The evolution of photocatalytic H₂O₂ generation: from pure water to natural systems and beyond

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(18), P. 6482 - 6498

Published: Jan. 1, 2024

Exploring advancements in photocatalytic hydrogen peroxide production, emphasizing technological breakthroughs pure water, natural microdroplets and coupling systems.

Language: Английский

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Enhancing photocatalytic hydrogen peroxide generation by tuning hydrazone linkage density in covalent organic frameworks

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

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Proton reservoirs in polymer photocatalysts for superior H₂O₂ photosynthesis

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(10), P. 4612 - 4619

Published: Jan. 1, 2023

In H 2 O photosynthesis using polymer photocatalysts, functional groups as proton reservoirs are introduced to balance the supply and demand of protons between oxygen reduction water oxidation.

Language: Английский

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Recent Progress in Nonsacrificial H₂O₂ Generation Using Organic Photocatalysts and In Situ Applications for Environmental Remediation

Accounts of Materials Research, Journal Year: 2023, Volume and Issue: 5(1), P. 76 - 88

Published: Dec. 15, 2023

ConspectusThe photocatalytic generation of hydrogen peroxide (H2O2) through the utilization only H2O, O2, and sunlight represents an energy-efficient ecofriendly innovation in pursuit a sustainable society. Despite significant efforts that have been directed toward development H2O2 via photocatalysis, solar-to-chemical conversion (SCC) efficiency has not yet reached levels required for large-scale practical applications. Consequently, there is urgent demand to develop design novel photocatalysts characterized by several key attributes: high catalytic activity, cost-effectiveness, good stability. However, traditional inorganic photocatalysts, such as TiO2, exhibited limited partly attributable potential decomposition caused metal cations. Recent research found organic highly promising candidates address these limitations. Organic materials offer remarkable advantages including narrow bandgap, adjustable band edge potentials, ability control surface configurations use active sites, rational structural units promote efficient charge separation transfer. In field without sacrificial reagents, widely studied, various strategies improve activity stability explored. These include construction donor–acceptor structures, conjugated incorporation heteroatoms, enhancement internal electric field, substitution functional groups. Currently, exceptional far exceeding well-established TiO2.In this Account, we introduce state-of-the-art based on our recent works typical results from other This classification system encompasses anthraquinone-mediated oxygen reduction reaction (ORR), radical-related ORR, water oxidation (WOR), dual ORR WOR pathways. Through classification, delve into essential kinetic parameters, production rate, apparent quantum (AQE), SCC achieved. Additionally, highlight early exploration situ generated environmental remediation. Furthermore, outline forthcoming challenges suboptimal solar energy utilization, need clearer understanding structure–activity relationship, insufficient utilization. conclusion, Account makes substantial contribution providing comprehensive overview advancements us groups, addressing current challenges, suggesting areas future generation. The ultimate goal drive forward applications semiconductor fields, thereby advancing cause

Language: Английский

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Efficient H2O2 photocatalysis by a novel organic semiconductor with electron donor-acceptor interface

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 349, P. 123884 - 123884

Published: April 24, 2024

Language: Английский

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Chemically bonded nonmetallic LSPR S-scheme hollow heterostructure for boosting photocatalytic performance

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: unknown, P. 124656 - 124656

Published: Sept. 1, 2024

Language: Английский

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Terphenyl Functionalized Covalent Triazine Polymer as Metal‐Free Photocatalyst for Superior Hydrogen Peroxide Production

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(32)

Published: March 25, 2024

Abstract Artificial photosynthesis of H 2 O from and by visible light is a promising approach, but the efficiency still unsatisfactory because inefficient adsorption proton supply. Here, terphenyl functionalized covalent triazine polymer (CTP‐TD) prepared for efficient production. Experimental theoretical results show that structure can promote regulating oxygen evolution (O → 1 ) improve supply accelerating water oxidation. The significantly promotes singlet ( production via intersystem crossing (ISC) process. electrophilic more easily adsorbed on catalyst surface than . Simultaneously, accumulated holes at lower oxidation energy barriers accelerate dehydrogenation This work provides valuable reference new inspiration design generation perspective reactant

Language: Английский

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Recent developments in photocatalytic production of hydrogen peroxide

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(41), P. 5354 - 5368

Published: Jan. 1, 2024

This highlight article summarizes the recent developments and challenges in photocatalytic production of hydrogen peroxide looks forward to development direction this field.

Language: Английский

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Resorcinol‐Phthalaldehyde Resins for Photosynthesis of Hydrogen Peroxide: Modulation of Electronic Structure and Integration of Dual Channel Pathway

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(33)

Published: May 9, 2024

Abstract Modulating of electronic structure photocatalyst and integration dual channel pathway are promising strategy for efficient photosynthesis hydrogen peroxide (H 2 O ) from pure water without sacrificial agent oxygen exposure. In this work, nontoxic aromatic dialdehyde is used to replace the commonly toxic formaldehyde form resorcinol‐phthalaldehyde resins through a hydrothermal method. The introducing ring as π spacer increases separation distance electrons holes avoid their recombination. H can be produced via integrated reduction reaction (ORR) oxidation (WOR) due suitable energy band positions spatially separated sites. Resorcinol‐p‐phthalaldehyde (RP) resin exhibits yield 3351 µmol g −1 h with high apparent quantum (AQY) 14.9% at 420 nm solar‐to‐chemical conversion (SCC) efficiency 1.54%. This work provides simple modulate charge redox on molecular level design.

Language: Английский

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Photocatalytic H2O2 production from resorcinol-formaldehyde resin spheres with anthraquinone structure

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 338, P. 126527 - 126527

Published: Jan. 27, 2024

Language: Английский

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