A molecular sieve with ultrafast adsorption kinetics for propylene separation

Science, Journal Year: 2023, Volume and Issue: 383(6679), P. 179 - 183

Published: Dec. 14, 2023

The design of molecular sieves is vital for gas separation, but it suffers from a long-standing issue slow adsorption kinetics due to the intrinsic contradiction between sieving and diffusion within restricted nanopores. We report sieve ZU-609 with local channels that feature gates rapid channels. precise cross-sectional cutoff enables exclusion propane propylene. coexisting large constituted by sulfonic anions helically arranged metal-organic architectures allow fast propylene, measured propylene coefficient in one two orders magnitude higher than previous sieves. Propylene 99.9% purity obtained through breakthrough experiments productivity 32.2 L kg

Language: Английский

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pH-stable MOFs: Design principles and applications

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 493, P. 215301 - 215301

Published: June 18, 2023

Language: Английский

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A Dual-Purpose Ce(III)–Organic Framework with Amine Groups and Open Metal Sites: Third-Order Nonlinear Optical Activity and Catalytic CO₂ Fixation

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(31), P. 37300 - 37311

Published: July 27, 2023

The present work focuses on the synthesis and properties of a novel multifunctional cerium(III) MOF, [Ce2(data)3(DMF)4]·DMF (data2-: 2,5-diaminoterephthalate), abbreviated as NH2-Ce-MUM-2. Its crystal structure reveals an intricate 3D 4,5-connected framework with xah topology. This MOF features unique properties, such open metal sites, presence free amino groups, high stability. Two main applications NH2-Ce-MUM-2 were investigated: (i) heterogeneous catalyst in CO2 fixation into cyclic carbonates (ii) material third-order nonlinear optical activity. As model reaction, cycloaddition to propylene oxide give corresponding carbonate was explored under mild conditions, at atmospheric pressure carbon dioxide absence cocatalyst added solvent. Various reaction parameters investigated toward optimization exploration substrate scope, revealing up 99% product yields products. Besides, is highly stable, permitting its recyclability reusability further catalytic experiments. significant contributions groups sites within this particularly considered when proposing potential mechanism for reaction. Z-Scan measurements used evaluate (NLO) various laser intensities. A two-photon absorption (TPA) greater incident intensities shows that might be applicable switching devices. self-focusing effects highlighted by index refraction (n2). By reporting characterization along promising NLO behavior, current study introduces additional example growing family metal-organic frameworks.

Language: Английский

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Thermocatalytic Conversion of CO₂ to Valuable Products Activated by Noble‐Metal‐Free Metal‐Organic Frameworks

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(34)

Published: May 12, 2023

Thermocatalysis of CO2 into high valuable products is an efficient and green method for mitigating global warming other environmental problems, which Noble-metal-free metal-organic frameworks (MOFs) are one the most promising heterogeneous catalysts thermocatalysis, many excellent researches have been published. Hence, this review focuses on obtained from various conversion reactions catalyzed by noble-metal-free MOFs, such as cyclic carbonates, oxazolidinones, carboxylic acids, N-phenylformamide, methanol, ethanol, methane. We classified these published references according to types products, analyzed methods improving catalytic efficiency MOFs in reaction. The advantages using MOF were also discussed along text. This concludes with future perspectives challenges be addressed potential research directions. believe that will helpful readers attract more scientists join topic conversion.

Language: Английский

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Porous materials as effective chemiresistive gas sensors

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(5), P. 2530 - 2577

Published: Jan. 1, 2024

This review emphasizes the crucial role of chemiresistive gas sensors (CGS) in detection. It underscores porous materials as alternatives, showcasing their exceptional attributes. The explores CGS-based real-life applications.

Language: Английский

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Smart Contact Lenses as Wearable Ophthalmic Devices for Disease Monitoring and Health Management

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(19), P. 11488 - 11558

Published: Sept. 25, 2023

The eye contains a complex network of physiological information and biomarkers for monitoring disease managing health, ocular devices can be used to effectively perform point-of-care diagnosis management. This comprehensive review describes the target various diseases, including ophthalmic metabolic neurological based on anatomical background eye. also includes recent technologies utilized in eye-wearable medical latest trends wearable devices, specifically smart contact lenses purpose After introducing other such as retinal prosthesis, we further discuss current challenges potential possibilities lenses.

Language: Английский

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MOFs coupled transition metals, graphene, and MXenes: Emerging electrocatalysts for hydrogen evolution reaction

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 482, P. 148776 - 148776

Published: Jan. 18, 2024

Language: Английский

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Engineering Graphdiyne for Solar Photocatalysis

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(22)

Published: March 4, 2023

Graphdiyne (GDY) with a direct band gap, excellent carrier mobility and uniform pores, is regarded as promising photocatalytic material for solar energy conversion, while the research on GDY in photocatalysis less developed field. Herein, distinctive structure, adjustable electronic properties of firstly summarized. The construction progress GDY-based photocatalysts including H2 evolution reaction (HER), CO2 reduction (CO2 RR) N2 (NRR) are then elaborated. At last, challenges perspectives developing fuel production discussed. It anticipated that timely Minireview will be helpful rapid conversion.

Language: Английский

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2D-MXenes to tackle wastewater: From purification to SERS-based sensing

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 496, P. 215394 - 215394

Published: Aug. 28, 2023

Language: Английский

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Metal-organic framework hybrid adsorbents for carbon capture – A review

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(2), P. 109291 - 109291

Published: Jan. 10, 2023

Metal-organic frameworks (MOFs) are three-dimensional network structures synthesized by the assembly of organic ligands with metal ions or clusters. They currently constitute one most promising adsorbent categories for CO2 capture given their high specific surface area and porosity, chemical versatility, facile chemistry supporting strategic structural modifications. Indeed, many thousands MOFs referenced in various databases. Within this wide family materials, experience certain challenges, which often limit use practical applications, including relatively poor thermal stability, cyclability, sensitivity to trace contaminants. One approach address these drawbacks lies hybridization other material counterparts design combinatorial hybrid adsorbents exhibiting superior performance enhanced properties, benefiting from synergetic effects each component interfacial properties engineering. The purpose work is critically review hybridized MOF capture, a prime focus on different opportunities offered hybridizing materials additives MOFs. engineering, systematically reviewed, challenges discussed. This provides key parameters application presents recommendations further research, thereby providing roadmap synthesis usage types applications.

Language: Английский

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