电沉积Ni纳米颗粒在碱性条件下对葡萄糖的直接电催化氧化  

Electrodeposited Ni nanoparticles used for direct electro-catalytic oxidation of glucose in alkaline medium

作　　者：邢亮[1,2] 刘晓颖[1] 曾宪冬[1] 买楠楠[1] 魏万之[1] 

机构地区：[1]湖南大学化学生物传感与计量学国家重点实验室,化学化工学院,湖南长沙410082 [2]湖南师范大学树达学院,湖南长沙410012

出　　处：《化学传感器》2010年第1期30-35,共6页Chemical Sensors

摘　　要：Ni(Ш)对葡萄糖有很好的催化氧化功能,能直接氧化葡萄糖为葡萄糖酸内酯。该文采用电沉积的方法在金电极的表面修饰一薄层Ni纳米颗粒,研究发现这种纳米级的镍颗粒比常规镍材料具有更为明显的电催化活性。在0.1mol/L的NaOH溶液中,以0.6V作为应用电位,测得葡萄糖浓度在10.0μmol/L～2.5mmol/L范围内呈良好的线性关系,检出限为5.0μmol/L;响应时间为3s。传感器制备简单,无需特殊保管,可重复使用。The Ni（Ш）had a good function for catalytic oxidation of glucose,which could oxidate glucose to glu-colactone directly.A thin film of Ni nanoparticles modified electrode has been fabricated by electrodeposition.It was found that the Ni nanoparticles showed obvious electrocatalytic activity than conventional Ni materials.The modified electrode was used to detection glucose at 0.6 V in 0.1mol/L NaOH solution,the response current was good proportional to the concentration of glucose over the range 10.0 μmol/L～2.5 mmol/L,with a detection limit of 5.0 μmol/L and a response time of 3 s.The preparation of the sensor is simple and has a lower cost,as well as can be used repeatedly.

关 键 词：电沉积 Ni纳米颗粒 电催化氧化 葡萄糖 

分 类 号：Q819[生物学—生物工程]