2014年10月1日 · Novel highly permeable MMMs based on ZIF-71 and 6FDA-Durene for gas separation. ZIF-71 enhances gas permeation properties of the resultant MMMs. A higher loading of ZIF-71 leads to a higher free volume and diffusivity. ZIF-71 nano-particles exhibit molecular sieving effect for C 3 H 6 /C 3 H 8 separation.

ZIF-71 has super-hydrophobic pore channels and a very flexible pore architecture, which make ZIF-71 a potential candidate for recovering bio-alcohols from fermentation broths. In the present study, mixed matrix membranes (MMMs) based on PDMS and ZIF-71 were prepared for separation of alcohols (methanol, ethanol, isopropanol (IPA) or sec ...

2020年11月15日 · In this study, the porous hydrophobic zeolitic imidazolate framework-71 (ZIF-71)/PVDF coating layer was formed on the outer surface of PVDF hollow fiber support membrane by the dilute coating method. Hydrophobic ZIF-71 was incorporated into the PVDF coating layer to further improve the hydrophobicity and endow the coating layer with special ...

研究了 ZIF-71 负载对 H2、O2、N2、CO2、CH4、C2H4、C2H6、C3H6 和 C3H8 气体分离性能的影响。 ZIF-71 纳米颗粒的加入提高了气体渗透性能和膜对塑化的抵抗力。 添加 20 wt% ZIF-71 后，MMM 的纯 CO2 渗透性增加了 3 倍，而理想的 CO2/CH4 选择性从 16.4 降低到 12.8。 此外，CO2 塑化压力从 16 个大气压增加到 30 个大气压。 嵌入 20 wt% ZIF-71 的 MMM 还显示出 C3H6 渗透率从 57.6 Barrer 显着提高到 371 Barrer，而不会显着影响理想的 C3H6/C3H8 选择 …

2015年7月20日 · In this work, a modified contra-diffusion method was carried out to prepare ZIF-71 hollow fiber membranes. The metals Zn 2+ and the organic links imidazole would meet and react on the interface of ceramic hollow fiber through diffusion. The as-prepared ZIF-71 membrane exhibits good performance in separation of ethanol–water mixtures.

2022年3月24日 · With its 816 atoms per unit cell, ZIF-71 is the largest system yet for which frequency calculations have been accomplished employing the CRYSTAL17 DFT code. We discover low-energy terahertz dynamics such as gate-opening and shearing modes that are central to the functions and stability of the ZIF-71 framework structure.

荧光染料的传感特性源自zif-71对rhb单体施加的纳米约束效应，产生具有可调节的光物理和光化学特性的h型或j型聚集体。 对于机械变色，外部压力导致发射红移呈线性方式，通过剪切变形将RhB客体从H型聚集体转变为J型聚集体。

2025年2月19日 · In this study, we fabricated defect-free ZIF-71/MWCNTs membranes by modifying ZIF-71 with MWCNTs. These membranes exhibited superior mechanical properties, excellent electrical conductivity, and adsorption capabilities for highly selective removal and electrochemical detection of Hg (II).

2020年7月23日 · We design and fabricate a new Guest@MOF material: comprising a zeolitic MOF (ZIF-71) as a nanoporous host for encapsulating rhodamine B (RhB dye) guest molecules, resulting in an RhB@ZIF-71 system with mechanochromic, thermochromic, and solvatochromic sensing response.

2022年3月24日 · zif-71 的每个晶胞有 816 个原子，是迄今为止使用 crystal17 dft 代码完成频率计算的最大系统。我们发现了对 zif-71 框架结构的功能和稳定性至关重要的低能太赫兹动力学，例如门打开和剪切模式。