Three Possible Encapsulation Mechanics of TiO₂ Nanoparticles into Single-Walled Carbon Nanotubes

Figure 7

Potential energy for TiO₂ with radius 𝑎=10 Å encapsulated into a carbon nanotube with radius (a) 𝑏=12.7 Å and (b) 𝑏=13.5 Å at defect opening on the tube wall where the distance 𝑥 is fixed.

(a)

(b)