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<p>Nitrogen-doped biochar is a promising catalyst for peroxydisulfate (PDS)-based Fenton-like reaction, however, such high-performance catalytic material requires further development and optimization. This work fabricated a novel N-doped biochar material using a two-step calcination method with glycerol as the carbon source (N-GC). The prepared catalyst was employed to activate PDS to effectively remove organic dyes. The physico-chemical properties of the catalysts were characterized using various techniques. The results revealed that this catalyst possessed a large specific surface area and rich in the N-containing species. Notably, the catalyst was stable under a wide range of pH environment and resistant to anionic inference. Scavenging experiments and electron spin resonance analysis confirmed that the radical (O<sub>2</sub><sup>• −</sup>) and non-radical (<sup>1</sup>O<sub>2</sub> and electron transfer) species played key roles in the N-GC/PDS system. This study provided a new strategy for designing the N-doped biochar and using non-metal heterogeneous catalysts to remove organic pollutants in wastewater.</p>

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Nitrogen Doped Glycerol-Based Biochar as Effective Catalyst Activating Peroxydisulfate for Organic Dyes Removal

  • 期刊论文

  • 发表日期：

    2025年6月5日

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  • Cai-Wu Luo,
  • Chao Xie,
  • Qing-Qing Chen,
  • Yu Zhang,
  • Liang Jiang,
  • Run-Ze Zhao,
  • Jing-Jing Luo,
  • Tian-Jiao Jiang

摘要

Nitrogen-doped biochar is a promising catalyst for peroxydisulfate (PDS)-based Fenton-like reaction, however, such high-performance catalytic material requires further development and optimization. This work fabricated a novel N-doped biochar material using a two-step calcination method with glycerol as the carbon source (N-GC). The prepared catalyst was employed to activate PDS to effectively remove organic dyes. The physico-chemical properties of the catalysts were characterized using various techniques. The results revealed that this catalyst possessed a large specific surface area and rich in the N-containing species. Notably, the catalyst was stable under a wide range of pH environment and resistant to anionic inference. Scavenging experiments and electron spin resonance analysis confirmed that the radical (O2• −) and non-radical (1O2 and electron transfer) species played key roles in the N-GC/PDS system. This study provided a new strategy for designing the N-doped biochar and using non-metal heterogeneous catalysts to remove organic pollutants in wastewater.