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Keywords:

  • Alumina;
  • Ceramics;
  • Nanotubes;
  • Vapor–solid synthesis
Thumbnail image of graphical abstract

Single-crystalline Al4O4C nanowires can be synthesized at a high yield via a simple high-temperature solid reaction. A two-step method has been developed to convert the prepared nanowires into single-crystalline α-Al2O3 nanotubes (see Figure). These nanotubes may find high-temperature applications due to their unmatched refractory properties.