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. 2023 Jul 15;8(29):26379–26390. doi: 10.1021/acsomega.3c02911

Table 2. Obtained Isotherm Parameters for Adsorption of Pb²⁺ and Cd²⁺ Ions over Fe–MOF and Co_x–Fe_1–x–MOFs.

		Langmuir isotherm				Freundlich isotherm
metal ion	sample	q_m (mg/g)	K_L (L/mg)	R²	R_L	K_F (mg/g)	n	R²
Pb²⁺	Fe–MOF	120.8	0.06	0.9805	0.14	24.32	2.61	0.9926
	Co_0.25–Fe_0.75–MOF	179.2	0.26	0.9908	0.04	33.54	2.30	0.9231
	Co_0.50–Fe_0.50–MOF	198.6	0.44	0.9964	0.02	38.63	2.13	0.9183
	Co_0.75–Fe_0.25–MOF	169.3	0.16	0.9903	0.06	33.40	2.34	0.9231
Cd²⁺	Fe–MOF	115.3	0.03	0.9974	0.33	12.9	1.97	0.9698
	Co_0.25–Fe_0.75–MOF	170.8	0.13	0.9956	0.08	49.9	2.49	0.9729
	Co_0.50–Fe_0.50–MOF	183.5	0.19	0.9851	0.05	70.2	2.99	0.9789
	Co_0.75–Fe_0.25–MOF	152.9	0.05	0.9905	0.20	28.2	1.99	0.9882