Ewha Womans University · 化学
Professor Hoi Ri Moon's research lab specializes in the design, synthesis, and functionalization of metal-organic frameworks (MOFs) and related porous materials for advanced applications in energy, separation, and catalysis. The lab focuses on developing novel MOF-based nanocomposites, particularly through in-situ metal nanoparticle incorporation and MOF-on-MOF architecture, to enhance material performance. Key research directions include hydrogen and isotope separation using quantum sieving effects, controlled thermal conversion of MOFs into functional metal oxides, and the creation of porous materials with tunable porosity and surface chemistry for gas storage and heterogeneous catalysis.
Figures are computed from collected data and may differ slightly.
In this review, we highlight various preparative strategies and characterization methods for metal nanoparticles fabricated in porous metal-organic frameworks (MOFs) or porous coordination polymers (PCPs), and their applications in hydrogen storage and heterogeneous catalysis.
Hi ho silver! Coordination polymer chains assembled from a NiII hexaazamacrocycle and sodium 4,4′-biphenyldicarboxylate can be packed to form a porous framework (see picture). Nanocomposites of silver particles and matrix can be prepared by immersing the framework in AgNO3 solution, and the matrix-free silver nanoparticles (≈3 nm) isolated by treatment of the solid with boiling dioctyl ether containing oleic acid. Supporting information for this article is available on the WWW under http://www.w
Metal–organic frameworks (MOFs) are porous crystalline materials with a high tunability. To improve the functionality of the original frameworks, several strategies, such as the use of different metal cations and organic ligands and post‐synthetic modification, have been developed, enabling the use of MOFs in numerous practical applications in various fields. Recently, another approach, i.e ., MOF‐on‐MOF architecturing, has been actively studied by combining two or more MOFs into a composite. MO
One of the greatest challenges of modern separation technology is separating isotope mixtures in high purity. The separation of hydrogen isotopes can create immense economic value by producing valuable deuterium (D) and tritium (T), which are irreplaceable for various industrial and scientific applications. However, current separation methods suffer from low separation efficiency owing to the similar chemical properties of isotopes; thus, high-purity isotopes are not easily achieved. Recently, n
A 3D porous metal-organic framework generating 1D channels, [Mn(NDC)(DEF)]n (1), has been prepared from the solvothermal reaction of Mn(II) and 2,6-naphthalenedicarboxylic acid (H2NDC) in diethylformamide (DEF). When DEF molecules coordinating Mn(II), which occupy the channels, are removed from 1 by heating the crystal of 1 at 250 degrees C under vacuum for 18 h, structural change occurs as evidenced by X-ray powder diffraction patterns. Desolvated solid [Mn(NDC)]n (2), which contains coordinati
Controlled thermal conversion of Mn-based metal–organic frameworks yielded a series of nanoporous manganese oxides with continuously tuned oxidation states.
4,4′-Biphenyldicarboxylate sodium coordination compounds with different crystal structures are evaluated as anode materials for Na-ion batteries.
Post-synthetic modification methods for the secondary building units in MOFs facilitate unique structures and properties that are impossible to access<italic>via</italic>direct syntheses, which can be classified as four categories.
Tauchend zu Silbernanopartikeln: Koordinationspolymerketten aus einem NiII-Hexaazamakrocyclus und Natrium-4,4′-biphenyldicarboxylat können zu einem porösen Gerüst gepackt werden (siehe Bild). Nanokomposite aus Silberpartikeln und Matrix entstehen beim Eintauchen des Gerüsts in eine AgNO3-Lösung; die matrixfreien Silbernanopartikel (ca. 3 nm) lassen sich durch Behandlung des Feststoffs mit siedendem ölsäurehaltigem Dioctylether isolieren. Supporting information for this article is available on th
An isotope-selective responsive system based on molecular recognition in porous materials has potential for the storage and purification of isotopic mixtures but is considered unachievable because of the almost identical physicochemical properties of the isotopes. Herein, a unique isotope-responsive breathing transition of the flexible metal-organic framework (MOF), MIL-53(Al), which can selectively recognize and respond to only D<sub>2</sub> molecules through a secondary breathing transition, i
The pseudomorphic conversion of MOFs resulted in the controlled preparation of Co<sub>3</sub>O<sub>4</sub> nanoparticles with different microstructures, which showed different electrochemical properties.
This review provides a comprehensive understanding of the fundamental theories and strategies for MOF-based H<sub>2</sub> separation and purification, including hydrogen isotope separation with representative examples.
Abstract Li‐ion batteries (LIBs) have wide applications owing to their high‐energy density and stable cycle characteristics. Nevertheless, with the rapid expansion of electric vehicle market, issues such as explosion of LIBs and the need to secure a longer driving distance have emerged. In this work, functional metal–organic frameworks (MOFs) are introduced as a separator in LIBs, in which a highly heat‐resistant polymer separator is fabricated through electrospinning. The MOFs can scavenge impu
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