Preparation of a Modified PTFE Fibrous Photo-Fenton Catalyst and Its Optimization towards the Degradation of Organic Dye

Table 3

Impact of Cu/Fe molar ratio on leaching of metal ions from Cu-Fe bimetallic PTFE fiber complexes.

Samples	Metal ions concentration in solution (mg L^−1)
	pH = 3		pH = 7		pH = 9
	Fe(III)	Cu(II)	Fe(III)	Cu(II)	Fe(III)	Cu(II)
Fe-PAA-g-PTFE	0.93	0.00	0.82	0.00	0.29	0.00
Cu-Fe-PAA-g-PTFE; (i)	0.63	0.35	0.53	0.29	0.19	0.12
Cu-Fe-PAA-g-PTFE; (ii)	0.21	0.76	0.13	0.49	0.06	0.24
Cu-Fe-PAA-g-PTFE; (iii)	0.17	0.92	0.10	0.45	0.08	0.19
Cu-PAA-g-PTFE	0.00	1.25	0.00	0.89	0.00	0.31