中文摘要：

该文通过层层组装技术实现了聚苯胺纳米线（PANI）与聚丙烯酸（PAA）可控固载，组装过程通过紫外可见光谱（UV-vis），扫描电镜（SEM）以及电化学方法进行了表征。实验表明，纳米结构的PANI和PAA的多层复合膜性质稳定，PAA能够掺杂在纳米结构的PANI中并能有效的使其在中性pH条件下保持电化学活性，并且对过氧化氢（H2O2）有着非常好的电催化活性。

英文摘要：

In this paper, layer-by-layer assembly technique was used to immoblize Polyaniline （PANI） nanofibers and poly （acrylic acid） （PAA）. The assembly process was characterized by UV-Vis, SEM and electrochemistry. The obtained nanostructured PANI/PAA multilayer films are very stable. PAA inside the multilayer film can dope nanostructured PANI effectively and shift its electroactivity to a neutral pH environment. Moreover, the multilayer film shows high electrocatalytic ability toward H2O2, which makes it an ideal substrate for H2O2 detection and offers great promise for biosensing.