β-萘磺酸掺杂聚苯胺纳米粒子的固相反应法制备及其表征

利用固相反应法制备了 β 萘磺酸掺杂的聚苯胺纳米粒子 ,并以红外光谱 (FTIR) ,扫描电子显微镜(SEM) ,透射电镜 (TEM) ,X 射线衍射 (XRD)以及粉末微电极等测试方法对其进行了表征 .结果表明 ,固相反应法合成的 β 萘磺酸掺杂聚苯胺粒子直径为 30～ 5 0nm ,聚苯胺分子链排列有序 ,晶化率较好 .粉末微电极的循环伏安测试表明 ,β 萘磺酸掺杂聚苯胺有较好的电化学活性 .

SOLID-STATE REACTION SYNTHESIS AND CHARACTERIZATION OF POLYANILINE NANOPARTICLES DOPED WITH β-NAPHTHALENESULFONIC ACID

Nanoparticles of polyaniline have attracted increasing attention for their smaller size and large surface area which may promote more effective doping,overcome the problem of process ability and lead to special electrical,optical,opto-electrical properties.In this work,polyaniline nanoparticles doped with β-naphthalenesulfonic acid were prepared by a novel solid-state reaction synthesis method.Polyaniline was characterized by FT-IR,XRD and cyclic voltammogram on powder cavity microelectrode.The morphology of polyaniline particles was studied through SEM and TEM,and the electrical conductivity of pellets formed with polyaniline nanoparticles was measured by using a four-probe apparatus.Results showed that the average size of polyaniline particles doped with β-naphthalenesulfonic acid obtained by this method was 30～50?nm,and the polyaniline particles were spherical in shape.The measured electrical conductivity of pellets formed with polyaniline nanoparticles was 17 S/cm.XRD measurements indicated that the polyaniline nanoparticles were crystalline.The cyclic voltammogram of polyaniline naoparticles on powder microelectrode showed good electrochemical properties.