Removal of Rhodamine 6G in the absence of UV radiation using ceria nanoparticles (CeO2-NPs)

[Display omitted] •CeO2 nanoparticles (CeO2-NPs) were obtaining by modified polymeric complex method.•The CeO2-NPs synthesized showed an efficient removal of Rhodamine 6 G dye without UV irradiation.•The adsorption kinetic of R6 G by CeO2-NPs was adequately described by a pseudo-second-order equation.•In the aqueous system R6 G - CeO2-NPs studied reactive adsorption of the dye was presented. In this work, the capacity to removal rhodamine 6 G (R6 G), in the absence of UV radiation, using cerium dioxide nanoparticles (CeO2-NP) was determined. The synthesized NPs were characterized by X-ray powder diffraction (XRD) and X-ray photoelectron (XPS), Raman and photoluminiscence spectroscopies. The results indicated that CeO2 powders had a crystallite size between ∼ 12 and ∼ 14 nm. The presence of the peroxide species (O22-) η2, superoxide (O2-) η1, adsorbed species O2δ (0