Experimental data for the adsorption and separation of rare earth elements using mesoporous silica-grafted graphene oxiden reasonable request.
Description
This dataset contains raw and processed experimental data supporting the adsorption and selective separation of La(III), Ce(III), and Y(III) ions using mesoporous silica–grafted graphene oxide (MS–GO). The data include adsorption kinetics, equilibrium isotherms, selectivity studies, characterization results (XRD, FTIR, SEM, TEM), and application to diluted rare earth leach liquor solutions.
Files
Steps to reproduce
Preparation of graphene oxide (GO): Synthesize graphene oxide using the modified Hummers’ method or use commercially available GO with comparable specifications. Synthesis of MS–GO composite: Disperse GO in deionized water by ultrasonication. Functionalize GO with mesoporous silica via covalent grafting using a sol–gel method with tetraethyl orthosilicate (TEOS) as the silica precursor, following the conditions described in the manuscript. Material characterization: Characterize the synthesized MS–GO using SEM and TEM for morphology, XRD for crystallinity, and FT-IR for functional group identification. Preparation of REE solutions: Prepare aqueous solutions of La(III), Ce(III), and Y(III) at desired concentrations using analytical-grade salts. Adjust solution pH using dilute HCl or NaOH. Batch adsorption experiments: Contact a known mass of MS–GO with REE solutions under constant agitation at room temperature. Vary contact time and initial metal concentration according to the experimental design. Analysis of residual concentrations: Separate the solid and liquid phases by filtration or centrifugation and analyze residual REE concentrations using ICP-OES or AAS. Data processing and modeling: Calculate adsorption capacities and removal efficiencies. Fit equilibrium data using Langmuir and Freundlich isotherm models and kinetic data using pseudo-first-order and pseudo-second-order models. Leach liquor application: Apply the optimized adsorption conditions to diluted rare earth leach liquor solutions and analyze adsorption performance using the same procedures.
Institutions
- Nuclear Materials Authority