A novel chitosan/ZIF-8/algal powder (ZIF-8/CP/CT) composite adsorbent was synthesized for efficient adsorption of uranyl ions in seawater. The results demonstrate that ZIF-8/CP/CT exhibits excellent uranium adsorption performance within the pH range of 4.0-8.0, with an adsorption rate exceeding 89 %. Kinetic and thermodynamic experiments reveal that the theoretical maximum adsorption capacity of ZIF-8/CP/CT for U(VI) is 873 mg/g (308 K, pH = 6.0), indicating a spontaneous exothermic reaction. Mechanistic analysis reveals that the hydroxyl, amino, and P=O bonds on the surface of ZIF-8/CP/CT and...
