Adsorption of Thorium (IV) from Aqueous Solution by Htpop Containing Active Imine

Bis (diphenyl phosphate) imine (Htpop) was synthesized using a simple one-step solvent method to remove thorium (IV) from aqueous solutions. The structure, functional group displacement, morphological differences, and elemental composition of the samples were analyzed using characterization techniques such as NMR, FTIR, SEM, EDS, and XPS. According to the batch experiment, when pH= 4.0 and temperature was 298 K, the adsorption equilibrium can be reached within 40 min, and the adsorption capacity was 189.32 mg center dot g(-1). The adsorption process conforms to the quasi-second-order kinetic model (R-2= 0.9959) and Langmuir model (R-2= 0.9971). Thermodynamic data ((sic)H-0< 0, (sic)G(0)< 0) indicate that the adsorption behavior of thorium (IV) in Htpop was spontaneous and exothermic.

Automated summary

Bis (diphenyl phosphate) imine (Htpop) was synthesized using a one-step solvent method for thorium (IV) removal from aqueous solutions. Characterization techniques such as NMR, FTIR, SEM, EDS, and XPS were used to analyze the structure, functional group displacement, morphological differences, and elemental composition. The adsorption equilibrium was reached within 40 minutes at pH=4.0 and temperature of 298 K, with an adsorption capacity of 189.32 mg center dot g(-1). The adsorption process followed the quasi-second-order kinetic model (R-2=0.9959) and Langmuir model (R-2=0.9971). The thermodynamic data ((sic)H-0<0, (sic)G(0)<0) indicated that the adsorption of thorium (IV) in Htpop was spontaneous and exothermic.