Synthesis of nanoneedle-like copper oxide on N-doped reduced graphene oxide: A three-dimensional hybrid for nonenzymatic glucose sensor
Synthesis of nanoneedle-like copper oxide on N-doped reduced graphene oxide: A three-dimensional hybrid for nonenzymatic glucose sensor
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DOI：
10.1016/j.snb.2016.07.105
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发表时间：
2017-02-01
影响因子：
8.4
通讯作者：
Qu, Lingbo
中科院分区：
文献类型：
--
作者：
Yang, Suling;Li, Gang;Qu, Lingbo
通过简单的方法在氮掺杂还原氧化石墨烯上合成了纳米针状氧化铜。通过透射电子显微镜、扫描电子显微镜、X射线光电子能谱和电化学方法对纳米复合材料进行了表征。 N掺杂的还原氧化石墨烯锚定有大量纳米针状氧化铜，其宽度约为20纳米，长度为0.5微米。基于这种纳米复合材料制造了非酶葡萄糖传感器。三维混合结构可以大大增加电极和电解质之间的接触面积，这可以为葡萄糖提供更多的容纳位点，缩短葡萄糖的扩散长度并增强电极上的反应活性。在最佳条件下，设计的传感器对葡萄糖表现出快速响应，在0.5-639μM的浓度范围内具有良好的线性，最低检测浓度为0.01μM。该传感器成功用于检测人血清样品中的葡萄糖。 (C) 2016 Elsevier B.V. 保留所有权利。
Nanoneedle-like copper oxide on N-doped reduced graphene oxide was synthesized through a simple method. The nanocomposite was characterized by transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy and electrochemical method. N-doped reduced graphene oxide is anchored with a large number of nanoneedle-like copper oxides, which are about 20 nm in width and 0.5 mu m in length. A nonenzymatic glucose sensor was fabricated based on this nanocomposite. The three-dimensional hybrid structure can greatly increase the contacting area between the electrode and electrolyte, which may provide more sites for glucose accommodation shorten the diffusion length of glucose and enhance the reactivity on the electrode. Under the optimal conditions, the designed sensor showed a fast response to glucose with a good linear concentration range of 0.5-639 mu M and a lowest detectable concentration of 0.01 mu M. The sensor was successfully used to detect glucose in human serum samples. (C) 2016 Elsevier B.V. All rights reserved.