Covalent Organic Frameworks for Photocatalytic Reduction of Carbon Dioxide: A Review

ACS Nano, Год журнала: 2024, Номер 18(33), С. 21804 - 21835

Опубликована: Авг. 8, 2024

Covalent organic frameworks (COFs) are crystalline networks with extended backbones cross-linked by covalent bonds. Due to the semiconductive properties and variable metal coordinating sites, along rapid development in linkage chemistry, utilization of COFs photocatalytic CO2RR has attracted many scientists' interests. In this Review, we summarize latest research progress on for CO2 reduction. first part, present COF linkages that have been used CO2RR, discuss four mechanisms including as intrinsic photocatalysts, photosensitive motifs metalated semiconductors heterojunction photocatalysts. Then, principles structural designs functional building units stacking mode exchange. Finally, outlook challenges provided. This Review is intended give some guidance design synthesis diverse different linkages, various structures, divergent modes efficient photoreduction CO2.

Язык: Английский

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Hybrid materials based on covalent organic frameworks for photocatalysis

InfoMat, Год журнала: 2024, Номер unknown

Опубликована: Дек. 9, 2024

Abstract Covalent organic frameworks (COFs) feature π‐conjugated structure, high porosity, structural regularity, large specific surface area, and good stability, being considered as ideal platform for photocatalytic application. Although single COFs have achieved significant progress in photocatalysis benefiting from their distinctive properties, the COFs‐based hybrids provide an extraordinary opportunity to achieve superior performance. From perspective of carrier transfer mechanism, a systematic summary based on other functional materials (metal atoms, metal clusters/nanoparticles, inorganic semiconductors, metal–organic frameworks, polymers) can offer valuable guidance design hybrids. In this review, mechanism hybrid (such Schottky junction, type II heterojunction, Z‐scheme S‐scheme heterojunction) is briefly introduced. Subsequently, performance water splitting, CO 2 reduction, pollutant degradation are comprehensively reviewed. Specifically, separation different types highlighted. Finally, challenges prospects envisaged. The insights presented review expected be helpful rational obtain outstanding activity. image

Язык: Английский

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Utility of silver nanoparticles embedded on covalent organic framework as a highly active catalyst for carboxylative cyclization with CO2: a sustainable route for production of tetronic acids and oxazolidinones

New Journal of Chemistry, Год журнала: 2024, Номер 48(26), С. 11982 - 11992

Опубликована: Янв. 1, 2024

The rising amount of carbon dioxide in our atmosphere is a concern regarding environment.

Язык: Английский

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The Development of Metal-Free Porous Organic Polymers for Sustainable Carbon Dioxide Photoreduction

Nanomaterials, Год журнала: 2024, Номер 14(17), С. 1432 - 1432

Опубликована: Сен. 2, 2024

A viable tactic to effectively address the climate crisis is production of renewable fuels via photocatalytic reactions using solar energy and available resources like carbon dioxide (CO2) water. Organic polymer material-based materials are thought be one way convert into valuable chemicals other fuels. The use porous organic polymers (POPs) for CO2 fixation capture sequestration produce beneficial compounds reduce global warming still receiving a lot interest. Visible light-responsive photopolymers that functionally designed include large number heteroatoms an extended π-conjugation allow generation photogenerated charge carriers, improved absorption visible light, increased separation, decreased recombination during photocatalysis. Due their rigid structure, high surface area, flexible pore size, permanent porosity, adaptability backbone intended purpose, POPs have drawn more attention. These qualities been shown highly advantageous numerous sustainable applications. may broadly categorized as crystalline or amorphous according how much long-range order they possess. In terms performance, conducting outperform inorganic semiconductors typical dyes. They light-harvesting with remarkable optical characteristics, photostability, cheap cost, low cytotoxicity. Through cocatalyst loading morphological tweaking, this review presents optimization options preparation techniques. We provide analysis ways in which preparative techniques will affect materials’ physicochemical characteristics and, consequently, catalytic activity. An inventory experimental methods provided characterizing POPs’ optical, morphological, electrochemical, characteristics. focus thoroughly investigate photochemistry these polymeric photocatalysts emphasis on understanding processes internal transport within POPs. covers several types POP materials, including those based conjugated microporous (CMPs), inherent microporosity polymers, hyper-crosslinked aromatic frameworks. Additionally, common synthetic approaches briefly discussed.

Язык: Английский

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CuxOy incorporated COF: A Potential Reusable Catalyst for the Synthesis of a‐hydroxy Ketones and Oxazolidinones under Atmospheric CO2 Pressure and Solvent‐free Conditions

ChemCatChem, Год журнала: 2024, Номер 16(22)

Опубликована: Авг. 13, 2024

Abstract In this present work, a newly designed metal‐oxide nanoparticle incorporated Covalent organic framework (COF), Cu x O y @TFP‐ODA has been successfully synthesized and used for the effective synthesis of Oxazolidinones a‐hydroxy ketones under mild conditions utilizing CO 2 . Initially, imine‐linked 2D COF, TFP‐ODA was by simple solvothermal method followed embedment copper oxide nanoparticles (NPs) into skeleton as‐synthesized COF. Different characterization techniques were employed to establish physical chemical characteristics both COF materials. To study catalytic efficiency highly porous @TFP‐ODA, three components coupling reaction involving primary amine, propargyl alcohol synthesize series 2‐Oxazolidinone α‐hydroxy using as Co‐catalyst carried out over as‐prepared catalyst green sustainable which illustrated excellent yields selectivity corresponding products. The proved be completely heterogeneous especially, material demonstrated significant potential reuse across several cycles.

Язык: Английский

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Photocatalysts in CO2 Direct Conversion to Methanol

Elsevier eBooks, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

Язык: Английский

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Photochemical N-Formylation of Amines and Cyclic Carbonate Synthesis from Epoxides by the Use of Light-Mediated Fixation of Carbon Dioxide Using Covalent Organic Framework/g-C₃N₄ Composites

Industrial & Engineering Chemistry Research, Год журнала: 2024, Номер unknown

Опубликована: Дек. 2, 2024

A proficient heterogeneous catalytic system for the photocatalytic N-formylation reaction of amines and cyclic carbonate synthesis from epoxides using CO2 as a carbon source under ambient conditions has been documented. sophisticated approach established current process, aiming successful production formamides carbonates with high levels selectivity efficiency by adjusting several variables such solvent, time, well light involved in reaction. We have synthesized two distinct catalysts, T-COF N-COF, along g-C3N4 heterojunction, demonstrating outstanding performance. Compared to g-C3N4@N-COF, g-C3N4@T-COF photocatalyst showed significantly better light-driven formation other suitable at room temperature. The g-C3N4@COF photocatalysts can be recycled used multiple times without any noticeable decrease efficiency.

Язык: Английский

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Revolutionizing CO2 conversion for single-carbon products: Unveiling the photocatalytic magic of M6@TiO2 via First-Principles insights

Applied Surface Science, Год журнала: 2024, Номер 685, С. 162085 - 162085

Опубликована: Дек. 12, 2024

Язык: Английский

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