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Preparation and Characterization of Polypyrrole/TiO 2 Coaxial Nanocables
Author(s) -
Lu Xiaofeng,
Zhao Qidong,
Liu Xincai,
Wang Dejun,
Zhang Wanjin,
Wang Ce,
Wei Yen
Publication year - 2006
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200500810
Subject(s) - polypyrrole , materials science , nanofiber , x ray photoelectron spectroscopy , fourier transform infrared spectroscopy , coaxial , chemical engineering , polymerization , electrospinning , surface modification , nanotechnology , composite material , polymer , electrical engineering , engineering
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.