摘要
采用化学氧化法制备水杨酸掺杂聚苯胺纳米管,获得约15℃下制备聚苯胺纳米管的反应条件.表征产物的结构与性能,并讨论聚苯胺纳米管的形成机制.结果表明:当水杨酸与苯胺物质的量比为0.06时,合成了管长大于1μm,外径约150nm,内径约为30nm的圆型孔腔聚苯胺纳米管.随着水杨酸和苯胺物质的量比减少,产物由一维结构的纳米纤维和纳米管向二维结构的纳米片转变,这种转变可归因于反应体系中水杨酸与苯胺盐在水溶液中形成球型胶束的能力.该聚苯胺纳米管室温下电导率为8.66×10-2 S/cm,并显示出良好的电化学活性.
Polyaniline nanotubes doped with salicylic acid were synthesized by chemical oxidative polymer- ization. The synthesis condition of polyaniline nanotubes prepared at 15 ℃ was obtained. The structure and performance were characterized, and the synthesis mechanism of polyaniline nanotube was discussed. The results showed that uniform polyaniline nanotube with round cavity was synthesized when the molar ratio of salicylic acid to aniline was 0. 06. Their length was more than 1/zm, and outer diameter and inner diameter were about 150 nm and 30 nm, respectively. The one-dimensional nanofibers and nanotubes transformed into two-dimensional nonasheets as the molar ratio of salicylic acid to aniline decreased. The transformation was attributed to the ability of salicylic acid and aniline salt to form spherical micella in a- queous solution. The conductivity of the nanotube was about 8. 66 × 10-2S/cm at ambient temperature, and the good electrochemical activity was also presented.
出处
《兰州理工大学学报》
CAS
北大核心
2015年第2期31-34,共4页
Journal of Lanzhou University of Technology
基金
甘肃省自然科学基金(1208RJZA162)
关键词
聚苯胺
化学氧化法
纳米结构
polyaniline
chemical oxidative polymerization
nano-structure
