氧化锌/聚吡咯复合材料制备及其电化学传感性能

Preparation of Zinc Oxide/Polypyrrole Composite Materials amd Its Electrochemical Sensing Properties

利用水热法制得氧化锌纳米阵列作为形貌导向的模板,在ITO导电玻璃上制备氧化锌纳米棒,再利用电化学法成功合成氧化锌/聚吡咯膜,该复合材料制得的电极比未使用氧化锌阵列制备的电极要灵敏。对合成的氧化锌/聚吡咯膜进行表征、电化学性能测试。得到如下结论:氧化锌/聚吡咯复合材料形貌成网状致密结构;合成电位对制备氧化锌/聚吡咯的影响较大,当用恒电位法聚合吡咯时,其适宜的电位是0.8~1.0 V左右;当循环伏安法测电化学传感性能时,最佳扫描速度为0.5 V/s;氧化锌/聚吡咯复合材料对过氧化氢具有较高的催化还原功能,因此氧化锌/聚吡咯复合材料可做传感器具有更高的灵敏度。

Zno nanorods were prepared on ITO glass by hydrothermal method.Zno/polypyrrole films were successfully synthesized by electrochemical method.The electrodes prepared by the composite materials were more sensitive than those prepared without zno arrays.The synthetic zinc oxide/polypyrrole films were characterized and their electrochemical properties were tested.The results are as follows:the zno/polypyrrole composite has a network dense structure;The synthesis potential has a great influence on the preparation of zinc oxide/polypyrrole.When the polypyrrole is polymerized by potentiostatic method,the appropriate potential is about 0.8~1.0 V.When cyclic voltammetry is used to measure the electrochemical sensing performance,the best scanning speed is 0.5 V/s.Zinc oxide/polypyrrole composite has higher catalytic reduction function to hydrogen peroxide,so zinc oxide/polypyrrole composite can be used as a sensor with higher sensitivity.