Nano-composite of Co3O4 and Cu with enhanced stability and catalytic performance for non-enzymatic electrochemical glucose sensors
Nano-composite of Co3O4 and Cu with enhanced stability and catalytic performance for non-enzymatic electrochemical glucose sensors
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用于非酶电化学葡萄糖传感器的具有增强稳定性和催化性能的 Co3O4 和 Cu 纳米复合材料
DOI：
10.1039/c7ra11540g
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发表时间：
2017-11
期刊：
影响因子：
3.9
通讯作者：
Serge Kokot
中科院分区：
文献类型：
--
作者：
Xiaoyun Lin;Yanfang Wang;Wenhui He;Yongnian Ni;Serge Kokot
采用溶剂热法合成了具有近立方形貌的纳米Co 3 O 4，并采用滴加和恒电位沉积技术成功构建了非酶电化学葡萄糖传感器（Co 3 O 4-CuNPs/Pt）。通过X射线粉末衍射、扫描电子显微镜、透射电子显微镜、X射线能谱和X射线光电子能谱对所得Co 3 O 4和Co 3 O 4-CuNPs进行了表征和研究。使用电流（i-t）法进行葡萄糖的定量分析，电流差对葡萄糖浓度的曲线在0.5-336 μ M范围内呈线性，线性相关系数（R-2）为0.9989，检测限（LOD）为0.43 μ M。当线性范围降至0.5-76.5 μ M时，R-2和LOD分别为0.9997和0.17 μ M。对上述两个线性范围，传感器的灵敏度分别为3.58 × 10（4）和4.03 × 10（4）μ A μ M-1 cm（-2）。该传感器具有良好的重现性和稳定性，可用于人血清中微量葡萄糖的检测。
Nanostructured Co3O4 with near-cubic morphology was synthesised using the solvothermal method, and a non-enzymatic electrochemical glucose sensor (Co3O4-CuNPs/Pt) was successfully constructed by dropping and potentiostatic depositing technologies. The obtained Co3O4 and Co3O4-CuNPs were characterised and investigated by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. Quantitative analysis of glucose was performed using the amperometric (i-t) method, and a plot of current difference versus concentration of glucose was linear in the range 0.5-336 mu M, with a linear correlation coefficient (R-2) of 0.9989 and limit of detection (LOD) of 0.43 mu M. When the linear range was reduced to 0.5-76.5 mu M, R-2 and LOD were 0.9997 and 0.17 mu M, respectively. The sensitivity of the sensor was evaluated as 3.58 x 10(4) and 4.03 x 10(4) mu A mu M-1 cm(-2) for the above two linear ranges, respectively. This novel sensor produced satisfactory reproducibility and stability and was applied to monitor trace amounts of glucose in human serum samples.
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影响因子：
5.2
作者：
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影响因子：
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作者：
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DOI：
10.1016/j.yvas.2011.03.001
发表时间：
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期刊：
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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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影响因子：
4.9
作者：
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