100
200
300
400
500
600
700
800
900
Intensity (a.u.)
0.1 % w Ag
1 % w Ag
10 % w Ag
60
120
180
Intensity (a.u.)
cm
-1
cm
-1
0.1 % w Ag
1 % w Ag
10 % w Ag
(a)
(b)
Fig. 3.4 Raman spectroscopy data to Ag-TiO 2 samples (a) from 900 to 100 cm
-1 and (b) zoom
from 250 to 60 cm
-1
Table 3.3 Bandgap values to
the TiO 2 and Ag-TiO 2
samples
Material
Bandgap (eV)
TiO 2
3.2
0.1 %w Ag
3.15
1 %w Ag
3.15
10 %w Ag
3.15
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