Table 2 Band gap energies of "bulk" CdS and lamellar CdS/surfactant nanocomposites synthesised for this work

CdS "bulk" (control sample)

-

2.34 (theoretical value, 2.42) [19]

Cd₁S_0.54X_2.58(OH)_0.24(C₁₉H₄₂N)_1.9·6.3H₂O

6.62

2.44

Cd₁S_0.93X_2.25(OH)_0.09(C₁₉H₄₂N)_2.2·2.9H₂O

8.03

2.47

Cd₁S_0.95X_1.7(OH)_0.05(C₁₉H₄₂N)_1.65·3.6H₂O

9.21

2.46

Cd₁S_0.95X_0.74(OH)_0.09(C₁₉H₄₂N)_0.73·0.8H₂O

9.36

2.39

Cd₁S_0.99X_0.18(C₁₉H₄₂N)_0.16

12.51

2.56

Cd₁S_0.58X_1.49(OH)_0.29(C₂₁H₄₆N)_0.94·4.6H₂O

6.96

2.49

Cd₁S_0.62X_0.99(OH)_0.32(C₂₁H₄₆N)_0.55·1.9H₂O

7.54

2.50

Cd₁S_0.71X_0.83(OH)_0.22(C₂₁H₄₆N)_0.47·2.1H₂O

8.97

2.51

Cd₁S_0.73X_0.79(OH)_0.21(C₂₁H₄₆N)_0.46·0.9H₂O

9.79

2.46

Cd₁S_0.97X_0.51(OH)_0.08(C₂₁H₄₆N)_0.53·1.6H₂O

10.00

2.47