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February 27, 2026BiocharOpen Access

Synergistic enhancement of biochar in TiO2/g-C3N4 Z-scheme heterojunction photocatalysts: mechanistic insights into the degradation pathways of sulfonamide antibiotics

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Authors

XGXiang GuoHohai UniversityTZTong ZhouNorth China University of Water Resources and Electric PowerGWG WANGHenan University of Urban Construction

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Implication

Demonstrates the enhanced degradation of sulfonamide antibiotics using biochar-based photocatalysts, suggesting effective remediation strategies.

Key Points

  • The aim is to investigate how biochar enhances the performance of TiO2/g-C3N4 photocatalysts in degrading sulfonamide antibiotics.
  • Synthesized BC/TiO2/g-C3N4 composite using the sol-gel method.
  • Conducted degradation tests with sulfadiazine under simulated sunlight.
  • Analyzed charge transfer performance and energy band structure using density functional theory (DFT).
  • MBC-500 exhibited a 98.13% degradation rate for sulfadiazine within 60 minutes.
  • Catalytic performance was 3.46, 3.40, and 2.36 times better than TiO2, g-C3N4, and TiO2/g-C3N4, respectively.
  • Biochar significantly improved surface area and broadened visible light absorption.

Cite This Study

Guo et al. (2026) studied this question.

synapsesocial.com/papers/69a13591ed1d949a99abf957https://doi.org/10.1007/s42773-025-00552-1
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