Dual Charge Transfer Mechanisms in Intimately Bonded S‐scheme Heterojunction Photocatalyst with Expeditious Activity toward Environmental Remediation

Advanced Sustainable Systems, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

Abstract Fabrication of a photocatalyst with the desired characteristics high charge isolation and expeditious photocatalytic performance is crucial in photocatalysis. Constructing an interfacial chemically bonded S‐scheme heterojunction effective path to realization transfer performance. Herein, Mg‐Bi 2 O 3 /dark gray g‐C N 4 (MBOdCN) Bi‐N bond bridges successfully constructed using situ calcination strategy for oxytetracycline (OTC) degradation. The MBOdCN (1:5) displays outstanding efficiency rate constant 99.56% 0.0235 min −1 , respectively. synergy n‐π* transition, Mg defects, Bi–N enhances heterojunction. X‐ray photoelectron spectroscopy (XPS) analysis, work function measurements, density functional theory (DFT) reveal formation In this system, trapping experiments electron‐spin resonance (ESR) confirm predominance • − > h + OH during OTC degradation pathways byproducts are investigated LC‐MS toxicity study undertaken on materials. This provides holistic understanding novel by introducing chemical defects as dual channels.

Language: Английский

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Construction of 2D/2D S-scheme Pg-C3N4/Fe2TiO5 Nanosheets with Enhanced Photogenerated Charge Separation for Highly Selective Photoconversion of CO2 into Fuels

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179287 - 179287

Published: Feb. 1, 2025

Language: Английский

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Engineering g-C3N4/Bi2WO6 Composite Photocatalyst for Enhanced Photocatalytic CO2 Reduction

Coatings, Journal Year: 2025, Volume and Issue: 15(1), P. 32 - 32

Published: Jan. 2, 2025

As global CO2 emissions continue to rise, addressing their environmental impact is critical in combating climate change. Photocatalytic reduction, which mimics natural photosynthesis by converting into valuable fuels and chemicals using solar energy, represents a promising approach for both reducing storing energy sustainably. However, the development of efficient photocatalysts, particularly those capable absorbing visible light, remains challenge. Graphitic carbon nitride (g-C3N4) has gained attention its light absorption chemical stability, though performance hindered rapid electron–hole recombination. Similarly, bismuth tungstate (Bi2WO6) visible-light-active photocatalyst with properties, but also suffers from limited efficiency due charge To overcome these limitations, this study focuses on design synthesis g-C3N4/Bi2WO6 composite photocatalyst, leveraging complementary properties materials. The benefits enhanced separation through formation heterojunction, recombination rates improving overall photocatalytic performance. optimized exhibited significant improvements production CH4 CO, achieving 18.90 17.78 μmol/g/h, respectively, are 2.6 times 1.6 higher than pure Bi2WO6. explores how optimizing interface, increasing surface area, adjusting material ratios can further enhance reduction. Our findings demonstrate potential solar-driven conversion, offering new insights paving way future advancements mitigation technologies.

Language: Английский

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Synchronizing directional photogenerated electrons and holes through Ag and Bi bimetallic modification toward sustained hydrogenation process in CO2 methanation reaction

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 131786 - 131786

Published: Jan. 1, 2025

Language: Английский

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Unravelling the adsorption photocatalytic synergistic mechanism of Bi0 introduction for phosphorus recovery and reuse

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 365, P. 132767 - 132767

Published: March 31, 2025

Language: Английский

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Tailoring the structural design of covalent organic frameworks for enhanced photocatalytic carbon dioxide reduction: a review

Renewable and Sustainable Energy Reviews, Journal Year: 2025, Volume and Issue: 217, P. 115754 - 115754

Published: April 21, 2025

Language: Английский

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Ag2S/NiCo2S4@g-C3N4 heterostructure: A dual-functional catalyst for enhanced photocatalytic degradation and oxygen evolution reactions

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 163452 - 163452

Published: May 1, 2025

Language: Английский

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Zn2+-decorated porous g-C3N4 with nitrogen vacancies: Synthesis, enhanced photocatalytic performance and mechanism in degrading organic contaminants

Materials Research Bulletin, Journal Year: 2024, Volume and Issue: 183, P. 113193 - 113193

Published: Nov. 10, 2024

Language: Английский

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Green preparation of nitrogen vacancies enriched g-C3N4 for efficient photocatalytic reduction of CO2 and Cr(VI)

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 682, P. 446 - 459

Published: Dec. 1, 2024

Language: Английский

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Novel S-Scheme Loofah Biochar/Mos2/G-C3n4 Heterojunctions with Efficient Photogenerated Carrier Separation and Transfer Capability: Effect, Mechanism and Application

Published: Jan. 1, 2025

The construction of S-scheme heterojunctions has drawn widespread attention within the photocatalysis field due to their capacity for efficient separation photogenerated carriers, leading excellent photo-oxidation-reduction performance. Herein, a novel loofah biochar/MoS2/g-C3N4 (LB/MS/CN) heterojunction was successfully constructed by ultrasonication in 50% ethyl alcohol and heat treatment N2 atmosphere. Degradation experiments showed that 5% LB/MS/CN ternary photocatalyst had optimal photocatalytic efficiency (96.4%) degradation rhodamine B (RhB), reaction rate (k) this (0.05420 min-1) 5.4 times unmodified CN (0.01001 min-1). Ultraviolet-visible diffuse reflectance spectra, Mott-Schottky, free radical trapping suggested carriers were transferred through structure. Consequently, co-catalytic action LB synergistic impact structure between MS led reduced carrier recombination rate. Furthermore, outstanding stability maintain RhB performance under various environmental conditions (H2PO4-, NO3-, SO42-, HCO3-, NaCl, HA, real water), showing good promise practical applications. Thus, work provides possible strategy purifying wastewater visible light.

Language: Английский

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