Table 2. Comparison of catalytic efficiency of Ag₂O@CuFe₂O₄@g-C₃N₄ catalyst with previous literature for the reduction of MB.

Organic dye	Catalyst	k app (s−1)	Ref.
MB	g-C3N4/NiFe2O4 (1 g l−1, r.t.)	7.33 × 10−3	16
MB	NiO-g-C3N4 (0.5 g l−1, r.t.)	8.33 × 10−3	16
MB	g-C3N4/ZnO (0.5 gl−1, r.t.)	3.10 × 10−3	16
MB	CaFe2O4/g-C3N4 (20 wt% CaFe2O4, 2 g l−1, r.t.)	0.288 × 10−3	16
MB	g-C3N4 quantum dots/ZnO nanosheets (0.125 g l−1, r.t.)	0.855 × 10−3	16
MB	Graphite carbon coating hollow CuFe2O4 spheres (0.1 g l−1, r.t.)	0.633 × 10−3	16
MB	Ag2O@CuFe2O4@g-C3N4-1 (0.5 g l−1, r.t.)	1.511 × 10−3	This work
	Ag2O@CuFe2O4@g-C3N4-2 (0.5 g l−1, r.t.)	2.196 × 10−3
	Ag2O@CuFe2O4@g-C3N4-3 (0.5 g l−1, r.t.)	4.726 × 10−3
	Ag2O@CuFe2O4@g-C3N4-4 (0.5 g l−1, r.t.)	2.998 × 10−3
	Ag2O@CuFe2O4@g-C3N4-5 (0.5 g l−1, r.t.) time	2.295 × 10−3