材料科学
抗坏血酸
纳米复合材料
石墨烯
循环伏安法
化学工程
安培法
氧化物
电催化剂
电化学气体传感器
化学
纳米技术
无机化学
核化学
电化学
电极
有机化学
物理化学
工程类
食品科学
作者
Guangchao Zang,Wanting Hao,Xiaoyu Li,Shihao Huang,Gan Jia,Zhi Luo,Yuchan Zhang
标识
DOI:10.1016/j.electacta.2018.05.016
摘要
This works presents a novel hybrid nanocomposite material for glucose, detection for the first time via electrocatalytic glucose oxidation in neutral pH environment. The nanocomposite consisted of copper nanowires (Cu NWs), metal-organic frameworks (MOFs) and graphene oxide (GO) was prepared by an easy and convenient functionalization way through direct ultrasound mixing. We evaluated the microstructures of as-prepared materials and verified their electrocatalytic activity, resulted from unique synergistic effect towards glucose oxidation in neutral PBS. Morphology and size of the nanostructures were characterized by SEM and TEM. Good electrochemical performance was observed with cyclic voltammetry and amperometric i-t curve. The sensor showed a wide linear range (20 μM–26.6 mM) and a low detection limit of 7 μM (S/N = 3) at applied potential of +0.3 V (vs. Ag/AgCl). The selectivity was investigated against lactose, fructose, sucrose, maltose, xylose, and satisfactory anti-interference performance to acetaminophen, ascorbic acid, and uric acid was, tested in concentrations even higher than the normal physiologic levels. The application of the functional material to the analysis of glucose in human serum samples and commercial beverages showed good recoveries, which suggests it a promising choice for non-enzymatic glucose measurement in physiological applications.
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