Highly efficient nitrogen fixation over S-scheme heterojunction photocatalysts with enhanced active hydrogen supply

National Science Review, Journal Year: 2024, Volume and Issue: 11(5)

Published: March 8, 2024

ABSTRACT Photocatalytic N2 fixation is a promising strategy for ammonia (NH3) synthesis; however, it suffers from relatively low yield due to the difficulty in design of photocatalysts with both high charge transfer efficiency and desirable adsorption/activation capability. Herein, an S-scheme CoSx/ZnS heterojunction dual active sites designed as efficient photocatalyst. The exhibits unique pocket-like nanostructure small ZnS nanocrystals adhered on single-hole CoSx hollow dodecahedron. Within heterojunction, electronic interaction between creates electron-deficient Zn enhanced chemisorption electron-sufficient Co hydrogen supply hydrogenation, cooperatively reducing energy barrier activation. In combination promoted photogenerated electron-hole separation facilitated mass by nanostructure, excellent performance NH3 1175.37 μmol g−1 h−1 achieved. This study provides new insights into fixation.

Language: Английский

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Boosting Photocatalytic Upcycling of Liquid Biomass into Biodiesel via Microenvironment Modulation

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 13, 2024

Abstract The rational design of a photocatalyst and its microenvironmental modulation is crucial in the heterogeneous photocatalysis process, yet relevant research on photocatalytic biodiesel synthesis not explored. Herein, based prediction density functional theory (DFT) calculations, highly efficient ternary biocompatible montmorillonite (Mt) nanocomposites S‐scheme heterojunction photocatalysts (g‐C 3 N 4 ‐TiO 2 @Mt, CTM) are successfully rationally designed. By modulating microenvironment production, CTM‐2 demonstrates exceptional catalytic performance stability, achieving record‐breaking yield 98.5%. Through ex/in situ X‐ray photoelectron spectroscopy (XPS), absorption near‐edge (XANES), theoretical formation revealed, which can generate an interface electric field (IEF) that provides intrinsic driving force for carrier migration enhances surface positivity. This boosts enrichment effect electronegative oleic acid (OA) carboxyl molecules, thus greatly enriching substrate concentration improving reaction microenvironment. Moreover, fourier transform infrared spectrometer (FT‐IR)/Raman together with electron paramagnetic resonance (EPR) further confirm key intermediates CH O• ester carbonyl (C═O), DFT calculations provide reference pathway, determined to be capable significantly reducing energy barrier rate‐determining step.

Language: Английский

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Mofs-based S-scheme heterojunction photocatalysts: Challenges and prospects to break the selectivity limitation for intensified C1 products in CO2 photoreduction

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160238 - 160238

Published: Feb. 1, 2025

Language: Английский

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Empowering wastewater treatment with step scheme heterojunction ternary nanocomposites for photocatalytic degradation of nitrophenol

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 26, 2025

The ongoing challenge of water pollution necessitates innovative approaches to remove organic contaminants from wastewater. In this work, new two-dimensional S-scheme heterojunction photocatalysts Bi2O3/CdS and MoS2/Bi2O3/CdS that are intended for the effective photocatalytic destruction 4-nitrophenol, a dangerous pollutant, synthesized characterized. Utilizing solvothermal method, successfully generated these ternary nanocomposites, which were characterized through various techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), photoelectron spectroscopy (XPS), high resolution transmission electronmicroscopy (HRTEM), Brunauer-Emmett-Telle (BET) diffuse reflectance (DRS). Our results demonstrated achieved an 86% degradation rate while composite exhibited exceptional performance, achieving nearly complete (99%) within 120 min under visible light irradiation. Most importantly improved activity originated release internal electric field in heterojunction. This enhanced is attributable synergistic effects heterojunctions facilitate more charge separation generation with OP RP confirmed synthesis using S-scheme. further by XPS, DRS, XPS-VB photocurrent response. These findings highlight promising application advanced real-world wastewater treatment processes, offering sustainable solution combat pollution.

Language: Английский

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Synthesis of the composites of carbon quantum dots and metal organic framework and their application in hydrogen evolution

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 68, P. 321 - 330

Published: April 27, 2024

Language: Английский

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Cross‐Referencing Multifluid Metabolic Profiles on Hollow Dodecahedral Nanocages for Enhanced Disease Status Identification

Small, Journal Year: 2025, Volume and Issue: 21(9)

Published: Feb. 5, 2025

Abstract The development of matrices has shown great potential for fluid metabolic analysis in disease detection. However, single‐fluid metabolomic been recognized as insufficient to fully capture the complexities diseases such liver disease, which limits detection accuracy. To this end, hollow dodecahedral nanocages‐based analytical tool is developed, featuring four‐high characteristics speed, throughput, efficiency, and patient compliance, enhance extraction multifluid profiles. cross‐referencing these profiles among different diseases, including hepatocellular carcinoma (HCC), chronic (CLD), healthy controls, enhances diagnosis particularly achieving near‐perfect discrimination HCC with an AUC value 0.990, significantly outperforming any single analysis. Additionally, dynamic changes expression levels key biomarkers throughout progression are explored, providing insights into their temporal evolution, highlighting role monitoring status. This work highlights that can comprehensively sensitively reflect status, enabling precise identification complex facilitating personalized treatment.

Language: Английский

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Efficient and Stable Photocatalytic Degradation of Triazophos Pesticides by g-C3N4/WO2.72 Nanocomposite with S-scheme Heterojunction and Oxygen Vacancies

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(5), P. 113587 - 113587

Published: July 15, 2024

Language: Английский

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Elucidating the synergistic effect of oxygen vacancies and Z-scheme heterojunction in NU-1000/BiOCl-Ov composites towards enhanced photocatalytic degradation of tetracycline hydrochloride

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 683, P. 848 - 859

Published: Dec. 17, 2024

Language: Английский

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Metal-organic framework-based catalysts for solar-driven CO2 cycloaddition

Applied Materials Today, Journal Year: 2025, Volume and Issue: 42, P. 102595 - 102595

Published: Jan. 14, 2025

Language: Английский

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Principles, progress, and prospects of photo-rechargeable zinc-ion batteries

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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