Application of MOFs and COFs for photocatalysis in CO2 reduction, H2 generation, and environmental treatment

EnergyChem, Год журнала: 2022, Номер 4(4), С. 100078 - 100078

Опубликована: Июнь 25, 2022

Язык: Английский

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Trace removal of benzene vapour using double-walled metal–dipyrazolate frameworks

Nature Materials, Год журнала: 2022, Номер 21(6), С. 689 - 695

Опубликована: Апрель 28, 2022

Abstract In principle, porous physisorbents are attractive candidates for the removal of volatile organic compounds such as benzene by virtue their low energy capture and release this pollutant. Unfortunately, many exhibit weak sorbate–sorbent interactions, resulting in poor selectivity uptake when present at trace concentrations. Herein, we report that a family double-walled metal–dipyrazolate frameworks, BUT-53 to BUT-58, uptakes 298 K 2.47–3.28 mmol g −1 <10 Pa. Breakthrough experiments revealed BUT-55, supramolecular isomer metal–organic framework Co(BDP) (H 2 BDP = 1,4-di(1 H -pyrazol-4-yl)benzene), captures levels benzene, producing an air stream with content below acceptable limits. Furthermore, BUT-55 can be regenerated mild heating. Insight into performance comes from crystal structure benzene-loaded phase (C 6 @BUT-55) density functional theory calculations, which reveal C–H···X interactions drive tight binding benzene. Our results demonstrate is recyclable physisorbent exhibits high affinity adsorption capacity towards making it candidate environmental remediation benzene-contaminated gas mixtures.

Язык: Английский

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Preparation of Ni@UiO-66 incorporated polyethersulfone (PES) membrane by magnetic field assisted strategy to improve permeability and photocatalytic self-cleaning ability

Journal of Colloid and Interface Science, Год журнала: 2022, Номер 618, С. 483 - 495

Опубликована: Март 26, 2022

Язык: Английский

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Temperature- and solvent-induced reversible single-crystal-to-single-crystal transformations of Tb^III-based MOFs with excellent stabilities and fluorescence sensing properties toward drug molecules

Inorganic Chemistry Frontiers, Год журнала: 2022, Номер 9(7), С. 1504 - 1513

Опубликована: Янв. 1, 2022

The water and pH stabilities of JXUST-12 have been greatly improved by SCSC transformation JXUST-12a exhibits high selectivity sensitivity toward drug.

Язык: Английский

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Reticular framework materials for photocatalytic organic reactions

Chemical Society Reviews, Год журнала: 2023, Номер 52(22), С. 7949 - 8004

Опубликована: Янв. 1, 2023

Photocatalytic organic reactions, harvesting solar energy to produce high value-added chemicals, have attracted increasing attention as a sustainable approach address the global crisis and environmental issues. Reticular framework materials, including metal-organic frameworks (MOFs) covalent (COFs), are widely considered promising candidates for photocatalysis owing their crystallinity, tailorable pore environment extensive structural diversity. Although design synthesis of MOFs COFs been intensively developed in last 20 years, applications photocatalytic transformations still preliminary stage, making systematic summary necessary. Thus, this review aims provide comprehensive understanding useful guidelines exploration suitable MOF COF photocatalysts towards appropriate reactions. The commonly used reactions categorized facilitate identification reaction types. From practical viewpoint, fundamentals experimental design, active species, performance evaluation external conditions, discussed detail easy experimentation. Furthermore, latest advances COFs, composites, comprehensively summarized according actual sites, together with discussion structure-property relationship. We believe that study will be helpful researchers novel reticular various synthetic applications.

Язык: Английский

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Linker Engineering of Sandwich‐Structured Metal–Organic Framework Composites for Optimized Photocatalytic H₂ Production

Advanced Materials, Год журнала: 2023, Номер 35(39)

Опубликована: Июль 8, 2023

While the microenvironment around catalytic sites is recognized to be crucial in thermocatalysis, its roles photocatalysis remain subtle. In this work, a series of sandwich-structured metal-organic framework (MOF) composites, UiO-66-NH2 @Pt@UiO-66-X (X means functional groups), rationally constructed for visible-light photocatalytic H2 production. By varying ─X groups UiO-66-X shell, Pt and photosensitive core can simultaneously modulated. Significantly, MOF composites with identical light absorption loading present distinctly different production rates, following group sequence ─H > ─Br ─NA (naphthalene) ─OCH3 ─Cl ─NO2 . @Pt@UiO-66-H demonstrates rate up 2708.2 µmol g-1 h-1 , ≈222 times that @Pt@UiO-66-NO2 Mechanism investigations suggest variation balance charge separation proton reduction ability Pt, leading an optimal activity at equilibrium point.

Язык: Английский

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Linker Engineering for Reactive Oxygen Species Generation Efficiency in Ultra-Stable Nickel-Based Metal–Organic Frameworks

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(34), С. 18931 - 18938

Опубликована: Авг. 17, 2023

Interfacial charge transfer on the surface of heterogeneous photocatalysts dictates efficiency reactive oxygen species (ROS) generation and therefore aerobic oxidation reactions. Reticular chemistry in metal-organic frameworks (MOFs) allows for rational design donor-acceptor pairs to optimize interfacial charge-transfer kinetics. Herein, we report a series isostructural fcu-topology Ni8-MOFs (termed JNU-212, JNU-213, JNU-214, JNU-215) with linearly bridged bipyrazoles as organic linkers. These crystalline can maintain their structural integrity 7 M NaOH at 100 °C 24 h. Experimental studies reveal that linker engineering by tuning electron-accepting capacity pyrazole-bridging units renders these significantly improved separation under visible-light irradiation. Among them, one containing benzoselenadiazole unit (JNU-214) exhibits best photocatalytic performance benzylamines conversion rate 99% Recycling experiments were carried out confirm stability reusability JNU-214 robust catalyst. Significantly, systematic modulation bridging donor-acceptor-donor MOFs provides new pathway develop viable noble-metal-free

Язык: Английский

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Enhancing the spatial separation of photogenerated charges on Fe-based MOFs via structural regulation for highly-efficient photocatalytic Cr(VI) reduction

Journal of Hazardous Materials, Год журнала: 2022, Номер 441, С. 129875 - 129875

Опубликована: Авг. 31, 2022

Язык: Английский

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Metal–organic frameworks for organic transformations by photocatalysis and photothermal catalysis

Chemical Society Reviews, Год журнала: 2024, Номер 53(18), С. 9378 - 9418

Опубликована: Янв. 1, 2024

Organic transformation by light-driven catalysis, especially, photocatalysis and photothermal denoted as photo(thermal) is an efficient, green, economical route to produce value-added compounds. In recent years, owing their diverse structure types, tunable pore sizes, abundant active sites, metal-organic framework (MOF)-based catalysis has attracted broad interest in organic transformations. this review, we provide a comprehensive systematic overview of MOF-based for First, the general mechanisms, unique advantages, strategies improve performance MOFs are discussed. Then, outstanding examples transformations over introduced according reaction type. addition, several representative advanced characterization techniques used revealing charge kinetics intermediates presented. Finally, prospects challenges field proposed. This review aims inspire rational design development materials with improved catalysis.

Язык: Английский

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A Tb³⁺-anchored Zr(iv)-bipyridine MOF to promote photo-induced electron transfer and simultaneously enhance photoluminescence ability and photocatalytic reduction efficiency towards Cr₂O₇²⁻

Journal of Materials Chemistry A, Год журнала: 2023, Номер 11(6), С. 2957 - 2968

Опубликована: Янв. 1, 2023

The fluorescence sensing sensitivity, accuracy, and photocatalytic reduction efficiency of a bcu topological Zr-MOF have been effectively improved, by firmly anchoring lanthanide Tb 3+ ions in the Zr-MOF.

Язык: Английский

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