Preparation of High Activity Ga and Cu Doped ZnS by Hydrothermal Method for Hydrogen Production under Visible Light Irradiation
Table 1
Properties of ZnS and ZnS doped samples.
Entry
Samples
valuea (Å)
Lattice parameter, (nm)
Crystallite size, (nm)
Band gap (eV)d
Surface area (m2/g)
1
ZnS
3.1121
5.3903
11.76
3.25
57
2
Cu(0.1)-ZnS
3.1068
5.3811
12.51
1.75
39
3
Ga(0.1)-ZnS
3.0857
5.3447
4.48
3.02
113
4
Ga(0.1),Cu(0.01)-ZnS
3.1015
5.3719
4.47
2.48
84
5
Ga(0.1),Cu(0.03)-ZnS
3.1015
5.3719
4.65
2.32
14
6
Ga(0.1),Cu(0.05)-ZnS
3.1015
5.3719
4.80
2.20
12
The value was calculated from . The value was calculated from . The value was calculated from Scherrer equation. The value was obtained from Tauc Plot.