Table 1. Comparison of the photocatalytic efficiency of various photocatalytic materials with the CaO@AC nanocomposite.

Sr. No.	Photocatalytic material	Light source	Dosage	Degradation efficiency	Time	Ref.
1	TiO2/C	Visible light	10 mg	100% RhB	60 min	65
2	Co–NiF/AC	16 W low-pressure mercury lamps	100 mg	91% RhB	60 min	66
3	WO3/AC	400 W power metal halide lamp	10 mg	76% RhB	180 min	67
4	AC/Ag	80 W lamp	60 mg	96.09% MB	100 min	45
5	AC/CaO	—	500	MB	350 min	68
6	CaO/AC/ZnO	100 W incandescent light bulb	50 mg	96.7% MB	120 min	69
7	AC/CaO/Fe3O4	—	200	Formaldehyde	150	70
8	CaO@AC	Sunlight	0.05 grams	95%, 74%, and 86% for RhB, MB, and RB	40 min	This work