Fabrication of Fe₂O₃@polypyrrole nanotubes and the catalytic properties under the ultrasound

Abstract

Fe₂O₃@polypyrrole nanotubes (Fe₂O₃@PPy nanotubes) have been successfully prepared by in-situ polymerization of the pyrrole on the surface of Fe₂O₃ nanotubes (Fe₂O₃-NTs), via using L-Lysine as modified surfactant. Hollow PPy nanotubes were also produced by dissolution of the Fe₂O₃ core from the core/shell composite nanotubes with 1 mol·L⁻¹ HCl. Scanning electron microscopy(SEM), transmission electron microscope (TEM), selective-area electron diffraction (SAED), X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy(FT-IR) confirmed the formation of Fe₂O₃-NTs and Fe₂O₃@PPy core/shell nanotubes. Its catalytic properties were investigated under the ultrasound. The results of UV-vis spectroscopy (UV) demonstrated Rhodamine B (RhB) can be efficiently degraded by Fe₂O₃ @PPy nanotubes.

Keywords

Fe₂O₃ nanotubes / composites / polypyrrole / polymerisation / catalysis / rhodamine B

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