Defect and nanostructure engineering of polymeric carbon nitride for visible-light-driven CO2 reduction

Chinese Journal of Structural Chemistry, Journal Year: 2024, Volume and Issue: 43(3), P. 100245 - 100245

Published: Feb. 5, 2024

Language: Английский

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Boosting Carrier Separation on a BiOBr/Bi₄O₅Br₂ Direct Z-Scheme Heterojunction for Superior Photocatalytic Nitrogen Fixation

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(8), P. 5779 - 5787

Published: April 1, 2024

Photocatalytic dinitrogen (N2) fixation is regarded as an achievable technology for ammonia (NH3) production. However, the poor separation efficiency of photoinduced carriers and ineffective N2 activation remain grand obstacles to high-performance NH3 photosynthesis. Designing advanced heterostructured systems accelerate charge activate molecule a feasible strategy optimize photocatalytic activity. Herein, direct Z-scheme configuration established between BiOBr Bi4O5Br2 through facile one-step solvothermal reaction. This enables effective spatial electron–hole pairs preserves robust redox ability carriers, concurrently promoting N≡N bond diminishing energy barrier rate-determining step. The formation BiOBr/Bi4O5Br2 heterojunctions mostly attributed similarities in their lattice structures crystal growth conditions. As result, heterojunction exhibits high yield 66.87 μmol g–1 h–1 without using sacrificing reagents, surpassing that pristine by approximately 3.3 5.6 times, respectively. study provides approach construct implementing under mild

Language: Английский

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Construction of Frustrated Lewis Pairs in Poly(heptazine Imide) Nanosheets via Hydrogen Bonds for Boosting CO₂ Photoreduction

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(36)

Published: June 7, 2024

The creation of frustrated Lewis pairs on catalyst surface is an effective strategy for tuning CO

Language: Английский

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Endowing polymeric carbon nitride photocatalyst with CO2 activation sites by anchoring atomic cobalt cluster

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 486, P. 150306 - 150306

Published: March 11, 2024

Language: Английский

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Unveiling the synergistic role of nitrogen vacancies and Z-scheme heterojunction in g-C3N4/β-Bi2O3 hybrids for enhanced CO2 photoreduction

Nano Energy, Journal Year: 2024, Volume and Issue: 124, P. 109494 - 109494

Published: March 13, 2024

Language: Английский

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Photothermally enabled black g-C3N4 hydrogel with integrated solar-driven evaporation and photo-degradation for efficient water purification

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 129751 - 129751

Published: Sept. 1, 2024

Language: Английский

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Photochemical Tuning of Tricoordinated Nitrogen Deficiency in Carbon Nitride to Create Delocalized π Electron Clouds for Efficient CO₂ Photoreduction

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(13), P. 10204 - 10213

Published: June 21, 2024

Precisely engineering point defects holds promise for the development of state-of-the-art photocatalysts CO2 conversion. This study demonstrates controllable creation nitrogen vacancies (VNs) in centers heptazine rings graphitic carbon nitrides (g-C3N4) via a photochemical-assisted etching strategy. Spectroscopic analyses and theoretical simulations elucidate photochemical process to hydrogenate situated at center g-C3N4 ring then release an ammonia molecule, accompanied by photooxidation sacrificial agents. The catalyst with optimal VNs concentration achieves CO generation rate 35.2 μmol g–1 h–1 nearly 100% selectivity, comparable performance reported materials. remarkably improved photoactivity is due adjustments electronic structures midgap states delocalized π electron cloud created 12-membered surrounding VN, which maximizes light-harvesting efficiencies suppresses recombination photogenerated electrons holes. also activates neighboring catalytic reduce energy barrier reduction. work provides good design concept regulate activity defects.

Language: Английский

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Metal‐Organic Frameworks‐Based Copper Catalysts for CO₂ Electroreduction Toward Multicarbon Products

Exploration, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

ABSTRACT Copper (Cu) is the most promising catalyst for electrochemical CO 2 ‐to‐C 2+ conversion, whereas performance remains below practical thresholds due to high energy barrier of C−C coupling and lack effective approaches steer reaction pathway. Recent advances show that metal‐organic frameworks (MOF) could be a platform as support, pre‐catalyst, co‐catalyst modify electronic structure local environment Cu catalysts promoting reduction by virtue their great tunability over compositions pore architectures. In this review, we discussed general design principles, catalytic mechanisms, achievements MOF‐based catalysts, aiming boost refinement steering pathway C products. The fundamentals challenges are first introduced. Then, summarized conceptions from three aspects: engineering properties Cu, regulating environment, managing site exposure mass transport. Further, latest progress products namely Cu‐based MOF, MOF‐derived Cu@MOF hybrid discussed. Finally, future research opportunities strategies suggested innovate rational advanced electrifying transformation.

Language: Английский

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Highly efficient photocatalytic nitrogen fixation of ZnWO4/g-C3N4 S-scheme heterojunction nanofibers: Synergistic effect of water molecules deprotonation and photogenerated electrons

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162402 - 162402

Published: Jan. 1, 2025

Language: Английский

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Outstanding CO₂ Photoreduction in Single‐Atom Thulium Modified Carbon Nitride

Advanced Science, Journal Year: 2024, Volume and Issue: 11(38)

Published: Aug. 9, 2024

CO

Language: Английский

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