Covalent Organic Frameworks for Photocatalysis

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 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.

Language: Английский

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Engineering Single Cu Atoms Anchored via N‐Heterocyclic Carbene in COF Mesopores for Modulating Electron Kinetics of CO₂ Photoconversion

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 9, 2024

Abstract Charge transfer and carbon dioxide (CO 2 ) adsorption/activation are critical factors for the electron kinetics during CO photoconversion. Herein, high‐loading robust single Cu atoms (7.8 wt.%) anchored via N‐heterocyclic carbene ligands derived from imidazolium ionic liquid motifs, precisely bonding to acceptors of mesoporous donor‐acceptor pyridine‐covalent organic framework (pCOF) nanosheets. By engineering valance coordination structure, atomic Cu(I)‐CO sites, superior Cu(II)‐CN OCl ones, enable a 22‐fold increase conversion rate compared pCOF in pure water, ≈100% selectivity toward CO, an apparent quantum yield 1.7% (420 nm). The photoactivity outperforms analogous COF‐based photocatalysts under similar conditions. Experimental results prove Cu(I) possess more improved capture capacities than Cu(II) ones. Combining fs‐ µs‐transient absorption spectroscopy, mechanism is investigated on single‐atom photocatalyst model. fs‐transient spectra confirm can rapidly extract electrons electron‐rich region along carbene, exhibiting 3 × 10 9 s −1 . Using situ efficiency quantified reach 60.4% photocatalytic reaction This work provides rational design strategy advanced photocatalysts.

Language: Английский

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Metal-organic framework/layered double hydroxide (MOF/LDH) hetero-nanosheet array for capacitive deionization

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 158120 - 158120

Published: Nov. 1, 2024

Language: Английский

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Fluoro-functionalized porous poly(ionic liquid)s for efficient CO2 conversion under mild conditions

Fuel, Journal Year: 2025, Volume and Issue: 389, P. 134617 - 134617

Published: Feb. 11, 2025

Language: Английский

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Recent Update on Catalytic Activity of N-Heterocyclic Carbene Supported on Graphene Nanosheets: A Mini Review

Journal of Organometallic Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 123660 - 123660

Published: April 1, 2025

Language: Английский

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Palladium/N-Heterocyclic Carbene-Decorated Covalent Organic Framework for Suzuki–Miyaura and Mizoroki–Heck Cross-Coupling

The Journal of Organic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Recently, significant breakthroughs have been achieved in covalent organic frameworks (COF) as well-defined porous materials for palladium catalysis. However, the development of modular decorated with readily available and strongly σ-donating N-heterocyclic ligands is unexplored. In this study, we report a novel Pd-NHC/COF framework, where active species incorporated into framework through accessible benzimidazolium. The system promotes Suzuki-Miyaura Mizoroki-Heck C-C cross-coupling highly reusable catalyst. Excellent catalytic efficiency high Z/E selectivity construction biaryls stilbenes using system.

Language: Английский

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Triazine- and amino-functionalized poly(ionic liquid) heterogeneous catalyst for efficient CO2 conversion under mild conditions

Journal of CO2 Utilization, Journal Year: 2024, Volume and Issue: 88, P. 102954 - 102954

Published: Oct. 1, 2024

Language: Английский

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Benzotrithiophene-Based Covalent Organic Frameworks with Rhenium Modified for Artificial Photosynthetic CO₂ Reduction

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 9, 2024

Although covalent organic framework (COF)-based photocatalysts for CO

Language: Английский

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Au-Acyclic Diaminocarbene-Linked Homochiral Covalent Organic Frameworks: Synthesis and Asymmetric Catalytic Application

Chemistry of Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 24, 2024

Chiral covalent organic framework (CCOF)-based heterogeneous catalysts are the new hot topic in asymmetric catalysis. The chiral metal-acyclic diaminocarbene complexes (M-ADCs), on other hand, make up a powerful class of homogeneous for various transformations. integration M-ADCs with COFs into single platform will undoubtedly lead to breed catalysts. Here, we report synthesis Au-ADC-linked CCOFs via metal-mediated nucleophilic addition approach. This research not only provides type COF linkage but also affords kind

Language: Английский

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Sustainable development of anticancer and antidiabetic derivatives by solvent-free heterocyclization

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 20, 2024

Herein we have developed a heterogeneous catalyst for synthesizing various anticancer and antidiabetic derivatives via heterocyclic synthesis under solvent-free conditions at mild temperatures. This approach eliminates the need complex cleanup or column chromatography, thus minimizing waste production. Moreover, can be recovered reused up to multiple times without compromising product yields, demonstrating its sustainability environmental friendliness. Additionally, evaluated each synthetic derivative activities. Initial assays revealed that certain exhibit promising inhibition against human breast cancer cells (MCF7), suggesting their potential as lead structures future agents. Furthermore, synthesized were assessed activity, showing superior efficacy. Notably, containing –H, –CH₃, –OCH₃ substituents demonstrated excellent activity compared 5-fluorouracil (5-FU), while –H –Br showed notable activities over acarbose, highlighting therapeutic potential. Thus, our study presents highly effective sustainable polyhydroquinoline derivatives, emphasizing catalyst's dual benefits in organic medicinal chemistry applications.

Language: Английский

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