2019年12月1日 · Zeolitic imidazolate framework ZIF-7 (Zn (bim) 2) is a prototypical one among different ZIFs, and it is formed by connecting Zn actions with benzimidazole (bim) anions. Single crystal X-Ray diffraction studies shows it has a sodalite (SOD) topology with a …

The framework flexibility of metal–organic frameworks (MOFs) is beneficial for gas storage and adsorption but is disadvantageous to the separation process based on the size-extrusion mechanism. Herein, the framework flexibility of ZIF-7, a typical MOF famous for its phase transition between wide-pore (ZIF-7-

2018年5月1日 · ZIF-8, ZIF-L, ZIF-7 and ZIF-67 were synthesized from fresh and recycled synthesis solutions. ZIF-8, ZIF-L and ZIF-7 includes Zn 2+, while ZIF-67 includes Co 2+. ZIF-7 was synthesized in dimethyl formamide, while the others in water. The organic linker was 2-methyl imidazole for ZIF-8, ZIF-L and ZIF-67, and benzimidazole for ZIF-7.

Unlike the reported complex methods for controlling the framework flexibility of MOFs through fine-adjusting the composition, morphology and guest-occupation of MOFs, a new concept was demonstrated in this work, namely, locking of the phase transition by embedding the MOF nanocrystals in the rigid polymer matrix to control its framework ...

2010年5月15日 · This study demonstrates that MOF materials, especially ZIFs, are promising candidates for constructing gas separation membranes. Due to its broad temperature window and feed concentration window, the ZIF-7 membrane seems to be promising for both hydrogen production and recycling.

2023年9月16日 · We aim to comprehend the effect of textural properties such as crystal size, its distribution, and morphology on the gate-opening behavior stimulated by the adsorption of guest molecules in ZIF-7. The synthesis conditions are varied to obtain ZIF-7 batches with crystal sizes ranging between 0.05 and 15 μm with various size distributions.

通过使用碱蒸汽扩散法精确控制生长动力学，成功合成了24种不同的非晶态CPs胶体，并在超过30种不同的纳米颗粒（NPs）上生长了非晶态MOFs涂层，形成了核-壳胶体。 此外，通过一步转化，可以获得各种多功能纳米结构，例如非晶态MOFs壳层、核@金属氧化物和核@碳。 这项工作显著丰富了Stöber方法，并为设计具有不同功能和复杂性的胶体提供了一个平台。 1. 在材料科学领域，合成具有特定功能的非晶态材料是一个挑战，尤其是在MOFs和CPs这类多孔材料中。 2. 传 …

这篇综述涵盖了合成方法的最新研究发现及其在沸石咪唑盐骨架ZIF-7（Zn（bim） 2）中的相应应用。 这种纳米材料因其优异的性能（如良好的热化学稳定性，比表面积大，“开门”机制等）而受到了广泛的关注，这使ZIF-7成为储氢，吸附和分离等相关材料的潜在材料。 方面。 这篇综述涵盖了合成方法的最新研究发现及其在沸石咪唑盐骨架ZIF-7（Zn（bim）2）中的相应应用。 这种纳米材料因其优异的性能（如良好的热化学稳定性，比表面积大，“开门”机制等）而受到了广泛的关 …

本文通过SAST策略成功制备了高质量的混合金属ZIF-7膜，该膜在气体分离方面表现出色，具有高选择性和高渗透性。

2024年5月27日 · Constructing mixed-metal metal organic framework (MOF) membranes is an effective strategy to improve the gas separation performance due to the outstanding properties of mixed-metal MOFs materials in adsorption and separation fields.