沸石咪唑盐骨架
咪唑酯
对偶(语法数字)
锌
材料科学
转化(遗传学)
溶剂
双重角色
Crystal(编程语言)
结晶学
化学工程
化学
无机化学
吸附
组合化学
冶金
有机化学
金属有机骨架
计算机科学
程序设计语言
艺术
工程类
文学类
基因
生物化学
作者
Chun‐Xin Jin,Yu Wang,Gao Qiu-shan,Danyang Yao,Sihong Wang,Donghao Li,Hai‐Bo Shang
出处
期刊:Dalton Transactions
[The Royal Society of Chemistry]
日期:2020-01-01
卷期号:49 (8): 2437-2443
被引量:7
摘要
Exploring new zeolitic imidazolate frameworks (ZIFs) with specific topologies and pore structures is important for extending applications and improving performances. In this work, a new farfalle-shaped ZIF with an ordered hierarchical structure (named ZIF-F) was easily built with zinc acetate and 2-methylimidazole (MeIm) in an aqueous system at room temperature. The synthesis mechanism of ZIF-F is a dual-induction interaction of a solvent and zinc source based on the synthesis protocol of ZIF-8. The prepared ZIF-F is a 3-5 μm dispersible particle constructed from numerous nanoplates with the same building units as ZIF-8. ZIF-F has a rich 4 nm inter-particle spacing with a 0.1074 cm3 g-1 total pore volume and exhibits high thermo- and solvent stability. It is worth noting that crystal transformation could occur from ZIF-F to ZIF-8 in methanol via the dissolution-recrystallization route. Regarding the adsorption of Congo red (CR), ZIF-F exhibits better adsorption capacity (182.82 mg g-1) than ZIF-8 (149.25 mg g-1) with 6 times higher adsorption rate than that of ZIF-8 because of the positive effect of its larger pore size and hierarchical structure.
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