Graphene oxide/cellulose composite for enhanced adsorption of Ce(III) from aqueous solution

A high-efficiency composite adsorbent was synthesized by mixing cellulose and graphene oxide (GO) in the lithium chloride/N,N-dimethyl-acetamide system. The cellulose/GO (D-RCGO) characterized scanning electron microscopy, Fourier transform infrared spectroscopy, elemental analysis, thermal gravimetric analysis. influences of various parameters on removal Ce(III), such as dosage, temperature, initial Ce(III) concentration, contact time, pH, were optimized using a range batch adsorption experiments. Adsorption kinetics displayed behavior according to Langmuir isotherm model pseudo-second-order model. X-ray photoelectron spectroscopy analysis showed that two peaks Ce-3d almost disappeared after desorption NaCl solution, which indicated belonged ion exchange mechanism. Furthermore, theoretical maximum capacity onto D-RCGO 225.8 mg·g-1. This work suggested membranes could serve an effective eco-friendly for rare earth pollutant wastewater treatment.