Water-based synthesis of zeolitic imidazolate framework-8 with high morphology level at room temperature

被引:361
作者
Jian, Meipeng [1 ]
Liu, Bao [1 ,2 ]
Liu, Ruiping [1 ]
Qu, Jiuhui [1 ]
Wang, Huanting [3 ]
Zhang, Xiwang [3 ]
机构
[1] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Monash Univ, Dept Chem Engn, Clayton, Vic 3800, Australia
基金
中国国家自然科学基金;
关键词
METAL-ORGANIC FRAMEWORKS; AQUEOUS-SOLUTION; FTIR SPECTROSCOPY; ZIF-8; NANOPARTICLES; GROWTH; MECHANISMS; TOPOLOGIES; NUCLEATION; MEMBRANES;
D O I
10.1039/c5ra04033g
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In this study, the synthesis of zeolitic imidazole framework (ZIF-8) in water was systematically studied using 6 zinc sources (Zn(OAc)(2), ZnSO4, Zn(NO3)(2), ZnCl2, ZnBr2, ZnI2), respectively, under different conditions at room temperature without using any additives. It was found that Zn(OAc)(2) is the best precursor and the resultant ZIF-8 particles have the best quality with rhombic dodecahedron morphology. The concentration of 2-methylimidazole (Hmim), molar ratio Hmim/Zn and water content all have significant impacts on the morphology, particle size, and crystallinity of ZIF-8. Further result analysis reveals that 3 key reactions are involved in the ZIF-8 formation which needs five steps in ZIF-8 structural evolution. This study provides a deep understanding of the crystallization process of ZIF-8 particles in a waterbased system.
引用
收藏
页码:48433 / 48441
页数:9
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