on a novel electrochemical dopamine (DA) sensor based on a glassy carbon electrode (GCE) modified with a hybrid material composed of Cu(I) oxide hollow microspheres and carbon black. The hybrid material was synthesized in a mixed solvent composed of water and the deep eutectic solvent choline chloride/urea, and by in-situ reduction of Cu(II) by ascorbic acid. The surface morphology and structure of the materials were characterized by scanning electron microscopy, transmission electron microscopy and X-ray diffraction. Cyclic voltammetry and chronoamperometry were used to evaluate the electrocatalytic properties of the modified GCE toward DA oxidation in phosphate buffer solution of pH 5.7. The sensor displays a higher electrocatalytic activity toward DA oxidation compared to other modified electrodes. At a working potential of 0.25 V (vs. SCE), the sensor exhibits a rapid response (<3 s) and a wide linear range from 9.9 × 10−8to 7.08 × 10−4mol L−1. The detection limit is as low as 3.96 × 10−8mol L−1(S/N = 3). In addition to its high sensitivity, the sensor displays good reproducibility, long-term stability and fair selectivity.Graphical AbstractA novel electrochemical dopamine sensor based on Cu(I) oxide hollow microspheres and carbon black (Cu2O HMS/CB) composite has been developed. The coating of CB obviously reduces the size of Cu2O HMS. The sensor exhibits good analytical performance for dopamine detection.
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影响因子：
7.4
作者：
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通讯作者：
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作者：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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