摘要
在超声辐照条件下,以HCl为掺杂剂、(NH4)2S2O8为氧化剂,通过溶液聚合得到了HCl掺杂聚苯胺(PA-NI)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HCl掺杂PANI具有较高的掺杂程度和结构规整度,形成直径为50～65 nm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0.25 s/cm,并具有较好的电容行为和较高的电化学活性.
HCl doped polyaniline（PANI） nanorods were prepared by oxidation polymerization under ultrasonic irradiation,in which HCl and（NH4）2S2O8 acted as dopant and oxidant,respectively.The structure and performance of the materials were studied by Fourier transform infrared spectroscopy（FTIR）,transmission electron microscopy（TEM）,X-ray diffraction（XRD）,four-probe method,thermogravimetry analysis（TGA） and electrochemical workstation.The results show that HCl doped PANI nanorods prepared under ultrasonic irradiation have higher doping level and structural regularity with the diameter of about 50—65 nm.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 conductivitiy 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.
出处
《纳米技术与精密工程》
EI
CAS
CSCD
2012年第3期237-242,共6页
Nanotechnology and Precision Engineering
关键词
聚苯胺
纳米棒
超声辐照
性能
polyaniline
nanorod
ultrasonic irradiation
performance
