Nonenzymatic glucose sensor based on Cu–Cu2S nanocomposite electrode

Nonenzymatic glucose sensor based on Cu–Cu2S nanocomposite electrode
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基于Cu-Cu2S纳米复合电极的非酶葡萄糖传感器

DOI:
10.1016/j.elecom.2012.08.014
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发表时间:
2012-10
影响因子:
5.4
通讯作者:
Guangfeng Wang
Guangfeng Wang
中科院分区:
工程技术3区
文献类型:
--
作者:
Xiaojun Zhang;Lingling Wang;Rong Ji;Liutao Yu;Guangfeng Wang

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通过简单的刻蚀方法在Cu衬底上制备了Cu 2S纳米片(简称Cu 2S NPs)。通过扫描电镜和X射线衍射对纳米Cu 2S颗粒的形貌和结构进行了表征。然后将Cu-Cu_2S复合材料直接用作非酶检测葡萄糖的电极。电化学研究表明,由于Cu 2S纳米片的大比表面积和Cu棒的高电导率,Cu-Cu 2S电极对葡萄糖具有良好的催化效果。在−0.10V的外加电位下,传感器产生361.58μAmM− 1的超高灵敏度,检测限为0.1μM(S/N=3)。该传感器具有良好的选择性、稳定性和重复性。
Cu2S nanoplates (named Cu2S NPs) were synthesized on the Cu substrate by a simple etching method. The morphology and structure of Cu2S NPs were characterized by scanning electron microscopy and X-ray diffraction. Then the Cu–Cu2S composites were directly used as electrode to nonenzymatic detect glucose. The electrochemical study has demonstrated that the Cu–Cu2S electrode shows a perfect catalytic effect on the glucose due to the large surface area of Cu2S nanoplates and high electric conductivity of Cu rod. At an applied potential of −0.10V, the sensor produces an ultra high sensitivity of 361.58μAmM−1with a low detection limit of 0.1μM (S/N=3). What's more, the proposed sensor displays excellent selectivity, good stability, and satisfying repeatability.
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发表时间: 2011-05-01
期刊: NATURE MATERIALS
影响因子: 41.2
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