Photocatalytic efficiency of 4% Cu–ZnO/S-g-C₃N₄ and some previous photocatalysts.

S. no.	Composite	Organic pollutant	Light source	Irradiation time (min)	Percent degradation	Ref.
1	Cu doped ZnO/Cu/g-C3N4	MB	Visible	60	98	64
2	Mn–ZnO/RGO	RhB	Visible	140	99	65
3	Ag-doped g-C3N4	MB	Xe lamp	120	96	66
4	ZnO/Fe3O4/g-C3N4	MO	Visible	150	97.87	67
5	Cu–TiO2	MB	Xe lamp	120	99	68
6	g-C3N4@Ag2ZrO3	RhB	Visible	120	99.70	69
7	Mn–ZnO/CSAC	BG	Solar	120	97.47	70
8	CZS-25	MB	Solar	90	93	Current study