Tuned porous MOFs & COFs for arsenic removal- advanced water remediation approach

Desalination, Год журнала: 2024, Номер 592, С. 118075 - 118075

Опубликована: Сен. 6, 2024

Язык: Английский

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Covalent Organic Frameworks for Photocatalysis

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 9, 2024

Abstract The global energy crisis and environmental concerns are driving research into renewable sustainable conversion storage technologies. Solar energy, as an ideal resource, has significant potential to contribute the goal of net‐zero carbon emissions if effectively harnessed converted a reliable storable form energy. Photocatalysts have convert sunlight chemical carriers. In this respect, covalent organic frameworks (COFs) shown great promise due their tunable structure on different length scales, high surface areas, beneficial optical properties such broad visible light absorption. This review offers comprehensive overview key developments in COF‐based photocatalysts for various applications, including water splitting, hydrogen peroxide generation, transformations, dioxide nitrogen reduction. underlying mechanisms, essential principles material design, structure‐function relationships COFs photocatalytic applications discussed. challenges faced by also summarized strategies enhance performance explained, improving crystallinity, regulating molecular structures, tailoring linkages, incorporating cocatalysts. Finally, critical proposed utilization photocatalytically generated chemicals value‐added products.

Язык: Английский

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Linkage Microenvironment Modulation in Triazine‐Based Covalent Organic Frameworks for Enhanced Photocatalytic Hydrogen Peroxide Production

Small, Год журнала: 2025, Номер unknown

Опубликована: Янв. 26, 2025

Abstract Covalent organic frameworks (COFs), known for the precise tunability of molecular structures, hold significant promise photocatalytic hydrogen peroxide (H 2 O ) production. Herein, by systematically altering quinoline (QN) linkages in triazine (TA)‐based COFs via multi‐component reactions, six R‐QN‐TA‐COFs are synthesized with identical skeletons but different substituents. The fine‐tuning optoelectronic properties and local microenvironment is allowed, thereby optimizing charge separation improving interactions dissolved oxygen. Consequently, MeO‐QN‐TA‐COF customized to achieve an impressive rate H production up 7384 µmol g⁻ 1 h⁻ under air atmosphere water without any sacrificial agents, surpassing most reported COF photocatalysts. Its high stability demonstrated through five consecutive recycling experiments characterization recovered COF. reaction mechanism further investigated using a suite quenching experiments, situ spectroscopic analysis, theoretical calculations. enhanced over 2e⁻ oxygen reduction oxidation pathways. Overall, crucial role linkage modulation design solar‐driven effective

Язык: Английский

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Organic-inorganic hybrid-based S-scheme heterostructure in solar-to-fuel conversion

Journal of Material Science and Technology, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

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Photons, Excitons, and Electrons in Covalent Organic Frameworks

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(47), С. 32161 - 32205

Опубликована: Ноя. 18, 2024

Covalent organic frameworks (COFs) are created by the condensation of molecular building blocks and nodes to form two-dimensional (2D) or three-dimensional (3D) crystalline frameworks. The diversity with different properties functionalities large number possible framework topologies open a vast space well-defined porous architectures. Besides more classical applications materials such as absorption, separation, catalytic conversions, interest in optoelectronic COFs has recently increased considerably. electronic both their linkage chemistry can be controlled tune photon absorption emission, create excitons charge carriers, use these carriers photocatalysis, luminescence, chemical sensing, photovoltaics. In this Perspective, we will discuss relationship between structural features properties, starting connectivity, layer stacking 2D COFs, control over defects morphology including thin film synthesis, exploring theoretical modeling structural, electronic, dynamic discussing recent intriguing focus on photocatalysis photoelectrochemistry. We conclude some remarks about present challenges future prospects powerful architectural paradigm.

Язык: Английский

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Porphyrin-based metal-organic frameworks for photocatalytic carbon dioxide reduction: Current understanding and challenges

Nano Materials Science, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

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Boosting hydrogen peroxide photosynthesis via a 1D/2D S-scheme heterojunction constructed by a covalent triazine framework with dual O2 reduction centers

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Год журнала: 2025, Номер 69, С. 315 - 326

Опубликована: Фев. 1, 2025

Язык: Английский

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Construction of CYANO-COF/ZnIn2S4 S-scheme heterojunction for boosted photocatalytic hydrogen generation

Journal of Material Science and Technology, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

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Regulating the N-coordination environment of single-atom active sites in covalent organic frameworks for boosting photocatalytic CO2 reduction

Journal of Catalysis, Год журнала: 2025, Номер unknown, С. 116078 - 116078

Опубликована: Март 1, 2025

Язык: Английский

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Enhanced photo-Fenton catalysis via bandgap engineering of metalloporphyrin-based covalent organic framework shells on bimetallic metal–organic frameworks: accelerating Fe(iii)/Fe(ii) loop activation

Journal of Materials Chemistry A, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

A metallized porphyrin-based COF shell was constructed on bimetal based NH 2 -Cu/Fe-MIL-101 nanoparticles, which demonstrates exceptional photo-Fenton catalytic efficiency and excellent stability.

Язык: Английский

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