Journal of Chemical Technology & Biotechnology, Год журнала: 2025, Номер unknown
Опубликована: Апрель 8, 2025
Abstract BACKGROUND Neodymium (Nd 3+ ) is a critical rare earth element, with widespread use in advanced technology, requiring effective recovery mechanisms due to increasing demand. A novel neodymium ion‐imprinted polymer (Nd‐IIP) was here synthesized from aminoguanidine‐functionalized phenolic resin as the functional matrix. Polymerization entailed Diels–Alder crosslinking mechanism, which created well‐organized and selective recognition sites for Nd ions. Stabilization following ensured high specificity, mechanical stability, reusability of polymer. RESULTS The introduction groups confirmed by Fourier transform infrared spectroscopy solid‐state 13 C nuclear magnetic resonance, while X‐ray photoelectron spectroscopy, scanning electron microscopy, Brunauer–Emmett–Teller analysis provided information regarding adsorption mechanism. Thermogravimetric analysis/differential thermal used stability confirmation Adsorption study illustrated maximum capacity ~400 mg g −1 , found be roughly twice that non‐imprinted followed Langmuir isotherm model pseudo‐second‐order kinetics, confirming monolayer, chemisorption‐based adsorption. Thermodynamic process spontaneous endothermic nature. Selectivity revealed Nd‐IIP 30–40‐fold more than interfering metal CONCLUSION maintained 95% its after five cycles regeneration, affirming durability. results emphasize highly polymeric sorbent removal aqueous solutions, great potential sustainable extraction elements. © 2025 Society Chemical Industry (SCI).
Язык: Английский