Boosting H2O2 photosynthesis by accumulating photo-electrons on carbonyl active site of polyimide covalent organic frameworks

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 355, P. 124077 - 124077

Published: May 14, 2024

Language: Английский

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Internal electric field steering S-scheme charge transfer in ZnIn2S4/COF boosts H2O2 photosynthesis from water and air for sustainable disinfection

npj Clean Water, Journal Year: 2025, Volume and Issue: 8(1)

Published: Jan. 21, 2025

Language: Английский

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Promoting photothermal catalytic CO2 reduction of Cd2In2S5/Cd0.3Zn0.7S heterojunction with encapsulated hydrogen evolution active site by accelerating charge transfer kinetics

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 476, P. 146442 - 146442

Published: Oct. 4, 2023

Language: Английский

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Advances in organic semiconductors for photocatalytic hydrogen evolution reaction

EES Catalysis, Journal Year: 2023, Volume and Issue: 1(4), P. 333 - 352

Published: Jan. 1, 2023

This article reviews organic photocatalyst hydrogen evolution reaction (HER), discussing the excitonic behaviour and improvement strategies. It also covers progress in photocatalysts, assesses HER efficiency stability.

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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Harmonizing the cyano-group and Na to enhance selective photocatalytic O ₂ activation on carbon nitride for refractory pollutant degradation

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(12)

Published: March 13, 2024

Manipulating exciton dissociation and charge-carrier transfer processes to selectively generate free radicals of more robust photocatalytic oxidation capacity for mineralizing refractory pollutants remains challenging. Herein, we propose a strategy by simultaneously introducing the cyano-group Na into graphitic carbon nitride (CN) obtain CN-Cy-Na, which makes pathways dominant process consequently achieves selective generation radicals. Briefly, intensifies local charge density CN, offering potential well attract hole exciton, accelerates dissociation. Meanwhile, separated electron transfers efficiently under built-in electric field induced Na, eventually accumulates in heptazine ring CN following O 2 reduction due reinforced sink effect caused Na. As result, CN-Cy-Na exhibits 4.42 mmol L −1 h productivity with 97.6% selectivity 82.1% total organic removal efficiency tetracycline photodegradation within 6 h. Additionally, also shows outstanding pollutants, including antibiotics, pesticide plastic additives, dyes. This work presents an innovative approach manipulating enhancing mobility two-dimensional photocatalysts, opening avenue precise control radical generation.

Language: Английский

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Achieving a solar-to-chemical efficiency of 3.6% in ambient conditions by inhibiting interlayer charges transport

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: June 26, 2024

Abstract Efficiently converting solar energy into chemical remains a formidable challenge in artificial photosynthetic systems. To date, rarely has an system operating the open air surpassed highest solar-to-biomass conversion efficiency (1%) observed plants. In this study, we present three-dimension polymeric photocatalyst achieving solar-to-H 2 O of 3.6% under ambient conditions, including real water, air, and room temperature. The impressive performance is attributed to efficient storage electrons inside materials via expeditious intramolecular charge transfer, fast extraction stored by that can diffuse internal pores self-supporting three-dimensional material. This construction strategy suppresses interlayer transfer excitons, polarizers carriers, effectively increases utilization excitons 82%. breakthrough provides perspective substantially enhance photocatalytic bear substantial implications for sustainable generation environmental remediation.

Language: Английский

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Rationally construction of atomic-precise interfacial charge transfer channel and strong build-in electric field in nanocluster-based Z-scheme heterojunctions with enhanced photocatalytic hydrogen production

Nano Research, Journal Year: 2024, Volume and Issue: 17(6), P. 5002 - 5010

Published: Feb. 29, 2024

Language: Английский

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Enhanced photocatalytic ammonia oxidation over WO3@TiO2 heterostructures by constructing an interfacial electric field

Chemosphere, Journal Year: 2024, Volume and Issue: 355, P. 141811 - 141811

Published: March 28, 2024

Language: Английский

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Tandem Proton Transfer in Carboxylated Supramolecular Polymer for Highly Efficient Overall Photosynthesis of Hydrogen Peroxide

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(38)

Published: July 3, 2024

Proton supply is as critical O

Language: Английский

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