Abstract
Large area highly uniform and ordered polypyrrole nanowire and nanotubearrays were fabricated by chemical oxidation polymerization with the help of a porousanodic aluminium oxide (AAO) template. Under 0.2 moL/L pyrrole (H2O) and 0.2 moL/LFeCl3 (H2O) pattern, polypyrrole nanowire arrays were obtained after 2.0 hourspolymerization reaction in a two-compartment reaction cell. When the reaction wasstopped after 15 minutes, polypyrrole nanotube arrays have been formed. The diameter,length and density of compositive nanowires and nanotubes could be controlled byparameters of AAO template.
Highlights
It is an unquestionable fact that nanomaterials possessed several unique properties superior to their bulky counterparts [1]
The anodic aluminium oxide (AAO) templates were fabricated by a two-step anodizing approach in 1.0 moL/L sulfuric acid electrolyte with 20 V steady potential at 0 ~ 5 oC
In the chemical oxidation polymerization reaction, ammonium persulfate ((NH4)2S2O8) and ferric chloride (FeCl3) were used as oxidants. 0.2 moL/L oxidant aqueous solution was placed in the right side compartment
Summary
It is an unquestionable fact that nanomaterials possessed several unique properties superior to their bulky counterparts [1]. Template-based synthesis was well suited for producing arrays with uniform diameters and high aspect ratio wires [2]. To our knowledge, polypyrrole nanowires or nanotube arrays were less reported than films [5]. Due to the excellent biologic compatibility, catalysis, stability and conductivity, polypyrrole was considered fabricating nanowire and nanotube arrays for using biosensors.
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