Table 4. Comparison of the photocatalytic degradation efficiencies of the synthesized nanocomposites with those reported in the literature.

Catalyzer	Pollutant	Source of light	Degradation rate (%)	Degradation time (min)	Ref.
TiO2	MB	LED	88	120	52
TiO2	MB	UV-vis	89	120	53
TiO2	Methyl orange	UV-vis	20	150	56
CuO	Methyl orange	Sunlight	65	60	54
CuO	MB	UV-vis	91	12	55
ZnO	MB	UV	95	240	48
ZnO	Methyl orange	UV	83.99	120	49
Cu-doped TiO2	MB	UV	82	90	50
Ag	MB	Sunlight	95	4320	51
Ag	MB	UV light	95	—	47
CuO	MB	UV	—	—	This study
CuO–Ag			89.93	180
CuO–Ag–TiO2			90.85	195
CuO	TC		60.18	150
CuO–Ag			71.85	195
CuO–Ag–TiO2			89.34	90