Table 2. Thermodynamic parameters for CV adsorption^a.

Adsorbents	T (K)	K L	ln KL	ΔG°-L (kJ mol−1)	ΔG°-NL (kJ mol−1)	ΔH°-L (kJ mol−1)	ΔH°-NL (kJ mol−1)	ΔS°-L (J mol−1 K−1)	ΔS°-NL (J mol−1 K−1)	R 2-L	R 2-NL
Mt-Ag/Sn@CeO2	298	22.766	3.1253	−7.235	−7.703	−50.33	−69.90	−144.62	−208.71	0.977	0.974
	308	7.358	1.9958	−5.788	−5.615
	318	4.627	1.5318	−4.342	−3.528
	328	3.428	1.2319	−2.896	−1.441
Ag/Sn@CeO2	298	8.106	2.0926	−5.029	−5.153	−43.02	−53.91	−104.00	−116.64	0.926	0.990
	308	4.514	1.5072	−3.989	−3.987
	318	2.772	1.0197	−2.949	−2.820
	328	2.190	0.7841	−1.909	−1.654

^a K _L is the Langmuir equilibrium constant obtained from isotherm fitting at each temperature. L = linear regression; NL = nonlinear regression.