Influence of particle size on the phonon confinement of TiO₂ nanoparticles

Figures & data

Figure 1. Raman spectrum of titanium dioxide nanoparticles annealed at different temperature.

Figure 2. (Colour online) Raman intensity calculated using phonon confinement model for different crystal sizes.

Figure 3. (Colour online) Raman modes E_g of the TiO₂ nanoparticles annealed at various temperatures.

Figure 4. XRD images of TiO₂ nanoparticles annealed at different temperatures: (a) as prepared; (b) annealed at 300°C; (c) annealed at 350°C; (d) annealed at 400°C and (e) annealed at 450°C.

Figure 5. TEM images of TiO₂ nanoparticles annealed at different temperatures.

Figure 6. Particle size distributions of TiO₂ nanoparticles annealed at different temperatures analysed by DLS.