| 초록 |
Porous materials as a solid-phase sorbent for the extraction of rare earth elements (REEs) are gaining attention. Among the materials, metal-organic frameworks (MOFs) are emerging as an important functional material for effective extraction REEs due to their high surface area, porosity, and diverse functionalization available. In this work, we prepared a chromium-based MIL-101, and its derivatives with organic functional groups; MIL-101-NH2, MIL101-ED, MIL101-DETA, and MIL-101-PMIDA (PMIDA; N-(phosphonomethyl) iminodiacetic acid hydrate), and explored their effectiveness in separation and recovery of REEs from aqueous solutions. The prepared materials were characterized by various analyses to confirm the successful implementation of the functional groups. The sorption of REEs onto the prepared materials as a function of solution pH, contact time, initial concentration of REEs was studied in detail. The chemical stability and loss of efficiency of these were investigated to evaluate their potential as a reusable sorbent for REEs. |
