Journal ArticleDOI
Defibrillation of soft porous metal-organic frameworks with electric fields
Alexander Knebel,Benjamin Geppert,Kai Volgmann,Daniil I. Kolokolov,Daniil I. Kolokolov,Alexander G. Stepanov,Alexander G. Stepanov,Jens Twiefel,Paul Heitjans,Dirk Volkmer,Jürgen Caro +10 more
TLDR
Permeation measurements under a direct-current E-field poling of 500 volts per millimeter showed reversibly controlled switching of the ZIF-8 into polar polymorphs, which was confirmed by x-ray diffraction and ab initio calculations, and a defibrillation of the different lattice motions.Abstract:
Gas transport through metal-organic framework membranes (MOFs) was switched in situ by applying an external electric field (E-field). The switching of gas permeation upon E-field polarization could be explained by the structural transformation of the zeolitic imidazolate framework ZIF-8 into polymorphs with more rigid lattices. Permeation measurements under a direct-current E-field poling of 500 volts per millimeter showed reversibly controlled switching of the ZIF-8 into polar polymorphs, which was confirmed by x-ray diffraction and ab initio calculations. The stiffening of the lattice causes a reduction in gas transport through the membrane and sharpens the molecular sieving capability. Dielectric spectroscopy, polarization, and deuterium nuclear magnetic resonance studies revealed low-frequency resonances of ZIF-8 that we attribute to lattice flexibility and linker movement. Upon E-field polarization, we observed a defibrillation of the different lattice motions.read more
Citations
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Journal ArticleDOI
Porous metal-organic frameworks for gas storage and separation: Status and challenges
Hao Li,Hao Li,Libo Li,Libo Li,Rui-Biao Lin,Wei Zhou,Zhangjing Zhang,Shengchang Xiang,Banglin Chen +8 more
TL;DR: In this article, the authors summarize and highlight the recent advances in the arena of gas storage and separation using metal-organic frameworks (MOFs) as adsorbents, including progresses in MOF-based membranes for gas separation.
Journal ArticleDOI
Mixed matrix formulations with MOF molecular sieving for key energy-intensive separations.
Gongping Liu,Gongping Liu,Valeriya Chernikova,Yang Liu,Kuang Zhang,Youssef Belmabkhout,Osama Shekhah,Chen Zhang,Shouliang Yi,Mohamed Eddaoudi,William J. Koros +10 more
TL;DR: Efficient incorporation of engineered submicrometre-sized metal–organic framework (MOF) crystals into polymers to form hybrid materials that successfully translate the excellent molecular sieving properties of face-centred cubic (fcu)-MOFs into the resultant membranes are reported on.
Journal ArticleDOI
Energy-efficient separation alternatives: metal-organic frameworks and membranes for hydrocarbon separation.
TL;DR: This critical review presents the recent progress in metal-organic frameworks (MOFs) and related membranes (e.g., continuous MOF membranes and mixed-matrix membranes) for hydrocarbon separation and summarizes the potential barriers that exist from the academic to the ultimate industrial implementations and the prospects of future development.
Journal ArticleDOI
Unveiling dual-linkage 3D hexaiminobenzene metal–organic frameworks towards long-lasting advanced reversible Zn–air batteries
Sambhaji S. Shinde,Chi Ho Lee,Jin-Young Jung,Nayantara K. Wagh,Sung-Hae Kim,Dong-Hyung Kim,Chao Lin,Sang Uck Lee,Jung-Ho Lee +8 more
TL;DR: In this paper, a dual-linked hexaiminobenzene metal-organic framework (Mn/Fe-HIB-MOF)-based bifunctional oxygen electrocatalysts and superionic functionalized bio-cellulose electrolytes (SFOE) was proposed for rechargeable Zn-air batteries.
Journal ArticleDOI
Destruction of Metal-Organic Frameworks: Positive and Negative Aspects of Stability and Lability.
TL;DR: This Review provides an overview of the situations where MOFs undergo destruction due to external stimuli and offers guidelines to avoid unwanted degradation happened to the framework and highlights cases that utilize MOF instability to fabricate varying materials.
References
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