Changchun Institute of Applied Chemistry, Graduate School of Chinese Academy of Science, 5625 Renmin Street, Changchun 130022, PR China.
Biosens Bioelectron. 2010 Oct 15;26(2):903-7. doi: 10.1016/j.bios.2010.07.007. Epub 2010 Aug 2.
An enzymeless biosensor based on CuxO/Cu electrode was investigated in this study. The XRD analysis confirmed that CuxO nanostructured material was composed of Cu2O and CuO. The FESEM images showed that the catalysts were flower-like with large surface area. From cyclic voltammograms, the peak current of CuxO/Cu electrode was 6, 6.3 and 1.7 times higher than that of the Cu foil, Cu2O/GCE and CuO/GCE electrodes, respectively. The biosensor based on CuxO/Cu exhibited excellent performance for glucose detection, giving a linear dependence between current and glucose concentration (R=0.996), with a low detection limit (0.049 mM) and high sensitivity (1.62 mA cm(-2) mM(-1)). Finally, the CuxO/Cu sensor was applied and checked in the glucose determination in blood serum samples.
本研究中考察了一种基于无酶生物传感器的 CuxO/Cu 电极。XRD 分析证实 CuxO 纳米结构材料由 Cu2O 和 CuO 组成。FESEM 图像显示，催化剂为具有大表面积的花状。从循环伏安曲线可以看出，CuxO/Cu 电极的峰电流分别比 Cu 箔、Cu2O/GCE 和 CuO/GCE 电极高 6、6.3 和 1.7 倍。基于 CuxO/Cu 的生物传感器在葡萄糖检测方面表现出优异的性能，电流与葡萄糖浓度之间呈线性关系（R=0.996），检测限低（0.049mM），灵敏度高（1.62mAcm-2mM-1）。最后，将 CuxO/Cu 传感器应用于血清样品中葡萄糖的测定并进行了检查。
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