Ultrafast electron transfer at the In2O3/Nb2O5 S-scheme interface for CO2 photoreduction

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

Published: June 5, 2024

Abstract Constructing S-scheme heterojunctions proves proficient in achieving the spatial separation of potent photogenerated charge carriers for their participation photoreactions. Nonetheless, restricted contact areas between two phases within heterostructures lead to inefficient interfacial transport, resulting low photocatalytic efficiency from a kinetic perspective. Here, In 2 O 3 /Nb 5 are fabricated through straightforward one-step electrospinning technique, enabling intimate and thereby fostering ultrafast electron transfer (<10 ps), as analyzed via femtosecond transient absorption spectroscopy. As result, powerful photo-electrons holes accumulate Nb conduction band valence band, respectively, exhibiting extended long lifetimes facilitating involvement subsequent Combined with efficient chemisorption activation stable CO on , hybrid nanofibers demonstrate improved performance conversion.

Language: Английский

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Covalent Organic Frameworks for Photocatalytic Reduction of Carbon Dioxide: A Review

ACS Nano, Journal Year: 2024, Volume and Issue: 18(33), P. 21804 - 21835

Published: Aug. 8, 2024

Covalent organic frameworks (COFs) are crystalline networks with extended backbones cross-linked by covalent bonds. Due to the semiconductive properties and variable metal coordinating sites, along rapid development in linkage chemistry, utilization of COFs photocatalytic CO2RR has attracted many scientists' interests. In this Review, we summarize latest research progress on for CO2 reduction. first part, present COF linkages that have been used CO2RR, discuss four mechanisms including as intrinsic photocatalysts, photosensitive motifs metalated semiconductors heterojunction photocatalysts. Then, principles structural designs functional building units stacking mode exchange. Finally, outlook challenges provided. This Review is intended give some guidance design synthesis diverse different linkages, various structures, divergent modes efficient photoreduction CO2.

Language: Английский

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Sulfur-vacancy-modified ZnIn2S4/TpPa-1 S-scheme heterojunction with enhanced internal electric field for boosted photocatalytic hydrogen production

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 358, P. 124366 - 124366

Published: July 3, 2024

Language: Английский

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Modulating Adsorption–Redox Sites and Charge Separation of Cs₃Bi₂Br_9–x@AgBr Core–Shell Heterostructure for Selective Toluene Photooxidation

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(4), P. 1743 - 1752

Published: March 26, 2024

Constructing vacancy-decorated heterojunction photocatalysts is a feasible strategy for highly efficient photooxidation of toluene to benzaldehyde. However, poor interface interaction and vacancy-triggered mismatched redox kinetics seriously impede photocatalytic activity improvement. Herein, chemically bonded Cs3Bi2Br9–x@AgBr core–shell with unified adsorption-redox sites fabricated via an in-situ light-assisted Ag+ insertion method. Experiments theoretical calculations demonstrate that the type-II band alignment interfacial Bi–Br–Ag bonds boosts charge separation. Moreover, because greater oxygen adsorption energy steric-hindrance effect AgBr shell, preferred site O2 modulated from Br vacancy (VBr, trapping holes) its corresponding reduction (AgBr, gathering electrons), thereby ensuring VBr-enhancing adsorption/oxidation on Cs3Bi2Br9. Therefore, exhibits improved benzaldehyde production rate 5.61 mmol g–1 h–1 (selectivity: 91%), outperforming pure Cs3Bi2Br9 by factor 6. This work underlines importance rational design heterointerface at atomic level in photocatalysis.

Language: Английский

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Progress of Covalent Organic Framework Photocatalysts: From Crystallinity–Stability Dilemma to Photocatalytic Performance Improvement

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(15), P. 11675 - 11704

Published: July 22, 2024

Language: Английский

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Charge-transfer dynamics in S-scheme photocatalyst

Nature Reviews Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Language: Английский

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Inorganic–Organic Bi₄Nb_1–xTa_xO₈Cl/rGO/SA-PTA Z-Scheme Heterojunction with a Third-Order Polarized Electric Field and a Fast Electron Transfer Channel for Photocatalytic Overall Water Splitting

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 5155 - 5170

Published: March 12, 2025

Language: Английский

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Asymmetric electronic distribution induced enhancement in photocatalytic CO2-to-CH4 conversion via boron-doped covalent triazine frameworks

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 685, P. 766 - 773

Published: Jan. 20, 2025

Language: Английский

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Quantum dots in S-scheme photocatalysts

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

Published: Dec. 1, 2024

Language: Английский

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Perovskite Paradigm Shift: A Green Revolution with Lead-Free Alternatives in Photocatalytic CO₂ Reduction

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(4), P. 1932 - 1975

Published: April 4, 2024

Carbon dioxide (CO2), an archetypal greenhouse gas, can be transformed into valuable fuels through photocatalysis, presenting auspicious avenue for combating global climate change and energy crisis. While halide perovskites have sparked substantial research interest, concerns over lead toxicity spurred exploration of their lead-free counterparts CO2 photoreduction. This comprehensive Review navigates the fundamentals reduction, delving basic principles, mechanisms, relevant operando techniques. It then introduces diverse structures (LFHPs), synthesis methodologies, intrinsic properties that render them suitable Subsequently, unfolds application modification strategies light-driven conversion, highlighting breakthroughs shedding light on potential mechanisms. Finally, current challenges to tailor LFHPs robust photocatalytic reduction are critically discussed, offering insights future in this realm. aims illuminate path toward sustainable bridging knowledge gaps inspiring innovations a greener carbon-neutral tomorrow.

Language: Английский

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