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首页> 外文期刊>Biotechnology and bioprocess engineering >Fabrication of Non-enzymatic Electrochemical Glucose Sensor Based on Nano-copper Oxide Micro Hollow-spheres
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Fabrication of Non-enzymatic Electrochemical Glucose Sensor Based on Nano-copper Oxide Micro Hollow-spheres

机译：基于纳米氧化氧化物微空心球的非酶促电化学葡萄糖传感器的制备

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摘要

In the present study, an electrochemical glucose biosensor has been developed based on nano-copper oxide micro hollow spheres. The nano-copper oxide micro hollow spheres were synthesized via hydrothermal method using pluronic F-127 as a surfactant. For structural characterization of CuO hollow sphere structures, the scanning electron microscopy and X-ray diffraction spectroscopy were applied. The performance parameters of the sensor were improved by optimizing the modification process. The electrochemical characteristics of the proposed glucose biosensor were investigated by using cyclic voltammetry and chronoamperometry techniques in both 0.1 M and 1 M NaOH solutions. The results revealed that the proposed electrode has a wide dynamic range from 1 μM to 11.50 mM for glucose detection at 0.1 M NaOH solution which covers two linear ranges from 1 uM to 3 mM and from 3 mM to 11.50 mM. The sensitivities of the two linear ranges were obtained as 25.0 ± 0.8 μA-mM~(-1)-cm~(-2) and 13.6 ± 0.3 μAmM~(-1)-cm~(-2), respectively. An extremely wide linear range from 1 uM to 16 mM with a sensitivity of 35.2 ± 0.4 μA-mM~(-1) cm~(-2) was achieved for the 1 M NaOH solution. The sensor achieved a 1 μM practical lowest limit of detection which is an excellent low limit of detection at both NaOH concentrations compared to some important previously reported works. In addition, the good tolerance toward the interfering species and the satisfactory behavior in real sample analysis verified the promising performance of the proposed sensor.
机译：在本研究中，已经基于纳米铜氧化物微空心球开发了电化学葡萄糖生物传感器。通过使用Pluronic F-127作为表面活性剂通过水热法合成纳米铜氧化物微空心球。对于CuO中空球体结构的结构表征，施加扫描电子显微镜和X射线衍射光谱。通过优化修改过程，改善了传感器的性能参数。通过在0.1M和1M NaOH溶液中使用循环伏安法和计时术技术来研究所提出的葡萄糖生物传感器的电化学特性。结果表明，在0.1M NaOH溶液中，所提出的电极的宽动度范围为1μm至11.50mm的葡萄糖检测，其覆盖从1μm至3mm和3mm至11.50mm的两个线性范围。获得两个线性范围的敏感性分别获得25.0±0.8μA-mm〜（-1）-cm〜（-2）和13.6±0.3μamm〜（-1）-cm〜（-2）。对于1M NaOH溶液，实现了1μm至16mm的极宽的线性范围，灵敏度为35.2±0.4μA-mm〜（-1）cm〜（-2）。传感器实现了1μm的实际最低检测限，这对于一些重要的先前报道的作品相比，NaOH浓度的优异检测限优。此外，对干扰物种的良好耐受性以及真实样本分析中的令人满意的行为验证了所提出的传感器的有希望的性能。

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