Paper Title
Adsorption Removal Of Th (Iv) From Aqueous Solutions Using Inverse Spinel Nickel Ferrite Nanocomposite Based On Graphene Oxide (GONF)

Abstract
In the present study, synthesized GO based nickel ferrite (GONF) by chemical precipitation and was well characterized with suitable spectroscopy techniques in order to use for adsorption removal of Th(IV) from aqueous solutions. The synthesized GONF was well characterized using X-ray diffraction (XRD), Fourier transform-infrared resonance (FT�IR), and X-ray photoelectron (XPS) spectroscopes. The morphology, the surface area and pore volume of GONF was evaluated by scanning electron microscopy (SEM) and BET analysis, respectively. Batch adsorption of Th(IV) was successfully done by the prepared GONF and the kinetics studies revealed the sorption of Th(IV) onto GONF was well described by pseudo-second-order equation. The sorption equilibrium data of Th(IV) was well tune to the Langmuir isotherm model than the Freundlich and Temkin�s isotherm models. Hence, the sorption of Th(IV) onto GONF occurred through monolayer chemisorptions on homogeneous surface of GONF. The maximum adsorption capacities (Qmax) of the GONF for Th(VI) is 88.49 mg/g. Thermodynamic studies reveal that the sorption was increased as increase temperature from 298 to 328 K, indicates the chemisorptions. The overall obtained results demonstrated that the GONF as an effective sorbent for Th(IV) removal from aqueous acidic solutions. Keywords- Graphene oxide based nickel ferrite, Nanocomposite materials, Adsorption, Th(IV) removal