2022年2月9日 · Work presented here shows how the synthesis of ZIF-8 can be tracked by a range of methods including X-ray diffraction, thermo gravimetric analysis and inelastic neutron scattering – which offer...

本文中作者合成了具有逐层堆叠结构的二维ZIF-L材料。 结合选区电子衍射 (Selected-area electron diffraction，SAED)、透射电子显微镜 (Transmission electron microscope，TEM) 图像和粉末X射线衍射 (Powder X-ray diffraction，PXRD) 技术，首次证实该2D MOF的框架是由层状结构沿 c 轴堆叠而成的叶状形态（图 1）。 ZIF-L的层状结构垂直于二维形貌，从而暴露了边缘活性位点，实现了高效电催化氧气还原反应。

2022年11月27日 · A recent study demonstrates that ZIF-L undergoes ZIF-L-to-ZIF-8 phase transformation into ZIF-8 when exposed to a high-temperature organic solvent [18,19,20,21].

2023年12月10日 · ZIF-L与ZIF-67共享相同的构建单元采用了2D分层结构，平面内的有序性是通过Co-N配位键建立的，而层间则通过氢键（N–H⋯N）连接。 因此，与配位饱和的3D ZIF-67相比，2D ZIF-L更容易进行修饰。 理论上，由于存在热力学壁垒，ZIF-67自发转变为ZIF-L几乎是不可能的。 因此，实现从3D ZIF-67到2D ZIF-L的转变具有巨大的理论意义和实际应用重要性。 南京理工大学团队开发了一种简便的过饱和度调节和颗粒动力学控制策略，利用微液滴中 …

2018年5月1日 · ZIF-8, ZIF-L, ZIF-67 and ZIF-7 were successfully synthesized from fresh and recycled synthesis solutions with high purity and yield. The adjustment of pH and the metal ion to organic linker molar ratio of the mother liquor were crucial for the synthesis of next generation of the ZIF crystals through the recycling procedure.

A new two-dimensional zeolitic imidazolate framework (named as ZIF-L) was synthesized in zinc salt and 2-methylimidazole (Hmim) aqueous solution at room temperature. ZIF-L (Zn(mim)2·(Hmim)1/2·(H2O)3/2 or C10H16N5O3/2Zn) has unique cushion-shaped cavities and leaf-like crystal morphology, and exhibits excelle

Contrary to ZIF-8, ZIF-L (Fig. 1b, d) is formed from two-dimensional layers consisting of two, crystallographically different Zn ions, fully bridged mim, monodente Hmim and free Hmim molecules...

2023年2月15日 · We show that this synthesis technique is rapid and provides superior control over the transition from ZIF-L to ZIF-(8, 67) via the flow rates of the initial ZIF precursors and their molar ratio. Moreover, using the MIVM, we can synthesize ZIF-8 nanoparticles with a minimum mean particle size of 76 nm ± 2 nm compared to a mean particle size of ...

2024年9月22日 · ZIF-L通常指的是含有金属离子和咪唑配位的沸石咪唑骨架结构（Zeolitic Imidazolate Frameworks），其中"L"可能表示"Large"（大的）或者是指某种特定的ZIF结构。 ZIFs因其独特的孔隙特性、高比表面积、可调的化学组成和热稳定性而在催化、气体吸附和分离、 …

2024年5月1日 · Herein, ZGO membranes are conceived via a two-dimensional zeolitic imidazolate framework (ZIF-L) in situ grown on graphene oxide (GO), with ZIF-L as an interlayer that increases both vertical interlayer spacing and lateral tortuous path spacing of GO, thus improving the stability, selectivity, and ion permeation of the ZGO lamellar membrane ...