Iron-based metal–organic frameworks and their derived materials for photocatalytic and photoelectrocatalytic reactions

Coordination Chemistry Reviews, Год журнала: 2023, Номер 499, С. 215538 - 215538

Опубликована: Ноя. 1, 2023

Язык: Английский

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Covalent Organic Frameworks Enable Sustainable Solar to Hydrogen Peroxide

Advanced Functional Materials, Год журнала: 2023, Номер 34(12)

Опубликована: Дек. 6, 2023

Abstract As a chemical product with rapidly expanding demand in the field of modern energy and environmental applications, hydrogen peroxide (H 2 O ) has garnered widespread attention. However, existing industrial production H is plagued by high consumption, harmful waste emission, severe safety issues, making it difficult to satisfy environmental/economic concept. Artificial photosynthesis offers viable strategy for green sustainable since uses sunlight as an source initiate reaction oxygen water produce . Among various photocatalysts, covalent organic frameworks (COFs), featuring highly ordered skeletons well‐defined active sites, have emerged promising photocatalysts production. This review presents nascent burgeoning area photocatalytic based on COFs. First, brief overview technology provided, followed detailed introduction principles evaluation generation. Subsequently, latest research progress judicious design COFs expounded, particular emphasis manipulating electronic structures redox sites. Finally, outlook challenges future opportunities proposed, hope stimulating further explorations novel molecular‐designed photosynthesis.

Язык: Английский

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Extending the π-conjugation system of covalent organic frameworks for more efficient photocatalytic H₂O₂ production

Green Chemistry, Год журнала: 2023, Номер 25(8), С. 3069 - 3076

Опубликована: Янв. 1, 2023

Three highly crystalline and porous COFs with promising photoredox properties have been prepared. Via a post-sulfurization process, the imine-linked were converted into thiazole-linked COFs, generating conjugated ultrastable photocatalyst for H 2 O production.

Язык: Английский

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Covalent organic frameworks (COFs) and metal–organic frameworks (MOFs) as electrochemical sensors for the efficient detection of pharmaceutical residues

Environment International, Год журнала: 2023, Номер 175, С. 107928 - 107928

Опубликована: Апрель 11, 2023

Pharmaceutical residues are the undecomposed remains from drugs used in medical and food industries. Due to their potential adverse effects on human health natural ecosystems, they of increasing worldwide concern. The acute detection pharmaceutical can give a rapid examination quantity then prevent them further contamination. Herein, this study summarizes discusses most recent porous covalent-organic frameworks (COFs) metal–organic (MOFs) for electrochemical various residues. review first introduces brief overview drug toxicity its living organisms. Subsequently, different materials techniques discussed with materials' properties applications. Then development COFs MOFs has been addressed structural sensing Further, stability, reusability, sustainability MOFs/COFs reviewed discussed. Besides, MOFs' limits, linear ranges, role functionalities, immobilized nanoparticles analyzed Lastly, summarized [email protected] composite as sensors, fabrication strategies enhance potential, current challenges area.

Язык: Английский

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Optimizing Intermediate Adsorption via Heteroatom Ensemble Effect over RuFe Bimetallic Alloy for Enhanced Nitrate Electroreduction to Ammonia

Advanced Energy Materials, Год журнала: 2023, Номер 13(31)

Опубликована: Июнь 30, 2023

Abstract The electrochemical nitrate reduction reaction (NO 3 RR) is a promising approach for removal and NH synthesis at ambient conditions. As complex eight‐electron/nine‐proton transfer process, its performance relies heavily on the adsorption ability of intermediates catalyst surface, which determined by geometric electronic configurations active sites. In this work, heteroatom ensemble effect deliberately triggered over RuFe bimetallic alloy to optimize intermediate NO RR. A record‐high yield rate 118.8 mg h −1 high Faradaic efficiency 92.2% are achieved −1.4 V vs reversible hydrogen electrode, ranking top state‐of‐the‐art. Experimental computational results reveal that characteristics induced play crucial roles. Both Ru Fe display continuous state throughout Fermi level, suggesting electron density benefits whole result, facilitated − , efficient stabilization key intermediates, as well timely desorption simultaneously achieved, thus significantly promoting direct .

Язык: Английский

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Photocatalysis for synergistic water remediation and H2 production: A review

Chemical Engineering Journal, Год журнала: 2023, Номер 472, С. 145066 - 145066

Опубликована: Июль 29, 2023

Язык: Английский

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In Situ Construction of Metal–Organic Frameworks as Smart Channels for the Effective Electrocatalytic Reduction of Nitrate at Ultralow Concentrations to Ammonia

ACS Catalysis, Год журнала: 2023, Номер 13(13), С. 9125 - 9135

Опубликована: Июнь 26, 2023

Electrochemical conversion of nitrate, a widespread water pollutant, into high-value-added ammonia is renewable and delocalized route to restore the globally perturbed nitrogen cycle. However, premature desorption catalytic intermediates competitive reaction hydrogen evolution make current performance still far from suitable for practical applications. In this work, Zr-based metal–organic framework (MOF) in situ constructed at interface serve as smart channel highly selective electrocatalytic reduction nitrate ammonia. The secondary coordination interaction introduced by pendant Brønsted acidic groups MOF not only effectively stabilize facilitate overall process but also certainly increase proton activation barrier suppress competing reaction. When coupled with nanocluster active center, proof-of-concept system achieves simultaneous improvement three critical parameters, rate 97.6%, an selectivity 95.2%, Faradaic efficiency 91.4% −1.0 V (vs RHE) under ultralow concentration conditions. This strategy provides interesting application MOFs paves way removal its

Язык: Английский

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Covalent organic frameworks in heterogeneous catalysis: recent advances and future perspective

Materials Chemistry Frontiers, Год журнала: 2023, Номер 7(16), С. 3298 - 3331

Опубликована: Янв. 1, 2023

This review provides an overview of the recent advances in heterogeneous catalysis using COFs, primarily from 2020 to 2023, covering fundamentals, advantages, current challenges, and future perspectives.

Язык: Английский

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Structural Motifs in Covalent Organic Frameworks for Photocatalysis

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Март 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

Язык: Английский

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Deciphering Electrolyte Selection for Electrochemical Reduction of Carbon Dioxide and Nitrogen to High‐Value‐Added Chemicals

Advanced Functional Materials, Год журнала: 2023, Номер 33(11)

Опубликована: Янв. 4, 2023

Abstract Electrochemical reduction of CO 2 (CO RR) and nitrogen (NRR) constitute alternatives to fossil fuel‐based technologies for the production high‐value‐added chemicals. Yet their practical application is still hampered by low energy Faradaic efficiencies although numerous efforts have been paid overcome fatal shortcomings. To date, most studies focused on designing developing advanced electrocatalysts, while understanding electrolyte, which would significantly influence reaction microenvironment, are not enough provide insight construct highly active selective electrochemical systems. Here, a comprehensive review different electrolytes participating in RR NRR provided, including acidic, neutral, alkaline, water‐in‐salt electrolyte as aqueous electrolytes, well organic ionic‐liquids mixture two non‐aqueous electrolytes. Through discussion roles these various it aimed grasp essential function during process how functions can be used design parameters improving electrocatalytic performance. Finally, priorities future suggested support in‐depth effects thus guide efficient selection next‐generation gas‐involving reactions.

Язык: Английский

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