Dual Functionalization of UiO-66-NH 2 for Efficient and Selective Au(III) Adsorption: Synergistic Effect of Electrostatic and Coordination Interactions

Key Points

• The research aims to develop a dual-functionalized MOF for efficient Au(III) adsorption from water.
• Developed UiO-66-AVIM-TSC via in-situ polymerization of an amino-functionalized imidazolium ionic liquid.
• Utilized electrostatic and coordination interactions to enhance Au(III) binding efficiency.
• Conducted experiments in aqueous solutions to evaluate adsorption performance.
• UiO-66-AVIM-TSC exhibited significantly higher Au(III) adsorption capacity compared to unfunctionalized UiO-66-NH2.
• Achieved a selectivity factor for Au(III) over other ions in solution, indicating a strong affinity for gold ions.