“…[48] Therefore, the same classification for labeling these tubes was used as for nanotubes rolled up from hexagonal compounds (graphite, h-BN, metal dichalcogenides, etc.). [7] Depending on the rolling direction B in the 2D lattice B ¼ na 1 þ ma 2 (a 1 , a 2 are lattice vectors of the hexagonal lattice, Figure 1), three classes of nanotubes can be constructed: zigzag (n,0), armchair (n,n), and "chiral" (n,m) nanotubes with n 6 ¼ m. The main attention was focused on the chirality (12,0) as the chirality of natural and synthetic imogolites in the majority of earlier reports, which unit cell consists of 336 atoms. To perceive the permanence of registered phenomena, the models of (8,0) and (14,0) imogolite nanotubes were studied, containing 224 and 392 atoms in the unit cells, respectively.…”