金属基底上聚合吡咯的电化学及电镜表征

用循环伏安法研究了吡咯在不同金属基底不同支持电解质中的聚合过程，对不同基底上制备的聚吡咯膜进行了电化学、扫描电镜、表面能谱等方面的研究，考察了聚吡咯膜电极对ＮＯ_３－离子的电位响应情况，结果表明，不同基底不同支持电解质在不同的吡咯浓度中表现出各异的伏安行为，经电化学处理的聚吡咯膜电极均对ＮＯ_３－呈Ｎｅｒｎｓｔ响应，扫描电镜观察表明除Ｐｔ基底外在其它基底上制备的聚吡咯膜均呈颗粒性球状堆集。

Characterization of electrochemistry and scanning electron microscope of pyrrole polymerization on metal substrates

The process of polymerization on metallic electrodes was studied by cyclic voltammograms in different electrolyte solution. The polypyrrole film prepared in different substrates was also studied by electrochemistry,scanning electron microscope and energy spectrum and the potential response mechanism of doping NO_3- polypyrrole film was observed.The results show that the PPY-coated electrodes prepared in different condition appeared distinct CV actions;the potential response of PPY-coated electrodes to NO_3- ion showed Nernstian behavior;the PPY-coated electrodes assumed granular,spherical accumulation by scanning electron microscope besides Pt electrode.