Asymmetric framework engineering of carbon nitride nanotubes for polarization promoted H2O2 photosynthesis

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125073 - 125073

Published: Jan. 1, 2025

Language: Английский

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One‐Pot Synthesis of Fully Conjugated Covalent Organic Frameworks via the Pictet–Spengler Reaction for Boosting H₂O₂ Photogeneration in Real Seawater

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 24, 2025

Abstract Photosynthesizing H 2 O from real seawater is a promising and green avenue but suffers salt‐deactivated effects with limitations on stability photocatalytic activity. Herein, by the Pictet–Spengler reaction, two fully conjugated thieno[3,2‐c]pyridine‐linked covalent organic frameworks (named TBA‐COF TCA‐COF) are synthesized for photoproduction first time. Without sacrificial agents in , TCA‐COF exhibit impressive generation rates of 8878 6023 µmol g −1 h solar‐to‐chemical conversion efficiency 0.62% 0.42%, respectively, superior to their Schiff base analogs. Further experimental theoretical investigations reveal that, compared imine‐linkage counterparts, one‐pot cyclized TCA‐COF, reaction improves charge carrier separation efficiency, alters photoreduction center triazine benzene parts pyridine units, modulates energy band structures drive 2e − oxygen reduction water oxidation thereby enhances photosynthetic Notably, seawater‐produced flow reactors packed can be directly utilized E. coli sterilization. The present study highlights construction robust COFs thieno[3,2‐c]pyridine linkage via sustainable producing seawater.

Language: Английский

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Unlocking Topological Effects in Covalent Organic Frameworks for High‐Performance Photosynthesis of Hydrogen Peroxide

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

Published: Nov. 7, 2024

Covalent organic frameworks (COFs) offer a compelling platform for the efficient photosynthesis of hydrogen peroxide (H

Language: Английский

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Enhancement of Photocatalytic Self-Fenton Degradation toward Sulfamethoxazole by Highly Symmetrical Triazine-based Covalent Organic Frameworks

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125062 - 125062

Published: Jan. 1, 2025

Language: Английский

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Hydrogen-bonded organic frameworks for photocatalytic synthesis of hydrogen peroxide

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: March 11, 2025

Photocatalysis provides a sustainable and environment-friendly strategy to produce H2O2, yet the catalytic efficiency of H2O2 overall photosynthesis (O2 + 2H2O → 2H2O2) needs be further improved, especially in absence additional cocatalysts, photosensitizers sacrificial agents. Here we find that hydrogen-bonded organic frameworks can serve as photocatalysts for under above-mentioned conditions. Specifically, constructed donor–acceptor framework exhibits high photocatalytic activity photosynthesis, with production rate 681.2 μmol g-1 h-1. The control experiments theoretical calculation revealed structures not only accelerate charge separation transfer but also optimize reaction pathways, which significantly boosts photosynthesis. This work insights into design development efficient A series were developed production. These materials are shown facilitate pathway toward H2O2.

Language: Английский

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Overall photosynthesis of hydrogen peroxide with redox-active catechol moiety by modulating charge behavior of polydopamine-coated engineered carbon nitride

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: unknown, P. 124863 - 124863

Published: Nov. 1, 2024

Language: Английский

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Pyrimidine-containing covalent organic frameworks for efficient photosynthesis of hydrogen peroxide via one-step two electron oxygen reduction process

Nano Research, Journal Year: 2024, Volume and Issue: 17(11), P. 9498 - 9506

Published: Aug. 17, 2024

Language: Английский

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A Dual‐Active Covalent Triazine Framework Film for Efficient Visible‐Light‐Driven Hydrogen Peroxide Production

Small, Journal Year: 2024, Volume and Issue: 20(44)

Published: July 7, 2024

Photocatalytic hydrogen peroxide production from water and oxygen offers a clean sustainable alternative to the conventional energy-intensive anthraquinone oxidation method. Compared powdered covalent triazine frameworks (CTFs), film morphology of CTFs provides better connectivity in 2D, yielding several advantages: more efficient connections between active sites, reduced electron-hole pair recombination, increased resistance superoxide radical induced corrosion, decreased light scattering. Leveraging these benefits, it has incorporated dual sites for both reduction reaction (ORR) (WOR) into CTF system. This dual-active demonstrated an exceptional rate 19 460 µmol h⁻¹ m⁻

Language: Английский

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Covalent organic frameworks for high-performance rechargeable lithium metal batteries: Strategy, mechanism, and application

Progress in Materials Science, Journal Year: 2025, Volume and Issue: unknown, P. 101455 - 101455

Published: Feb. 1, 2025

Language: Английский

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Boosting hydrogen peroxide photosynthesis via a 1D/2D S-scheme heterojunction constructed by a covalent triazine framework with dual O2 reduction centers

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2025, Volume and Issue: 69, P. 315 - 326

Published: Feb. 1, 2025

Language: Английский

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