Ta3N5/CdS Core–Shell S-scheme Heterojunction Nanofibers for Efficient Photocatalytic Removal of Antibiotic Tetracycline and Cr(VI): Performance and Mechanism Insights

Advanced Fiber Materials, Journal Year: 2023, Volume and Issue: 5(3), P. 994 - 1007

Published: Feb. 16, 2023

Language: Английский

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Covalent organic frameworks towards photocatalytic applications: Design principles, achievements, and opportunities

Coordination Chemistry Reviews, Journal Year: 2022, Volume and Issue: 475, P. 214882 - 214882

Published: Oct. 14, 2022

Language: Английский

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Boosted Photoreforming of Plastic Waste via Defect-Rich NiPS₃ Nanosheets

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(11), P. 6410 - 6419

Published: March 13, 2023

Sustainable conversion of plastic waste to mitigate environmental threats and reclaim value is important. Ambient-condition photoreforming practically attractive convert hydrogen (H2); however, it has poor performance because mutual constraint between proton reduction substrate oxidation. Here, we realize a cooperative photoredox using defect-rich chalcogenide nanosheet-coupled photocatalysts, e.g., d-NiPS3/CdS, give an ultrahigh H2 evolution ∼40 mmol gcat-1 h-1 organic acid yield up 78 μmol within 9 h, together with excellent stability beyond 100 h in commercial poly(lactic acid) poly(ethylene terephthalate). Significantly, these metrics represent one the most efficient reported. In situ ultrafast spectroscopic studies confirm charge transfer-mediated reaction mechanism which d-NiPS3 rapidly extracts electrons from CdS boost evolution, favoring hole-dominated oxidation improve overall efficiency. This work opens practical avenues for converting into fuels chemicals.

Language: Английский

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Enabling Internal Electric Fields to Enhance Energy and Environmental Catalysis

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(11)

Published: Jan. 29, 2023

Abstract Recent years have witnessed an upsurge of interest in exploiting advanced photo‐/electrocatalysts for efficient energy conversion and environmental remediation. Constructing internal electric fields has been highlighted as a rising star to help facilitate various catalytic processes, with the merits promoting charge transfer/separation, optimizing redox potential creating effective active/adsorption sites. Internal are usually formed by polarization uneven distributions between different constituent layers, which widely exist piezoelectrics, polar surface terminations, heterostructure materials. Herein, groundbreaking interdisciplinary overview latest advances construction improve photo(electro)catalytic electrocatalytic activity is provided. This critical review begins encyclopedic summary classification, advantages, synthesis strategies fields. Subsequently, identification methods thoroughly discussed based on characterization techniques, experiments, theoretical calculations, can provide profound guidance in‐depth study To elaborate theory–structure–activity relationships fields, corresponding reaction mechanisms, modification strategies, performance jointly discussed, along discussion their practical applications. Finally, insightful analysis challenges future prospects field‐based catalysts discussed.

Language: Английский

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Refining electronic properties of Bi2MoO6 by In-doping for boosting overall nitrogen fixation via relay catalysis

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 330, P. 122643 - 122643

Published: March 15, 2023

Language: Английский

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Conjugated Coordination Polymer as a New Platform for Efficient and Selective Electroreduction of Nitrate into Ammonia

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(10)

Published: Jan. 18, 2023

Electroreduction of nitrate into ammonia (NRA) provides a sustainable route to convert the widespread pollutants high-value-added products under ambient conditions, which unfortunately suffers from unsatisfactory selectivity due competitive hydrogen evolution reaction (HER). Previous strategies modifying metal sites catalysts often met dilemma for simultaneously promoting activity and toward NRA. Here, general strategy is reported enable an efficient selective NRA process through coordination modulation single-atom tailor local proton concentration at catalyst surface. By contrast, two analogous Ni-single-atom enriched conjugated polymers (NiO4 -CCP NiN4 -CCP) with different motifs are investigated proof-of-concept study. The NiO4 exhibits yield rate as high 1.83 mmol h-1 mg-1 Faradaic efficiency 94.7% current density 125 mA cm-2 , outperforming catalyst. These experimental theoretical studies both suggest that can not only accelerate by adjusting adsorption energies intermediates on but also inhibit HER regulating migration contributions metal-hydrated cations adsorbed surface, thus achieving simultaneous enhancement activity.

Language: Английский

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0D/2D Schottky junction synergies with 2D/2D S-scheme heterojunction strategy to achieve uniform separation of carriers in 0D/2D/2D quasi CNQDs/TCN/ZnIn2S4 towards photocatalytic remediating petroleum hydrocarbons polluted marine

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 325, P. 122387 - 122387

Published: Jan. 6, 2023

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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Photogenerated Defect‐Transit Dual S‐Scheme Charge Separation for Highly Efficient Hydrogen Production

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(42)

Published: June 16, 2023

Abstract The rational design of a step‐scheme (S‐scheme) heterojunctions in hybrid semiconductors by avoiding unwanted charge transport paths is considered as an attractive way to achieve high photocatalytic activity hydrogen evolution reaction (HER). Here, dual S‐scheme heterojunction formed the lychee‐shaped W 18 O 49 /CdWO 4 /CdS nanostructures proposed for improving performance HER under visible light irradiation. remarkable attributed unique structure and effective separation photoinduced defect‐transit mechanism strong internal electric field. measurements X‐ray photoelectron spectroscopy (XPS), femtosecond transient absorption (fs‐TA) spectroscopy, electron paramagnetic resonance (EPR) further confirm carrier transfer pathways following mechanism. This research can provide new strategy designing improve through defect band engineering.

Language: Английский

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Unraveling Synergistic Effect of Defects and Piezoelectric Field in Breakthrough Piezo‐Photocatalytic N₂ Reduction

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(5)

Published: Aug. 28, 2023

Piezo-photocatalysis is a frontier technology for converting mechanical and solar energies into crucial chemical substances has emerged as promising sustainable strategy N

Language: Английский

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