Table 2. Pseudo-First-Order Rate Constant Values of g-C₃N₄/Cu₂O with Different Amounts of g-C₃N₄ for the Degradation of MB and RhB under Visible Light Irradiation.

S. No	Catalyst	Rate constants (1 × 10–3) for MB	Rate constants (1 × 10–3) for RhB
1	Cu2O	1.33	1.81
2	g-C3N4	1.91	2.71
3	CN/Cu-1	3.29	3.50
4	CN/Cu-2	4.60	4.95
5	CN/Cu-3	5.96	5.68
6	CN/Cu-4	7.20	6.56
7	CN/Cu-5	11.2	12.5
8	CN/Cu-6	9.76	7.48