Electrochemical synthesis of polypyrrole nanowires

摘要: Nanomaterials have wide-ranging applications in a variety of areas, including chemistry, physics, electronics, optics, materials science, and the biomedical sciences. Potential several fields such as micro-devices, catalysis, sensors, artificial organs are envisaged. Synthetic methods used for preparation one-dimensional nanomaterials consisted template, surfactant-assistant, self-assembly systems. Electronically conductive polymers polypyrrole (Ppy) been investigated second batteries [1], sensors actuators [2, 3], optical devices [4]. Many studies made on morphologies, nucleation growth mechanisms Ppy [5, 6]. nanowires nanotubes mainly prepared by template [7–16]. It is noteworthy that nanofibers nanotubules synthesized “template method” shown higher conductivity strength over conventional bulk-synthesized forms [17, 18]. can also be obtained at edge lipid-tubules [19], steps pits defects highly-ordered-pyrolytic-Graphite (HOPG) [20]. HOPG under-potential, with diameters no greater than 10 nm; its pattern two-dimensional type. In present work, we developed new method to synthesize electrochemical polymerization presence polyanion(poly(maleic acid-co-vinyl pyrrolidone)). The electropolymerization was conducted one-compartment cell using saturated calomel electrode (SCE) reference electrode, platinum coil counter graphite rod diameter 8 mm working electrode. experiments were performed TD 73000 Electrochemical System controlled computer. scanning electron microscope (SEM) photographs Philips XL30. solution contained 20 mg poly(maleic pyrrolidone), 60 lithium perchlorate 50 × 10−9 m3 pyrrole 5 10−6 aqueous solution. electrogenerated either potential step experiment or cyclic voltammetry. Fig. 1 shows different charge consumption during electropolymerization.