Preparation and characterization of one-dimensional SiC–CNT composite nanotubes

One-dimensional silicon carbide–carbon nanotube composite was fabricated using a direct solid reaction process between pure silicon powders and carbon nanotubes at temperatures ranging from 1300 to 1400 °C. Scanning electron microscopy, X-ray diffraction, Raman scattering, and cathodoluminescence techniques were used to characterize their structures. The as-prepared composite products have shown pronounced luminescent properties with two emission bands centered at 2.3 eV and 2.9 eV by room-temperature cathodoluminescence.

Research Highlights
► SiC-C nanotube composite was directly fabricated from silicon powders and CNTs.
► The outer diameter of the composite nanotubes is approximately 60-100 nm.
► The SiC-C composites have shown two emission bands centered at 2.3 eV and 2.9 eV.