Table 2 UV–vis absorbance and wavelength of TiO2–CuO–clay soil composites.

From: Enhanced photocatalytic degradation of 2,4-dichlorophenoxyacetic acid from freshwater and industrial wastewater using TiO2–CuO–clay soil nanocomposites

Ratio of TiO2–CuO–clay soil

Absorbance

Transmittance

Wavelength (nm)

2:3:7

0.09 ± 0.012

64 ± 0.23

150

0.094 ± 0.30

63 ± 0.11

250

0.095 ± 0.20

62.5 ± 0. 30

350

0.097 ± 0.31

62.10 ± 0.25

450

4:3:5

0.190 ± 0.40

89 ± 0.85

150

0.191 ± 0.31

90 ± 0.20

250

0.194 ± 0.51

90 ± 0.56

350

0.197 ± 0.31

82 ± 0.35

450