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在没有外加掺杂剂的条件下,以FeCl3,Fe(NO3)3,Fe2(SO4)3,FePO4等多种铁盐为氧化剂,在水溶液中采用“无模板”的方法制备了具有较高电导率的聚苯胺纳米结构.铁盐是一种强酸弱碱盐,在水溶液中发生水解释放出质子,质子可以作为掺杂剂进入聚苯胺主链,因此,在苯胺的聚合过程中,铁盐同时起到氧化剂和掺杂剂的双重功能,进一步简化了导电聚苯胺纳米结构的合成条件,降低了反应成本.FTIR,UV-Vis,XRD等结构表征证实所得的纳米结构的聚苯胺均为掺杂态.试验发现,铁盐较低的氧化/还原电位使产物具有较小的直径和较高的电导率和结晶性.不同的对阴离子对聚苯胺产物的形貌有一定的影响,但对产物的结构和性能影响不大.铁盐与苯胺单体的比例对聚苯胺的形貌和电导率均有较大的影响.
In the absence of additional dopants, FeCl3, Fe (NO3) 3, Fe2 (SO4) 3, FePO4 and other iron salts as oxidants in aqueous solution using "no template Highly conductive polyaniline nanostructures. Iron salt is a strong acid weak base salt, hydrolysis in aqueous solution to release protons, protons can be used as a dopant into the polyaniline backbone, therefore, in the aniline polymerization process, iron Salt at the same time as a dual function of oxidant and dopant to further simplify the synthesis of conductive polyaniline nanostructures and reduce the cost of the reaction.FTIR, UV-Vis, XRD and other structural characterization confirmed that the resultant nanostructured polyaniline are Doped state.It is found that the lower oxidation / reduction potential of iron salt makes the product have smaller diameter and higher conductivity and crystallinity.Different pairs of anions have a certain influence on the morphology of the polyaniline product, The structure and properties of the product has little effect on the ratio of iron salt and aniline monomer morphology and conductivity of polyaniline have a greater impact.