Photo-Fenton Degradation of RB5 Dye in Aqueous Solution Using Fe Supported on Mexican Natural Zeolite

Table 4

Mossbauer parameters of MNZ/Fe samples.

Sample	(mm/s)	(mm/s)	(mm/s)	Fe	Relative area (%)
Uncalcined MNZ/Fe	1.13	1.73	0.51	Fe^2+	45.5
	0.24	0.62	0.51	Fe^3+	54.5
Calcined MNZ/Fe at 700°C	0.63	1.47	0.50	Fe^2+	15.7
	0.11	1.39	0.50	Fe^3+	13.0
	0.29	1.22	0.50	Fe^3+	71.3

 = isomer shift relative to α-Fe at room temperature;  = quadrupole splitting;  = line width.