A hetero-supermolecular-building-block strategy for the assembly of porous (3,12,24)-connected uru metal–organic frameworks

Nature Synthesis, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 5, 2024

Language: Английский

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Quasicrystal approximants in isoreticular metal-organic frameworks via Cairo pentagonal tiling

Chem, Journal Year: 2024, Volume and Issue: 10(8), P. 2464 - 2472

Published: April 22, 2024

Language: Английский

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Phase Engineering of Zirconium MOFs Enables Efficient Osmotic Energy Conversion: Structural Evolution Unveiled by Direct Imaging

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(17), P. 11855 - 11865

Published: April 18, 2024

Creating structural defects in a controlled manner within metal–organic frameworks (MOFs) poses significant challenge for synthesis, and concurrently, identifying the types distributions of these is also formidable task characterization. In this study, we demonstrate that by employing 2-sulfonylterephthalic acid as ligand synthesizing Zr (or Hf)-based MOFs, crystal phase transformation from common fcu topology to rare jmt can be easily facilitated using straightforward mixed-solvent strategy. The phase, characterized an extensively open framework, considered derivative generated through introduction missing-cluster defects. We have explicitly identified both MOF phases, their intermediate states, novel core–shell structures they form ultralow-dose high-resolution transmission electron microscopy. addition facilitating engineering, incorporation sulfonic groups MOFs imparts ionic selectivity, making them applicable osmotic energy harvesting mixed matrix membrane fabrication. containing jmt-phase exhibits exceptionally high peak power density 10.08 W m–2 under 50-fold salinity gradient (NaCl: 0.5 M|0.01 M), which surpasses threshold 5 commercial applications attributed combination large pore size, extensive porosity, abundant material.

Language: Английский

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Synthesis of UiO-66-NH₂@PSF Hollow Fiber Membrane with Enhanced Simultaneous Adsorption of Pb²⁺ and Phosphate for Hydrogen Peroxide Purification

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 27, 2025

Electronic grade hydrogen peroxide plays a crucial role in the fabrication of large-scale integrated circuits. However, prepared by anthraquinone method contains impurities such as lead ions (Pb2+) and phosphate, which can seriously affect yield circuit. Traditional adsorbent materials have difficulty solving problem simultaneous adsorption trace anions cations due to single site poor kinetics. In this study, UiO-66-NH2 was introducing -NH2 group on terephthalic acid ligand, series hybrid matrix hollow fiber membranes with different contents were loading it polysulfone (PSF). This initiative not only improved pore size water flux but also enhanced removal efficiency from solution, thereby facilitating practical application. Among them, [email protected] showed best phosphate capacities 3.099 2.160 mg g-1 reached 67.1 60.1%, fully confirms practicability purification electronic chemicals. work innovatively proposes that UiO-66-NH2@PSF great potential adsorbents for efficient solvents.

Language: Английский

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Probing Structural Imperfections: Protein-Aided Defect Characterization in Metal–Organic Frameworks

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(4), P. 1396 - 1403

Published: March 11, 2024

Defect engineering proves to be a highly effective approach for introducing additional open metal sites and porosity into metal–organic frameworks (MOFs), thereby enhancing their gas storage, separation, chemical catalysis capabilities. However, characterizing defective MOFs, which often exhibit nonuniform pores, presents significant challenge. While probe molecules have been widely utilized explore the physical properties of MOF application has predominantly limited gas- or vapor-phase molecules. In this study, we present novel by employing size-selective fluorescent protein characterize macroporous defects induced tartaric acid in zirconium-based MOF, NU-1000. The spatial visualization using hemoglobin-based allows identification distinct structural weak points defect formation mechanisms NU-1000 crystallites prepared various methods. addition confirming findings from conventional characterization methods, such as sorption isotherms powdered X-ray diffraction analysis, unveils nuances overlooked many traditional techniques.

Language: Английский

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Palladium(II) Modulation Enhances the Water Stability and Aqueous ⁹⁹TcO₄^–/ReO₄^– Removal Performance of Metal–Organic Frameworks

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(36), P. 16726 - 16732

Published: July 20, 2024

Improving the water stability of metal-organic frameworks (MOFs) is essential for their use in pollution treatment and environmental remediation, though it remains technically challenging. Herein, we report a novel cationic MOF constructed with [Th

Language: Английский

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Pressure effects on metal/covalent-organic frameworks: structural and optical properties

Science China Chemistry, Journal Year: 2024, Volume and Issue: 67(9), P. 2890 - 2903

Published: May 23, 2024

Language: Английский

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Research on the adsorption capacity and mechanism of carbon dioxide by ion exchange resin loaded with metal–organic cages

The Canadian Journal of Chemical Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Abstract Metal–organic cages (MOCs), a novel type of porous material, have shown great potential in the adsorption and separation CO 2 gas. Zirconium‐based metal–organic (Zr‐MOCs) garnered special attention because their outstanding stability high solubility. Nevertheless, due to its powdery nature tendency for easy aggregation, application industrial field is limited. Here, drawing inspiration from water treatment, inexpensive stable ionic exchange resin D001 was employed as supporting material loading Zr‐MOCs, D001‐Zr‐MOC prepared. The capacity mixed gas (15% /85% N ) under diverse loads various temperatures, different flow rates investigated, cyclic performance determined. mechanism on probed by means energy, isotherm, heat, diffusion coefficient. results showed that maximum 3.96 mmol/g. decreased merely 4.62% after 10 adsorption/desorption cycles. energy heat molecules are relatively high, which indicates has good selectivity molecules. regarded typical Langmuir monolayer adsorption, it verified chemical reaction occurred between adsorbent. possesses higher coefficient, excellent verified.

Language: Английский

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Delicate pore environment regulation in pillar–layered metal–organic frameworks for enhanced C2H2/CO2 separation

Chinese Chemical Letters, Journal Year: 2025, Volume and Issue: unknown, P. 110887 - 110887

Published: Jan. 1, 2025

Language: Английский

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Functional crystalline porous framework materials based on supramolecular macrocycles

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Here we summarize the progress of developing crystalline porous framework materials with supramolecular macrocycles for their applications in solid state, guiding readers through future chemistry, and commercialization.

Language: Английский

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