湿法冶金2026，Vol.45Issue(3)：350-363,14.DOI:10.13355/j.cnki.sfyj.2026.03.010
机械化学法制备ZIF-8及其对铀的吸附性能研究
Preparation of ZIF-8 by Mechanical Chemistry and Its Adsorption Performance for Uranium
王笑泽 1杨吴馨晨 1勾阳飞 1常华 1李琪舟 1陈树森1
作者信息
- 1. 核工业北京化工冶金研究院,北京 101149
- 折叠
摘要
Abstract
Zinc zeolite imidazole framework material(ZIF-8)is suitable for uranium adsorption due to its high specific surface area and abundant active sites.Aiming at the problems of long time and large consumption of organic solvents in the synthesis of ZIF-8 by traditional solvent method,ZIF-8 was rapidly synthesized by green and efficient mechanochemical method using zinc hydroxide and 2-methylimidazole as raw materials and used for uranium adsorption.The results show that the ZIF-8 prepared by mechanochemical method has good crystallinity,rhombic dodecahedron morphology,specific surface area of 1 642 m2/g,and rich surface defects and active sites on the surface.Under suitable conditions,the removal rate of uranium by ZIF-8 is more than 99.99％,the maximum adsorption capacity is 476 mg/g,and the adsorption can reach equilibrium within 20 min.The process is a single-layer chemical adsorption mechanism.The cost analysis results show that the synthesis efficiency of mechanochemical method is 16 times higher than that of traditional solvent method,and former's theoretical material cost per gram of uranium is only 3.5％of that of the latter.The mechanism analysis results show that the high specific surface area of the material and the synergistic effect of hydroxyl groups and imidazole nitrogen atoms are the key to the efficient adsorption of U(Ⅵ).ZIF-8 prepared by rapid mechanochemical method has good performance and has certain application potential in the field of uranium adsorption.关键词
ZIF-8/机械化学法/铀/吸附/吸附动力学/吸附性能/机制Key words
ZIF-8/mechanochemical method/uranium/adsorption/adsorption kinetics/adsorption performance/mechanism分类
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王笑泽,杨吴馨晨,勾阳飞,常华,李琪舟,陈树森..机械化学法制备ZIF-8及其对铀的吸附性能研究[J].湿法冶金,2026,45(3):350-363,14.
