Scholarlink

<p>This study presents a novel magnetic nanoparticle (MPs)-decorated chitosan aerogel (CSA) composite as an efficient and eco-friendly catalyst for the Fenton oxidation of high-concentration p-nitrophenol (PNP). The MPs/CSA composite was synthesized via co-precipitation and systematically characterized using X-ray diffraction analysis, Fourier transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, Brunauer–Emmett–Teller multimolecular layer adsorption, and high-resolution transmission electron microscopy. Strikingly, under optimal conditions for PNP degradation at a high concentration of 2000&#xa0;mg/L via the Fenton reaction, MPs/CSA-3, with 0.7&#xa0;g of Fe₃O₄ NPs loaded on CSA, a catalyst dosage of 4.6&#xa0;g/L, and a H₂O₂ concentration of 5.0&#xa0;g/L, achieved a 91% removal efficiency within 60&#xa0;min, following a pseudo-first-order kinetic model with a rate constant of 0.0417&#xa0;min⁻<sup>1</sup>. Compared to pure Fe₃O₄ NPs, the composite exhibited significantly enhanced catalytic activity and was easily separated from the solution via vacuum filtration within 5&#xa0;s, achieving approximately 80% catalytic degradation. These findings highlight the potential of MPs/CSA as a cost-effective and efficient catalyst for removing hazardous organic pollutants in wastewater treatment.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Boosting Heterogeneous Fenton Catalytic Reactivity for p-Nitrophenol Degradation via Embedding Magnetic Fe3O4 Nanoparticles on Chitosan Aerogel

  • 期刊论文

  • 发表日期：

    2025年4月18日

查看全文
  • Phuong Nghi Nguyen Tran,
  • Thanh Gia-Thien Ho,
  • Ba Long Do,
  • Thi Thu Thuy Nguyen,
  • Thi Thuy Van Nguyen,
  • Hong Phuong Phan,
  • Huynh Ky Phuong Ha,
  • Nguyen Tri

摘要

This study presents a novel magnetic nanoparticle (MPs)-decorated chitosan aerogel (CSA) composite as an efficient and eco-friendly catalyst for the Fenton oxidation of high-concentration p-nitrophenol (PNP). The MPs/CSA composite was synthesized via co-precipitation and systematically characterized using X-ray diffraction analysis, Fourier transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, Brunauer–Emmett–Teller multimolecular layer adsorption, and high-resolution transmission electron microscopy. Strikingly, under optimal conditions for PNP degradation at a high concentration of 2000 mg/L via the Fenton reaction, MPs/CSA-3, with 0.7 g of Fe₃O₄ NPs loaded on CSA, a catalyst dosage of 4.6 g/L, and a H₂O₂ concentration of 5.0 g/L, achieved a 91% removal efficiency within 60 min, following a pseudo-first-order kinetic model with a rate constant of 0.0417 min⁻1. Compared to pure Fe₃O₄ NPs, the composite exhibited significantly enhanced catalytic activity and was easily separated from the solution via vacuum filtration within 5 s, achieving approximately 80% catalytic degradation. These findings highlight the potential of MPs/CSA as a cost-effective and efficient catalyst for removing hazardous organic pollutants in wastewater treatment.