TEM images of (a and b) single-, (c and d) two- and (e and f) multi-walled boron-containing nanotubes synthesized using different methods: (a–d) triisopropyl borate decomposition; (e and f) with ethanol and triethyl borate. The technology of the nanotubes shown in Figs (a and b) is described in [39]; (c and d) in [40]; (e and f) in [14]

 
 
  Part of: Boroznin SV (2022) Carbon nanostructures containing boron impurity atoms: synthesis, physicochemical properties and potential applications. Modern Electronic Materials 8(1): 23-42. https://doi.org/10.3897/j.moem.8.1.84317