Reticular framework materials for photocatalytic organic reactions

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(22), P. 7949 - 8004

Published: Jan. 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.

Language: Английский

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Structural Motifs in Covalent Organic Frameworks for Photocatalysis

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

Published: March 10, 2024

Abstract Covalent organic frameworks (COFs) attract significant attention due to their ordered, crystalline, porous, metal‐free, and predictable structures. These unique characteristics offer great opportunities for the diffusion transmission of photogenerated charges during photocatalysis. Currently, a considerable number COFs are used as metal‐free semiconductor photocatalysts. This review aims understand relationships between structure photocatalysis performance provides in‐depth insight into synthetic strategy improve performance. Subsequently, focuses on structural motif in sustainable photocatalytic hydrogen evolution, carbon dioxide reduction, peroxide generation, compound transformations. Last, conjunction with progress achieved challenges yet be overcome, candid discussion is undertaken regarding field COF photocatalysis, accompanied by presentation potential research avenues future directions. seeks provide readers comprehensive understanding pivotal role robust guidance innovative utilization

Language: Английский

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Advances in COFs for energy storage devices: Harnessing the potential of covalent organic framework materials

Energy storage materials, Journal Year: 2023, Volume and Issue: 63, P. 103014 - 103014

Published: Oct. 7, 2023

Language: Английский

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Molecular‐Level Regulation Strategies Toward Efficient Charge Separation in Donor−Acceptor Type Conjugated Polymers for Boosted Energy‐Related Photocatalysis

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 14(5)

Published: Dec. 11, 2023

Abstract The development of efficient photocatalysts for artificial photocatalytic energy conversion is an intriguing strategy. Promisingly, conjugated polymers (CPs) have been actively investigated as alternatives to traditional inorganic semiconductors photocatalysis due their molecularly tunable optoelectronic properties, thus providing a great platform molecular design. Incorporating donor (D) and acceptor (A) units into the backbone CPs ensures adequate D−A interface, which essential facilitating charge separation. This approach also allows bandgaps leading significant progress in conversions recent years. Here, fundamentals D–A type are initially outlined, followed by advanced experimental methods density functional theory (DFT) calculations investigating carrier dynamics. Then, detailed exposition synthetic strategies carried out. Their extensive applications diverse energy‐related conversions, such hydrogen evolution, oxygen overall water splitting, CO 2 reduction, N H O evolution comprehensively presented. review provides new comprehensive insights molecular‐level design catalysts boosted conversion, expected further advance photocatalysis.

Language: Английский

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Structural Regulation of Covalent Organic Frameworks for Catalysis

Accounts of Chemical Research, Journal Year: 2024, Volume and Issue: 57(8), P. 1214 - 1226

Published: March 29, 2024

ConspectusChemical reactions can be promoted at lower temperatures and pressures, thereby reducing the energy input, by introducing suitable catalysts. Despite its significance, quest for efficient stable catalysts remains a significant challenge. In this context, addressing efficiency of stands out as paramount concern. However, challenges posed vague structure limited tailorability traditional would make it highly desirable to fabricate optimized based on understanding structure–activity relationships. Covalent organic frameworks (COFs), subclass fully designed crystalline materials formed polymerization building blocks through covalent bonds have garnered widespread attention in catalysis. The precise customizable structures COFs, coupled with attributes such high surface area facile functional modification, COFs attractive molecular platforms catalytic applications. These inherent advantages position ideal catalysts, facilitating elucidation structure-performance relationships further improving Nevertheless, there is lack systematic emphasis summary structural regulation atomic/molecular level COF Consequently, growing need summarize research field provide deep insights into COF-based catalysis promote development.In Account, we will recent advances achieved placing an design enhanced Considering unique components present fundamental principles rational This Account starts presenting overview explaining why are promising Then, introduce principle Next, following three aspects specific strategies catalysts: (1) By designing different groups integrating metal species unit, activity and/or selectivity finely modulated. (2) Regulating linkage facilitates charge transfer modulates electronic sites, accordingly, intrinsic activity/selectivity improved. (3) means pore wall/space engineering, microenvironment surrounding sites modulated optimize performance. Finally, current future developments discussed detail. provides insight toward their performance, which inspiration other heterogeneous

Language: Английский

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Dual–Acceptor Engineering in Pyrene‐Based Covalent Organic Frameworks for Boosting Photocatalytic Hydrogen Evolution

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(40)

Published: July 18, 2024

Abstract The integration of electron donor (D) and acceptor (A) units into covalent organic frameworks (COFs) has received increasing interest due to its potential for efficient photocatalytic hydrogen (H 2 ) evolution from water. Nevertheless, the advancement D–A COFs is still constrained by limited investigations on engineering, which enables highly effective charge transfer pathways in deliver photoexcited electrons a preferential orientation enhance performance. Herein, two systems with D–A–A configurations based molecular engineering strategy are proposed construct three distinct COFs. Specifically, TAPPy‐DBTDP‐COF merging one pyrene‐based benzothiadiazole acceptors realized an average H rate 12.7 mmol h −1 g under visible light, among highest ever reported typical D–A‐type COF systems. combination experimental theoretical analysis signifies crucial role dual‐acceptor arrangement promoting exciton dissociation carrier migration. These findings underscore significant structural design, conducive separation holes resulting superior activities.

Language: Английский

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Modified side-chain COFs construct built-in electric fields with low exciton binding energy for photo-reduced uranium

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 483, P. 149339 - 149339

Published: Feb. 5, 2024

Language: Английский

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Donor-acceptor covalent organic framework/ZnIn2S4 core-shell structure S-scheme heterostructure for efficient photocatalytic hydrogen evolution

Nano Energy, Journal Year: 2024, Volume and Issue: 126, P. 109632 - 109632

Published: April 18, 2024

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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Ionic liquid/covalent organic framework/silica composite material: Green synthesis and chromatographic evaluation

Analytica Chimica Acta, Journal Year: 2023, Volume and Issue: 1283, P. 341992 - 341992

Published: Nov. 1, 2023

Language: Английский

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