A convenient, economical and excellent-yield method for the preparations of zeolite imidazolate frameworks (ZIFs) and the applications in environmental purification

IF 4.3 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY Journal of Physics and Chemistry of Solids Pub Date : 2024-01-23 DOI:10.1016/j.jpcs.2024.111895

Xiaoyu Li , Fangting Chi , Yumin Huang

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Abstract

Zeolite imidazolate frameworks (ZIFs) are a class of highly concerned metal organic frameworks (MOFs) with zeolite like structures. In this study, a convenient, economical and excellent-yield method for ZIFs preparation was built under the chemical principle exploration of ZIFs formation. By loading stoichiometric metal salts and ligands, four ZIF samples were obtained and characterized by XRD, FTIR, BET, SEM and TG. The porous ZIF-8 and ZIF-67 got high S_BET of >1700 m² g⁻¹ and high yields of 98.3% and 91.7%, respectively. Comparatively, the dense ZIF-zni (Zn) and ZIF-zni (Co) got high yields of 98.6% and 92.0% but very low S_BET. ZIF-8 and ZIF-67 were utilized in environmental purification to exhibit good performances in dealing with heavy metals, radionuclides and organic pollutants through adsorption or photocatalysis. The scale-up reaction for ZIF-8 showed that the yield and key performance parameters were almost unchanged, which should be beneficial for mass production.

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制备沸石咪唑啉框架 (ZIF) 的便捷、经济、高产方法及其在环境净化中的应用

沸石咪唑啉框架（ZIFs）是一类具有类似沸石结构的高关注度金属有机框架（MOFs）。本研究根据沸石咪唑啉框架形成的化学原理，建立了一种简便、经济、收率高的沸石咪唑啉框架制备方法。通过加入比例金属盐和配体，获得了四种 ZIF 样品，并通过 XRD、FTIR、BET、SEM 和 TG 对其进行了表征。多孔 ZIF-8 和 ZIF-67 的 SBET 高达 1700 m2 g-1，产率分别为 98.3% 和 91.7%。相比之下，致密的 ZIF-zni(Zn)和 ZIF-zni(Co)获得了 98.6% 和 92.0% 的高产率，但 SBET 却很低。ZIF-8 和 ZIF-67 被用于环境净化，在通过吸附或光催化处理重金属、放射性核素和有机污染物方面表现出良好的性能。ZIF-8 的放大反应表明，其产率和主要性能参数几乎没有变化，这应有利于大规模生产。

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来源期刊

Journal of Physics and Chemistry of Solids 工程技术-化学综合

CiteScore

7.80

自引率

2.50%

发文量

605

审稿时长

40 days

期刊介绍： The Journal of Physics and Chemistry of Solids is a well-established international medium for publication of archival research in condensed matter and materials sciences. Areas of interest broadly include experimental and theoretical research on electronic, magnetic, spectroscopic and structural properties as well as the statistical mechanics and thermodynamics of materials. The focus is on gaining physical and chemical insight into the properties and potential applications of condensed matter systems. Within the broad scope of the journal, beyond regular contributions, the editors have identified submissions in the following areas of physics and chemistry of solids to be of special current interest to the journal: Low-dimensional systems Exotic states of quantum electron matter including topological phases Energy conversion and storage Interfaces, nanoparticles and catalysts.