70ºC
400ºC
600ºC
pH
3
1% 5% 10%
153 – 31
< 5 nm
159 - 0. 26
< 5 nm 156 – 29
< 5nm
145 – 13.5
10 nm
147 – 17
7 nm 148 – 18
6 nm
143.5 – 9
23 nm
144.5 – 11.5
14 nm
149 – 15.5
8 nm
144 – 11
15 nm
148 – 17
7 nm
pH
9
0.1% 1% 5% 10%
- 148.5 – 21
5 nm
150.5 -. 28
< 5 nm 151 – 29
< 5nm
- 146 – 14
9 nm
150.5 – 18
6 nm
155 – 22.5
< 5 nm
149 – 17
7 nm
144.5 – 10
18 nm
143.5 – 9.5
20 nm
145.5 – 13
10 nm 145 – 13
10 nm
Table 1:
Raman shift (cm
-1
, ± 1 cm
-1
) and FWHM (± 0.5 cm
-1
) of the main anatase Raman band and estimated crystal size (nm, ± 25%) for the different samples. Different values are reported for the samples with high size dispersion.
