【152 Journal of Environmental Chemical Engineering】Facile synthesis of dual-functional ZIF-8-based evaporators towards high-performance in seawater desalination and uranium extraction
作者：Zhikun Dai, Rui Gao, Qianqian Li, Mengting Qin, Jing Yang, Ran Niu*, Jiang Gong*
關(guān)鍵字：ZIF-8; seawater desalination; uranium extraction
論文來(lái)源：期刊
具體來(lái)源：Journal of Environmental Chemical Engineering
發(fā)表時(shí)間：2024年
Zhikun Dai, Rui Gao, Qianqian Li, Mengting Qin, Jing Yang, Ran Niu*, Jiang Gong*
Facile synthesis of dual-functional ZIF-8-based evaporators towards high-performance in seawater desalination and uranium extraction
Journal of Environmental Chemical Engineering (2024) Accept. (IF2024 = 7.4)
Interfacial solar evaporation, which utilizes the inexhaustible solar energy to desalinate freshwater, is highly promising to solve freshwater shortage. However, when dealing with polluted water such as radioactive uranium solution, the effective adsorption of uranium is critical to avoid environmental pollution. Herein, we report the facile construction of zeolitic imidazolate framework-8 (ZIF-8)/carbon nanotube (CNT)/gelatin evaporator via a simple dip coating method for simultaneous seawater desalination and uranium extraction. Benefiting from the incorporated CNT, the evaporator shows good light absorption and photothermal conversion. The evaporator reaches a high evaporation rate of 4.1 kg m-2 h-1 under 1 Sun irradiation, which surpasses many advanced evaporators. Furthermore, the nitrogen-containing ZIF-8 and gelatin enable the uranium adsorption through water transport and self-heating effect, since the water evaporation enables UO22+ diffusion and the photothermal effect facilitates UO22+ adsorption. Consequently, the equilibrium adsorption of UO22+ is reached within 60 min, with the high UO22+ adsorption capacity of 179.6 mg g-1. This work provides a new opportunity for simultaneous freshwater generation and uranium adsorption, which contributes to achieving carbon neutrality and uranium adsorption.