氢氧化铜纳米线用于无酶葡萄糖传感器的研究

Application of Copper Hydroxide Nanowires in Enzyme-free Glucose Sensor

目的利用化学沉淀法制备Cu(OH)_(2) NWs,将其应用于无酶葡萄糖传感器,检测对葡萄糖的电化学行为。方法利用化学沉淀法制备Cu(OH)_(2) NWs,取适量涂抹于泡沫铜(CF)表面,与铂片电极、银/氯化银电极组装三电极系统,利用循环伏安法(CV)和电流时间曲线(I-T)测试方法检测其线性范围、检测限等传感性能。结果该传感器具有良好的线性范围(0.005~2.7mmol/L),检测限为2.6μmol/L(S/N=3),灵敏度为2.16mA/(mM·cm^(2)),具有良好的重现性(2.5%)与精密度(4.3%)。结论该传感器对葡萄糖有良好的催化效应,且具有良好的线性范围、检测限、重现性与精密度,为无酶葡萄糖传感器的制备提供了一种思路。

Objective To prepare Cu(OH)_(2) NWs by chemical precipitation method and apply it to prepare enzyme free glucose sensor to detect the electrochemical behavior of glucose.Methods Cu(OH)_(2) NWs was prepared by chemical precipitation method,and appropriate amount was applied to the surface of copper foam(CF).A three-electrode system was assembled with platinum electrode and silver/silver chloride electrode.The linear range and detection limit of Cu(OH)_(2) NWs were tested by cyclic voltammetry(CV)and current time curve(I-T).Results The sensor had a good linear range(0.005~2.7mmol/L),detection limit of 2.6μmol/L(S/N=3),sensitivity of 2.16mA/(mM·cm^(2)),reproducibility(2.5%)and precision(4.3%).Conclusion The sensor has a good catalytic effect on glucose,and has a good linear range,detection limit,reproducibility and precision,which provides a new idea for the preparation of enzyme-free glucose sensor.