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

Figure 6

Photocataytic activity for TiO₂ nanoparticle samples deposited at different deposition temperatures with and without heat treatment—(a) 300°C, (b) 400°C, (c) 500°C, (d) 600°C, (e) 700°C, and (f) Photocatalytic activity of samples deposited at different deposition temperatures and heat treated at 400°C. Graphs fitted with linear trend line from which the rate constants were determined.

(a) Sample 300°C

(b) Sample 400°C

(c) Sample 500°C

(d) Sample 600°C

(e) Sample 700°C

(f) Samples Heat Treated at 400°C