Aegle marmelos Mediated Green Synthesis of Different Nanostructured Metal Hexacyanoferrates: Activity against Photodegradation of Harmful Organic Dyes

Table 4

Thermodynamic parameters of different dyes adsorption on various KMHCF nanoparticles.

Dye	Sample	Thermodynamic parameters
		(kJ mol^−1)			(kJ mol^−1)	(kJ mol^−1 K^−1)
		30°C	40°C	50°C
MG	KCuHCF	9.387	10.271	10.768	−1361.42	8.237
	KNiHCF	9.866	10.749	11.440	−1651.25	9.376
	KCoHCF	10.257	10.868	11.563	−1112.78	7.738
EBT	KCuHCF	12.097	12.604	13.051	−277.82	5.722
	KNiHCF	11.807	12.398	13.023	−773.59	7.237
	KCoHCF	12.634	13.164	13.773	−537.55	6.784
MO	KCuHCF	15.521	16.093	16.659	−202.054	6.828
	KNiHCF	15.019	15.555	16.102	−161.480	6.494
	KCoHCF	14.702	15.233	15.752	−142.235	6.306
MB	KCuHCF	7.414	7.814	8.250	−612.145	4.961
	KNiHCF	8.305	8.804	9.189	−600.317	5.284
	KCoHCF	9.190	9.643	10.027	−411.435	5.009

= Gibb’s free energy change, = enthalpy change, and = entropy change.