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以β-萘磺酸(NSA)为掺杂剂,采用电化学无模板法制备了聚吡咯(PPy)纳米线.研究了NSA浓度、吡咯(Py)单体浓度及反应温度对PPy纳米线形貌的影响.分别采用场发射扫描电子显微镜(FE-SEM)和拉曼光谱对PPy纳米线的结构形貌和化学结构进行了表征.结果表明,利用电化学无模板法可得到中空的PPy纳米线;NSA浓度会影响PPy纳米线的取向性;增大Py单体浓度,可制得圆锥状PPy纳米线;低温有利于合成形状细长、紧密堆积的PPy纳米线.PPy纳米线形貌受游离Py浓度及Py-NSA胶束数量影响,通过调节NSA浓度、Py浓度及反应温度改变游离Py浓度及Py-NSA胶束数量,可制得不同形貌的PPy纳米线.
Polypyrrole (PPy) nanowires were prepared by electrochemical template-free method using β-naphthalenesulfonic acid (NSA) as dopant.The effects of concentration of NSA, concentration of pyrrole and reaction temperature on the morphology of PPy nanowires The morphologies and chemical structures of PPy nanowires were characterized by field emission scanning electron microscopy (FE-SEM) and Raman spectroscopy, respectively. The results show that PPy nanowires can be obtained by electrochemical template-free method The concentration of NSA can affect the orientation of PPy nanowires, and the pyramidal PPy nanowires can be obtained by increasing the concentration of Py monomer. The PPy nanowires with slender shape and close packing can be synthesized at low temperature. Free Py concentration and the number of Py-NSA micelles. The PPy nanowires with different morphologies can be prepared by adjusting the concentrations of NSA, Py and reaction temperature to change the concentration of Py and the quantity of Py-NSA micelles.