Rational Design of Covalent Organic Frameworks for Photocatalytic Hydrogen Peroxide Production

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

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Constructing Interfacial B–P Bonding Bridge to Promote S-Scheme Charge Migration within Heteroatom-Doped Carbon Nitride Homojunction for Efficient H₂O₂ Photosynthesis

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

The emerging step (S)-scheme heterojunction systems became a powerful strategy in promoting photogenerated charge separation while maintaining their high redox potentials. However, the weak interfacial interaction limits migration rate S-scheme heterojunctions. Herein, we construct unique carbon nitride (CN) homojunction with boron (B)-doped CN and phosphorus (P)-doped (B-CN/P-CN) for hydrogen peroxide (H2O2) photosynthesis. B-CN/P-CN nanosheet composites revealed extensively tight contact, improved visible-light harvesting, reduced carrier lifetime. structural investigation results also indicate that chemical B–P bonding is formed between B-CN P-CN nanosheets, inducing an accelerated migration. Density functional theory calculations further clarify transfer mechanism. Consequently, 2e– oxygen reduction reaction was predominant pathway of H2O2 production, facilitated by homojunction. optimal yield reached 2199.5 μmol L–1 h–1 over (S3) photocatalyst under monochromatic LED irradiation, increasing 2–8 times as against most C3N4 photocatalysts. This study highlights crucial role heterojunction/homojunction materials, accompanied unveiling mechanism solar-energy conversions.

Language: Английский

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Novel N-deficient g-C3N4 /Ni(OH)2 2D heterojunction design for efficient photocatalytic H2 evolution

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115447 - 115447

Published: Jan. 1, 2025

Language: Английский

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Thiophene and Acetylene Functionalized Conjugated Organic Polymers with Hollow Nanotube Structure toward High-Performance Photocatalytic H2O2 Production

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(1), P. 115319 - 115319

Published: Jan. 5, 2025

Language: Английский

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Regulating Substituents in Coplanar 2D Ladder Polymers for Enhanced Photocatalytic Production of H₂O₂

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

Photocatalytic hydrogen peroxide (H2O2) production using conjugated polymers as photocatalysts is a green and sustainable approach to synthesizing H2O2. Nevertheless, the efficiency still hindered by inefficient charge separation transfer dynamics. Herein, series of coplanar 2D ladder with different substituents were reported metal-free for artificial photosynthesis Detailed experimental theoretical investigations reveal that skeleton strong electron-withdrawing could profoundly facilitate transfer. Possessing these notable merits, cyano-substituted polymer (PAE-CN) exhibits remarkable photocatalytic performance on H2O2 evolution. This study contributes development effective tailored potential applications in photosynthesis.

Language: Английский

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Construction of a novel S-scheme CaIn2S4-ZnO/pine cone-derived biochar for enhanced visible-light-induced photocatalytic H2O2 production and antibiotic degradation

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 71, P. 107111 - 107111

Published: Feb. 6, 2025

Language: Английский

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Constructing a 2D Heterointerface of MoS₂/MnIn₂S₄ with Improved Interfacial Charge Carrier Transfer for Photocatalytic H₂O₂ Production

ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Language: Английский

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Two-Dimensional S-Scheme Engineering in Bi₂WO₆/S_V-ZnIn₂S₄ for Solar-Driven H₂O₂ Generation in Pure Water

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

The development of eco-friendly hydrogen peroxide (H2O2) synthesis through the photocatalytic oxygen reduction reaction holds significant potential for sustainable chemical engineering; however, it remains hindered by necessity sacrificial agents. Herein, we construct a two-dimensional (2D) S-scheme heterojunction interfacial coupling S-vacancy-rich ZnIn2S4 (SV-ZIS) with Bi2WO6 (BWO) nanosheets via an in situ growth method. Band alignment engineering establishes giant built-in electric field at Bi2WO6/SV-ZIS interface, which drives directional charge transfer, leaving photogenerated electrons and holes highest redox potentials accumulated on BWO SV-ZIS, respectively, O2 H2O oxidation. This spatial separation mechanism enhances both electron-hole pair dissociation efficiency (validated transient photocurrent analysis) preserves strong (reflected free-radical capturing experiments). 2D/2D architecture further amplifies migration atomic-level contact, leading to efficient H2O2 production rate 822 μmol L-1 h-1 pure water. work provides strategy designing high-performance photocatalysts toward under environmentally benign conditions.

Language: Английский

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Recent updates on full solar spectrum metal sulphides photocatalyst for hydrogen peroxide generation: Modification strategies and Mechanistic insights

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: unknown, P. 115151 - 115151

Published: Dec. 1, 2024

Language: Английский

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