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

Table 1

The rate constant values for the TiO₂ nanoparticle samples with and without heat treatment and the mean particle diameter determined from SEM for samples without heat treatment.

Sample	Deposition Temperature (°C)	Heat Treatment Temperature (°C)	Rate Constant, 𝑘 (h^−1)	Mean Particle Diameter from SEM (nm)
A	300	—	0.28
B	300	300	2.13
C	300	400	3.82
D	400	—	0.64	76.5
E	400	400	5.27
F	500	—	5.09	34.0
G	500	400	3.34
H	500	500	7.04
I	600	—	5.35	31.7
J	600	400	1.64
K	600	600	7.46
L	700	—	5.89	24.1
M	700	400	2.70
N	700	700	7.12