Progress and perspective on covalent organic frameworks for photo-catalytic hydrogen peroxide production

Chem Catalysis, Journal Year: 2024, Volume and Issue: 4(7), P. 100963 - 100963

Published: July 1, 2024

Language: Английский

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Functionality Modulation Toward Thianthrene‐based Metal‐Free Electrocatalysts for Water Splitting

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(18)

Published: Jan. 21, 2024

The development of metal-free bifunctional electrocatalysts for hydrogen and oxygen evolution reactions (HER OER) is significant but rarely demonstrated. Porous organic polymers (POPs) with well-defined electroactive functionalities show superior performance in reaction (HER) (OER). Precise control the active sites' local environment requires careful modulation linkers through judicious selection building units. Here, a systematic strategy introduced modulating functionality to design synthesize series thianthrene-based sp

Language: Английский

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Vinylene‐linked Donor‐π‐Acceptor Metal‐Covalent Organic Framework for Enhanced Photocatalytic CO2 Reduction

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(48)

Published: Sept. 3, 2024

Abstract Intramolecular charge separation driving force and linkage chemistry between building blocks are critical factors for enhancing the photocatalytic performance of metal‐covalent organic framework (MCOF) based photocatalyst. However, robust achieving both simultaneously has yet to be challenging despite ongoing efforts. Here we develop a fully π‐conjugated vinylene‐linked multivariate donor‐π‐acceptor MCOF (D‐π‐A, termed UJN‐1) by integrating benzyl cyanides linker with multiple functional electron‐rich triphenylamine electron‐deficient copper‐cyclic trinuclear units (Cu‐CTUs) moieties, featuring strong intramolecular force, extended conjugation degree skeleton, abundant active sites. The incorporation Cu‐CTUs acceptor electron‐withdrawing ability concomitantly giant can efficiently accelerate photogenerated electrons transfer from Cu‐CTUs, revealing experiments theoretical calculations. Benefiting synergistically effect D‐π‐A configuration vinylene linkage, highly‐efficient spatial is achieved. Consequently, UJN‐1 exhibits an excellent CO formation rate 114.8 μmol g −1 in 4 h without any co‐catalysts or sacrificial reagents under visible light, outperforming those analogous MCOFs imine‐linked (UJN‐2, 28.9 ) COF Cu‐CTU sites (UJN‐3, 50.0 ), emphasizing role designing novel COFs‐based

Language: Английский

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Benzotrifuran-based donor–acceptor covalent organic frameworks for enhanced photocatalytic hydrogen generation

Green Chemistry, Journal Year: 2024, Volume and Issue: 26(5), P. 2605 - 2612

Published: Jan. 1, 2024

A novel benzotrifuranyl COF with excellent photovoltaic properties and low exciton binding energy was successfully constructed used for efficient photolysis of water.

Language: Английский

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Recent progress on covalent organic frameworks for photocatalytic hydrogen generation via water splitting

Materials Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 8(6), P. 1513 - 1535

Published: Jan. 1, 2024

Covalent organic frameworks (COFs) with permanent porosity, long-range order and rigid backbones offer a promising material platform for photocatalytic water splitting hydrogen production.

Language: Английский

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