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