Effect of Postdeposition Heat Treatment on the Crystallinity, Size, and Photocatalytic Activity of TiO_𝟐 Nanoparticles Produced via Chemical Vapour Deposition

Figure 2

SEM micrographs (left) and respective nanoparticle size distribution histograms (right) for TiO₂ nanoparticle samples deposited by CVD at (a) 400°C, (b) 500°C, (c) 600°C, and (d) 700°C.

(a) sample 400°C

(b) sample 500°C

(c) sample 600°C

(d) sample 700°C