电化学沉积制备纳米结构铜电极及其葡萄糖检测性能

Electrodeposition of Nanostructured Cu Electrode and Its Glucose Assay Performance

利用电化学沉积法制备了高电活性的纳米结构铜电极材料,采用扫描电子显微镜和电化学方法分别对电极表面形貌和电化学性能进行了表征,研究了实验参数对葡萄糖电氧化活性的影响.结果表明,改变沉积条件可以调控沉积铜的形貌及电催化活性.在最佳条件下制备的铜纳米结构电极对葡萄糖检测的灵敏度为1310μA·L/mmol,检出限为5.0×10-7mol/L(S/N=3).

Nanostructured copper electrode was fabricated by electrodeposition of Cu on polyelectrolyte porous film at high overpotentials in acid condition. The effects of electrodeposition parameters on the morphology of electrodeposited Cu and the glucose electrooxidation activity were investigated by scanning electron microscope and electrochemical techniques. The results revealed that well-distinct nanostructured copper electrodes were achieved by electrodeposition of Cu on polyelectrolyte porous film at high overpotentials in acid condition. Cu/PSS/PDDA/ITO electrode which is obtained under optimal conditions exhibited high sensitivity （ 1310μA·L/mmol）, fast response（2-3 s）, wide linear range（1.0í10-6-5.0×10^-3 mol/L） and low detection limit（5.0×10^-7 mol/L） in glucose determination at a lower overpotential of 0.40 V, with excellent resistance towards electrode fouling.