超声辐照条件下HCl掺杂聚苯胺纳米棒的结构和性能

摘要

HC1 doped polyaniline (PANI) nanorods were prepared by oxidation polymerization under ultrasonic irradiation, in which HCl and ( NH4 ) 2 S2 O8 acted as dopant and oxidant, respectively. The structure and performance of the materials were studied by Fourier transform infrared spedroscopy ( FT-IR) , transmission electron microscopy ( TEM ), X-ray diffraction ( XRD), four-probe method, thermo-gravimetry analysis ( TGA) and electrochemical workstation. The results show that HCl doped PANT nanorods prepared under ultrasonic irradiation have higher doping level and structural regularity with the diameter of about 50-65 ran. Compared with the traditional methods, the thermal stability of HCl doped PANI nanorods is much enhanced within the range of 270-500 ℃ and the electrical conductivity is increased to 0. 25 s/cm at room temperature. Also, the PANI nanorods prepared under ultrasonic irradiation have better capacitance behavior and electrochemical activity.S%在超声辐照条件下,以HCl为掺杂剂、(NH4)2S208为氧化剂,通过溶液聚合得到了HCI掺杂聚苯胺(PANI)纳米棒.采用傅里叶变换红外光谱(FTIR)、透射电子显微镜(TEM)、X-射线衍射(XRD)、四电极电导率仪、热重分析(TGA)和电化学工作站对材料的结构与性能进行研究.研究结果表明,超声辐照条件下HCI掺杂PANI具有较高的掺杂程度和结构规整度,形成直径为50～65nm左右的纳米棒状结构.与传统方法相比,超声辐照法所得材料的热稳定性在270～500℃有明显上升,室温电导率升至0.25s/cm,并具有较好的电容行为和较高的电化学活性.