Efficient photocatalytic H2O2 production and photodegradation of RhB over K-doped g-C3N4/ZnO S-scheme heterojunction

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 677, P. 1120 - 1133

Published: July 30, 2024

Language: Английский

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N3C-Defect-Tuned g-C3N4 Photocatalysts: Structural Optimization and Enhanced Tetracycline Degradation Performance

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(6), P. 466 - 466

Published: March 19, 2025

The introduction of nitrogen defects in graphitic carbon nitride (g-C3N4) has the important effect improving its photocatalytic performance. This study employs a simple and environmentally friendly one-step pyrolysis method, successfully preparing g-C3N4 materials with adjustable N3C defect concentrations through calcination urea ammonium acetate mixture. By introducing adjusting band structure, conduction was shifted downward by 0.12 V, overcoming traditional application limitations enabling an innovative transition from enhanced oxidation to reduction capabilities. significantly adsorption activation O2. Characterization results showed that increased specific surface area 44.07 m2/g 87.08 m2/g, enriching reactive sites, while narrowing bandgap 2.41 eV visible light absorption capacity. activity, achieving peak performance 54.8% for tetracycline (TC), approximately 1.5 times original g-C3N4, only 5.4% (49.4%) decrease efficiency after four cycles testing. demonstrates enhances expanding potential applications environmental remediation.

Language: Английский

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Donor‐Acceptor Substituted Carbon Nitride Enables Efficient and Colorful Phosphors

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

Abstract Graphitic carbon nitride (g‐CN) is a polymeric semiconductor with low‐cost synthesis, adjustable structure, and excellent stability, which attracts great attention widely used as photocatalyst. On the contrary, it isn't considered promising fluorescent material due to inefficient radiative recombination of electron‐hole pairs. Here, efficient multicolor‐emitting g‐CN phosphors are presented by integrating donor‐acceptor substituents in order replace expensive rare earth‐based phosphors. By incorporating phenyl donor benzonitrile an acceptor, aromatic groups enhance structural rigidity improve photoluminescence (PL) efficiency; meanwhile, extends π ‐conjugated system g‐CN, promotes electron delocalization results tunable PL spectra. As result, substituted materials exhibit blue yellow light emission reach record quantum yield (PLQY) 57%. A white light‐emitting diode fabricated combining modified commercial 450 nm chips, produce bright chromaticity coordinates (0.34, 0.32). The findings provide rational design for high‐performance emitter highlight potential applications optoelectronic devices indoor lighting.

Language: Английский

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Discovery of baicalein derivatives as novel covalent inhibitors of SARS CoV-2 Mpro: Structure-activity relationships and inhibitory mechanisms

Bioorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 108560 - 108560

Published: May 1, 2025

Language: Английский

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