高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (6): 1118.

• 论文 • 上一篇    下一篇

脉冲电流法电解合成聚苯胺

焦树强1, 彭霞辉2, 周海晖1, 陈金华1, 旷亚非1   

  1. 1. 湖南大学化学化工学院, 长沙 410082;
    2. 长沙大学化学系, 长沙 410003
  • 收稿日期:2002-04-12 出版日期:2003-06-24 发布日期:2003-06-24
  • 通讯作者: 旷亚非(1955年出生),男,教授,主要从事应用电化学、材料表面处理研究.E-mail:yaifeik@163.com E-mail:yaifeik@163.com
  • 基金资助:

    化学生物传感与计量学国家重点实验基金(批准号:2002-01)资助

Electrodepositing Polyaniline by Pulse Galvanostatic Method

JIAO Shu-Qiang1, PENG Xia-Hui2, ZHOU Hai-Hui1, CHEN Jin-Hua1, KUANG Ya-Fei1   

  1. 1. College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China;
    2. Department of Chemistry, Changsha University, Changsha 410003, China
  • Received:2002-04-12 Online:2003-06-24 Published:2003-06-24

摘要: 在0.2mol/L苯胺和0.5mol/LH2SO4介质中采用脉冲电流法电解合成聚苯胺(PANI)膜.循环伏安研究表明,与恒电流法相比,脉冲电流法制得的PANI膜具有更好的电化学活性.扫描电镜(SEM)对膜层的微观形貌观察发现,这种特殊的聚苯胺膜层呈纳米纤维状结构,不同于恒电流法制取的颗粒状PANI膜.讨论了脉冲通断比和频率对于膜层性能的影响.

关键词: 聚苯胺, 脉冲电流法, 恒电流法, 循环伏安

Abstract: A new method, pulse galvanostatic method(PGM) is proposed to synthesize polyaniline(PANI) films in 0.2 mol/L aniline and 0.5 mol/L H2SO4 aqueous solution. Cyclic voltammogram in 0.5 mol/L H2SO4 solutions show that the films of PANI obtained by PGM are more electroactive than those by galvanostatic method(GM). The micrograph of polyaniline films has been investigated by scanning electron microscopy. The nano-fibrous structure can be observed for the polyaniline films by PGM, while the polyaniline films by GM show a granular structure. Additionally, the influence of ton/toff and frequency of PGM on the properties of polyaniline has also been discussed. Electrochemical research shows that the anodic peak current of CVs has a maximum value in the plot of peak current density relating to ton/toff. Meanwhile, the peak current increases with the imcrease of frequency.

Key words: Polyaniline, Pulse galvanostatic method(PGM), Galvanostatic method(GM), Cyclic voltmmogram

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