Understanding and controlling the nucleation and growth of metal–organic frameworks

Chemical Society Reviews, Год журнала: 2023, Номер 52(20), С. 6918 - 6937

Опубликована: Янв. 1, 2023

This review highlights the theories, parameters, and methods, which can be used to understand, control, monitor MOF nucleation growth.

Язык: Английский

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Electrocatalytic Synthesis of Pyridine Oximes using in Situ Generated NH₂OH from NO species on Nanofiber Membranes Derived from NH₂‐MIL‐53(Al)

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(45)

Опубликована: Сен. 20, 2023

Pyridine oximes produced from aldehyde or ketone with hydroxylamine (NH2 OH) have been widely applied in pharmaceutics, enzymatic and sterilization. However, the important raw material NH2 OH exhibits corrosive unstable properties, leading to substantial energy consumption during storage transportation. Herein, this work presents a novel method for directly synthesizing highly valuable pyridine using situ generated electrocatalytic NO reduction well-design nanofiber membranes (Al-NFM) derived -MIL-53(Al). Particularly, 2-pyridinealdoxime, precursor of antidote pralidoxime (2-PAM) nerve agents suffering scarcity high cost, was achieved Faraday efficiency up 49.8 % yield 92.1 %, attributing selectivity production on Al-NFM, further easily reacted iodomethane produce 2-PAM. This study proposes creative approach, having wide universality other range functional groups, which not only facilitates conversion exhaust gas (NO) waste water (NO2- ) into chemicals especially utilization through electrochemistry, but also holds significant potential synthesis neuro detoxifying drugs humanity security.

Язык: Английский

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Fabrication of Oriented Polycrystalline MOF Superstructures

Advanced Materials, Год журнала: 2023, Номер 36(1)

Опубликована: Ноя. 28, 2023

Abstract The field of metal‐organic frameworks (MOFs) has progressed beyond the design and exploration powdery single‐crystalline materials. A current challenge is fabrication organized superstructures that can harness directional properties individual constituent MOF crystals. To date, progress in methods polycrystalline led to close‐packed structures with defined crystalline orientation. By controlling orientation, pore channels crystals be aligned along specific directions: these systems possess anisotropic including enhanced diffusion directions, preferential orientation guest species, protection functional guests. In this perspective, we discuss status research oriented focusing on directions Three are examined detail: assembly from colloidal solutions, use external fields for alignment particles, heteroepitaxial ceramic‐to‐MOF growth. This perspective aims at promoting inspiring development new protocols preparation channels, enable advanced MOF‐based devices properties.

Язык: Английский

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Dual‐Step Redox Engineering of 2D CoNi‐Alloy Embedded B, N‐Doped Carbon Layers Toward Tunable Electromagnetic Wave Absorption and Light‐Weight Infrared Stealth Heat Insulation Devices

Advanced Materials, Год журнала: 2024, Номер 36(30)

Опубликована: Май 1, 2024

Abstract 2D layered metallic graphite composites are promising electromagnetic wave absorption materials (EWAMs) for their combined properties of abundant interlayer free spaces, rich polarized sites, and high conductivity, but the controllable synthesis remains rather challenging. Herein, a dual‐step redox engineering strategy is developed by employing cobalt boron imidazolate framework (Co‐BIF) to construct CoNi‐alloy embedded B, N‐doped carbon layers (2D‐CNC) as EWAM. In first step, chemical etching oxidation process on Co‐BIF used obtain an optimized 2D‐CoNi‐layered double hydroxide (2D‐CoNi‐LDH) intermediate in second, high‐temperature calcination reduction implemented modify graphitization degree 2D‐CNC. The obtained sample delivers superior reflection loss (RL min ) −60.1 dB wide effective bandwidth (EAB) 6.24 GHz. synergy mechanisms interfacial/dipole polarization magnetic coupling in‐depth evidenced hologram Lorentz electron microscopy, revealing its significant contribution multireflection impedance matching. Further theoretical evaluation COMSOL simulation different fields based dynamic toward test ring reveals situ EW attenuation process. This work presents develop multifunctional light‐weight infrared stealthy aerogel with pressure‐resistant, anti‐corrosion, heat‐insulating future applications.

Язык: Английский

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Hydrogels as promising platforms for solar-driven water evaporators

Chemical Engineering Journal, Год журнала: 2023, Номер 479, С. 147519 - 147519

Опубликована: Ноя. 19, 2023

Язык: Английский

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Construction of the copper metal-organic framework (MOF)-on-indium MOF Z-scheme heterojunction for efficiently photocatalytic reduction of Cr(VI)

Separation and Purification Technology, Год журнала: 2023, Номер 327, С. 124903 - 124903

Опубликована: Авг. 24, 2023

Язык: Английский

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Biomass-MOF composites in wastewater treatment, air purification, and electromagnetic radiation adsorption – A review

Chemical Engineering Journal, Год журнала: 2024, Номер 494, С. 152932 - 152932

Опубликована: Июнь 7, 2024

Язык: Английский

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Constructing host–guest recognition electrolytes promotes the Li⁺ kinetics in solid-state batteries

Energy & Environmental Science, Год журнала: 2024, Номер 17(2), С. 780 - 790

Опубликована: Янв. 1, 2024

Ti-MOFs with synergetic various sites are designed to serve as a “host” platform for GPE tune the electrolyte properties. This unique system can improve Li + ion conduction, mechanical strength and ability withstand high voltage.

Язык: Английский

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A Gas-Steamed Route to Mesoporous Open Metal–Organic Framework Cages Enhancing Flame Retardancy and Smoke Suppression of Polyurea

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(6), С. 7617 - 7630

Опубликована: Фев. 5, 2024

Up to now, metal–organic frameworks (MOFs) with open nanostructures have shown outstanding capabilities in trapping smoke particles compared the original MOFs. However, only a few MOF-based strategies been reported synthesize hierarchical porous cages thus far, which are mainly restricted environmentally unfriendly wet-chemical liquid methods. Herein, as proof-of-concept, gas-steamed framework approach was designed fabricate series of cheeselike porosity. Briefly, zeolitic imidazolate framework-67 (ZIF-67) and phytic acid were employed precursor etchant, respectively. Abandoning conventional method, coordination bond ZIF-67 cleaved by acidic steam, forming an high specific surface area structure. The universality this method also confirmed selection different etchants. Impressively, they show fume-toxic adsorption capability labyrinth effects based on abundant complex channels. At 5 wt % loading, Co3O4@open cage-2 (Co3O4@OZC-2) imparted polyurea (PUA) composites 21.2% limiting oxygen index, peak heat release rate, total release, production reduced around 37.5, 25.5, 40.4%, respectively, neat PUA. This work will shed light advanced structural design polymer fire safety, especially suppression performance, so obtain more feasible applications.

Язык: Английский

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In-situ growth transformation and oxygen vacancy synergistic modulation of the electronic structure of NiCo-LDH enables high-performance hybrid supercapacitors

Applied Energy, Год журнала: 2024, Номер 371, С. 123670 - 123670

Опубликована: Июнь 14, 2024

Язык: Английский

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