Lithium Adsorption Using Graphene Oxide: Modeling, Regeneration, and Mechanistic Insights.

ABSTRACT: Graphene oxide (GO) was synthesized using the Hummers method and evaluated for lithium-ion removal from aqueous solutions. Characterization via X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectroscopy, field-emission scanning electron microscopy (FE-SEM), and X-ray diffraction (XRD) confirmed the presence of oxygen-containing functional groups (C-O-C, C=O), which act as active adsorption sites. BET analysis revealed a surface area of 232 m²/g and a pore volume of 0.4 cm³/g, indicating its high porosity. Lithium adsorption was tested using synthetic Li-doped solutions under controlled conditions. Kinetics and equilibrium studies demonstrated that the process followed the pseudo-second-order model and the Redlich-Peterson isotherm, achievin

SUBMITTER: Abu-Nada A 

PROVIDER: S-EPMC12300906 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature