Abstract：
In this paper, a Ni and diamond-like carbon (DLC)-modified TiO2 nanotube composite electrode was prepared as a glucose sensor using a combination of an anodizing process, electrodeposition, and magnetron sputtering. The composition and morphology of the electrodes were analyzed by a scanning electron microscope and energy dispersive X-ray detector, and the electrochemical glucose oxidation performance of the electrodes was evaluated by cyclic voltammetry and chronoamperometry. The results show that the Ni-coated DLC-modified TiO2 electrode has better electrocatalytic oxidation performance for glucose than pure TiO2 and electrodeposited Ni on a TiO2 electrode, which can be attributed to the synergistic effect between Ni and carbon. The glucose test results indicate a good linear correlation in a glucose concentration range of 0.99-22.97 mM, with a sensitivity of 1063.78 μA·mM-1·cm-2 and a detection limit of 0.53 μM. The results suggest that the obtained Ni-DLC/TiO2 electrode has great application potential in the field of non-enzymatic glucose sensors.
摘要：
在本文中,Ni和类金刚石碳（DLC）修饰的TiO2纳米管复合电极制备作为葡萄糖传感器，使用阳极氧化工艺的组合，电沉积,和磁控溅射。通过扫描电子显微镜和能量色散X射线探测器分析了电极的组成和形貌，并通过循环伏安法和计时电流法评估了电极的电化学葡萄糖氧化性能。结果表明，Ni涂层DLC修饰的TiO2电极对葡萄糖的电催化氧化性能优于纯TiO2和在TiO2电极上电沉积Ni，这可以归因于Ni和碳之间的协同作用。葡萄糖测试结果表明在0.99-22.97mM的葡萄糖浓度范围内具有良好的线性相关性，灵敏度为1063.78μA·mM-1·cm-2，检出限为0.53μM。结果表明，所得Ni-DLC/TiO2电极在非酶葡萄糖传感器领域具有巨大的应用潜力。
