Published: Jan. 1, 2025
Language: Английский
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown
Published: Aug. 20, 2024
Photocatalytic synthesis of H
Language: Английский
Citations
22
Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(43), P. 29943 - 29954
Published: Oct. 17, 2024
The development of green and efficient hydrogen peroxide (H
Language: Английский
Citations
22
Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)
Published: Jan. 8, 2025
The conversion of solar energy into chemical or high-value chemicals has attracted considerable research interest in the context global crisis. Hydrogen peroxide (H2O2) is a versatile and powerful oxidizing agent widely used synthesis medical disinfection. H2O2 also serves as clean source fuel cells, generating electricity with zero-carbon emissions. Recently, sustainable production from water oxygen using covalent organic frameworks (COFs) photocatalysts attention; however, systematic studies highlighting role linkages determining photocatalytic performance are scarce. Under these circumstances, herein, we demonstrate that varying imine hydrazone within framework significantly influences production. COFs high-density linkages, providing optimal docking sites for oxygen, enhance generation activity (1588 μmol g−1 h−1 pure air), leading to highly efficient solar-to-chemical conversion. This work systematically investigates effect linkage density on enhancement hydrogen generation, aim achieving high-performance photocatalysis.
Language: Английский
Citations
12
Macromolecular Rapid Communications, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 12, 2025
Abstract Photocatalytic production of hydrogen peroxide (H 2 O ) represents a significant approach to achieving sustainable energy generation through solar energy, addressing both shortages and environmental pollution. Among various photocatalytic materials, covalent organic frameworks (COFs) have gained widespread attention in‐depth research due their unique advantages, including high porosity, predesignability, atomic‐level tunability. In recent years, progress has been made in the development, performance enhancement, mechanistic understanding COF‐based photocatalysts. This review focuses on latest advancements H using COFs, particularly emphasizing rational design COF structures regulate catalytic exploring fundamental processes involved photocatalysis. Based current achievements this field, paper also discusses existing challenges future opportunities, aiming provide reference for application COFs production.
Language: Английский
Citations
12
Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 124998 - 124998
Published: Jan. 1, 2025
Language: Английский
Citations
8
ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 3584 - 3594
Published: Feb. 13, 2025
Photocatalytic hydrogen peroxide (H2O2) production via the oxygen reduction reaction (ORR) provides a promising and energy-saving alternative to traditional energy-intensive anthraquinone process. Nevertheless, how decrease energy barrier of two-electron (2e–) ORR process photosynthesize H2O2 efficiently is still challenging. Herein, three hydroxyl-functionalized donor–acceptor covalent organic frameworks (COFs) are synthesized for photocatalytic under visible-light irradiation (420 ≤ λ 780 nm). It observed that dihydroxyl functionalization (2,5-DhaTph 2,3-DhaTph) facilitates transportation photogenerated carriers between acceptor donor units accelerates kinetics rate-limiting step when comparing with monohydroxyl (2-DhaTph). Further, 2,5-DhaTph para-position hydroxyl shows higher photosynthesis efficiency than 2,3-DhaTph (ortho-positioned hydroxyl), probably due greater exposure catalytically active sites. This supported by better structural symmetry 2,5-DhaTph, which contributes crystallinity specific surface areas. Electron paramagnetic resonance (EPR) spectra theoretical calculations show produces *OOH intermediates reduced barrier, resulting in high rate 2103.1 μmol h–1 g–1. Regulating amount substituents their location on COFs an effective strategy boost carrier transfer reduce O2-to-H2O2 conversion.
Language: Английский
Citations
5
Journal of Cleaner Production, Journal Year: 2025, Volume and Issue: unknown, P. 145361 - 145361
Published: March 1, 2025
Language: Английский
Citations
4
Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 516, P. 215997 - 215997
Published: June 5, 2024
Language: Английский
Citations
17
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 27, 2024
Abstract Photocatalysis leverages solar energy to overcome the thermodynamic barrier, enabling efficient chemical reactions under mild conditions. It can greatly reduce reliance on traditional sources and has attracted significant research interest. Reticular materials, including metal‐organic frameworks (MOFs) covalent organic (COFs), represent a class of crystalline materials constructed from molecular building blocks linked by coordination bonds, respectively. function as heterogeneous catalysts, combining well‐defined structures high tailorability akin homogeneous catalysts. In this review, regulation light absorption, charge separation, surface in photocatalytic process through precise molecular‐level design based features reticular is elaborated. Notably, for MOFsmicroenvironment modulation around catalytic sites affects performance delved, with emphasis their unique dynamic flexible microenvironments. For COFs, inherent excitonic effects due fully nature discussed highlight strategies regulate charge‐ and/or energy‐transfer‐mediated photocatalysis. Finally, current challenges future directions field, aiming provide comprehensive understanding how be optimized enhanced photocatalysis discussed.
Language: Английский
Citations
11
Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 678, P. 1170 - 1180
Published: Sept. 23, 2024
Language: Английский
Citations
10