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Preparation and Characterization of Polypyrrole/TiO2 Coaxial Nanocables

✍ Scribed by Xiaofeng Lu; Qidong Zhao; Xincai Liu; Dejun Wang; Wanjin Zhang; Ce Wang; Yen Wei

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
194 KB
Volume
27
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

Summary: We demonstrate in this communication that large‐scale coaxial nanocables of polypyrrole (PPy)/TiO~2~ can be obtained via three steps: (1) synthesis of TiO~2~ nanofibers by electrospinning; (2) physical adsorption Fe^3+^ oxidant on the surface of TiO~2~ nanofibers; (3) followed by polymerization of pyrrole (from vapor) on the surface of TiO~2~ nanofibers. During the synthesis, the PPy formed on TiO~2~ nanofibers as a template and formed PPy/TiO~2~ coaxial nanocables. TEM image proved that PPy (20 nm thickness) covered the surface of TiO~2~ nanofibers. Fourier‐transform infrared (FTIR), X‐ray photoelectron spectra (XPS), and X‐ray diffraction patterns (XRD) characterized the chemical structure of the coaxial nanocables. Surface photovoltage spectroscopy (SPS) revealed the surface properties of the PPy/TiO~2~ coaxial nanocables.

TEM image of individual PPy/TiO~2~ coaxial nanocable.

magnified imageTEM image of individual PPy/TiO~2~ coaxial nanocable.

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