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Herein, synthesizable candidate topologies to form zeolitic imidazolate frameworks (ZIFs) are efficiently identified from over 2 000 000 hypothetical structures in zeolite databases, using structural descriptors extracted from known ZIFs. A combination of intuition‐based structural descriptors, such as ring patterns, node numbers, and TOT bridging angles (T = tetrahedral metal nodes in zeolites...
Hidden Zeolitic Imidazolate Frameworks
In article number 2300036, David ChangMo Yang, Wonyoung Choe, and co‐workers propose a library of 207 future zeolitic imidazolate frameworks (ZIFs) from over 2,000,000 zeolites guided by intuition‐based geometrical descriptors. Carefully chosen structural descriptors facilitate the prediction of new ZIFs. The collection of plausible ZIFs serves as a blueprint...
Contamination of water resources by toxic metals and opportunistic pathogens remains a serious challenge. The development of nano‐adsorbents with desired features to tackle this problem is a continuously evolving field. Here, magnetic mesoporous carbon nanospheres grafted by antimicrobial polyhexamethylene biguanidine (PHMB) are reported. Detailed mechanistic investigations reveal that the electrostatic...
Photoresponsive covalent organic frameworks (PCOFs) have emerged as attractive candidates for adsorption, but it is challenging to construct PCOF adsorbents due to structural order loss of covalent organic frameworks (COFs) after introducing photoresponsive motifs and/or tedious steps of postmodification. Here, a facile strategy is developed, by dispersing photoresponsive metal‐organic polyhedra (PMOP)...
Efficient separation of hexane isomers is a crucial process for upgrading gasoline. Herein, the sequential separation of linear, mono‐, and di‐branched hexane isomers by a robust stacked 1D coordination polymer termed as Mn‐dhbq ([Mn(dhbq)(H2O)2], H2dhbq = 2,5‐dihydroxy‐1,4‐benzoquinone) is reported. The interchain space of the activated polymer is of optimal aperture size (5.58 Å) that could exclude...
Supraparticle Powders
Controlling the structure and porosity in hierarchical materials is a key design feature that can enable their successful application in fields of chromatography, catalysis and adsorption. In article number 2300241, Benjamin Apeleo Zubiri, Alexandra Inayat, Nicolas Vogel, and co‐workers provide a versatile toolbox for designing hierarchical porous materials by tailoring the porosity...
A drying droplet containing colloidal particles can consolidate into a spherical assembly called a supraparticle. Such supraparticles are inherently porous due to the spaces between the constituent primary particles. Here, the emergent, hierarchical porosity in spray‐dried supraparticles is tailored via three distinct strategies acting at different length scales. First, mesopores (<10 nm) are introduced...
Metal–Organic Frameworks
Mg‐Gallate metal–organic framework (MOF) has large hysteresis in its CO2 desorption isotherm, hindering efficient regeneration in adsorption swing processes. Utilizing combined induction heating and vacuum desorption under mild, energy‐efficient conditions boost regeneration performance. A hybrid ferromagnetic Mg‐Gallate extrudate material gets heated up rapidly via magnetic...
A major challenge in Cyclic Swing Separation using flexible adsorbents that have high equilibrium CO2 adsorption capacity is their very low‐pressure hysteresis that hinders efficient desorption. Mg‐Gallate MOF is such a flexible adsorbent that only begins to release CO2 at its pore closing pressure at 0.08 bar and 30 °C, showing very slow and inefficient desorption in pressure or temperature swing...
Facile synthesis of hierarchically porous metal–organic frameworks (MOFs) with adjustable porosity and high crystallinity attracts great attention yet remains challenging. Herein, a micromolar amount of dye‐based modulator (Rhodamine B (RhB)) is employed to easily and controllably tailor the pore size of a Ti‐based metal–organic framework (MIL‐125‐NH2). The RhB used in this method is easily removed...
Structurally optimized transition metal phosphides are identified as a promising avenue for the commercialization of lithium–sulfur (Li–S) batteries. In this study, a CoP nanoparticle‐doped hollow ordered mesoporous carbon sphere (CoP‐OMCS) is developed as a S host with a “Confinement–Adsorption–Catalysis” triple effect for Li–S batteries. The Li‐S batteries with CoP‐OMCS/S cathode demonstrate excellent...
The availability of freshwater is rapidly declining due to over‐exploitation and climate change, with multiple parts of the globe already facing significant freshwater scarcity. Here, a sulfonated hypercrosslinked polymer able to repeatedly harvest significant amounts of water via direct air capture is reported. Water uptake from relative humidities as low as 10% is demonstrated, mimicking some of...
The preservation and accessibility of pores are prerequisites to the application of metal–organic frameworks (MOFs). Activation is a key step to eliciting rich features of pores, but it needs a repeated solvent‐exchange process which is tedious and time/cost‐consuming. Herein, a facile strategy for highly‐efficient activation of MOFs utilizing rotating packed bed is proposed. With the tremendous enhancement...
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