Scholarlink

<p>The catalytic degradation of methyl orange (MO) through peroxymonosulfate (PMS) activation was investigated using xCuZnO nanoparticles (x = 10, 30, and 50 wt%), synthesized via the sol–gel method and calcined at 500&#xa0;°C. The prepared and calcined samples were characterized by X-ray diffraction (XRD), nitrogen adsorption–desorption, Raman spectroscopy, scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM–EDX), X-ray photoelectron spectroscopy (XPS), and UV–Vis diffuse reflectance spectroscopy. The characterization results evidenced the coexistence of ZnO and CuO crystalline phases, along with a slight contraction of ZnO lattice upon increasing copper loading. All catalysts exhibited notable activity for MO degradation, with PMS addition, enhancing significantly the degradation rate from 45 to 90% within just 2 min while maintaining appreciable stability over 30 to 60 min. Mechanistic investigations revealed that superoxide radicals (O<sub>2</sub>•⁻) were the primary reactive species responsible in MO degradation, along with photogenerated holes (h⁺) and electrons (e⁻), which also contributed to the overall photodegradation process. These findings highlight the potential of CuZnO/PMS system as an efficient alternative for industrial effluent 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

Synergistic effect of CuZnO material and peroxymonosulfate in the catalytic degradation of methyl orange

  • 期刊论文

  • 发表日期：

    2026年1月29日

查看全文
  • Ouzna Kheffache,
  • Ibtissem Lounas,
  • Samira Slyemi,
  • Hassiba Messaoudi,
  • José María Conesa,
  • Inmaculada Rodríguez-Ramos,
  • Hanane Zazoua

摘要

The catalytic degradation of methyl orange (MO) through peroxymonosulfate (PMS) activation was investigated using xCuZnO nanoparticles (x = 10, 30, and 50 wt%), synthesized via the sol–gel method and calcined at 500 °C. The prepared and calcined samples were characterized by X-ray diffraction (XRD), nitrogen adsorption–desorption, Raman spectroscopy, scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM–EDX), X-ray photoelectron spectroscopy (XPS), and UV–Vis diffuse reflectance spectroscopy. The characterization results evidenced the coexistence of ZnO and CuO crystalline phases, along with a slight contraction of ZnO lattice upon increasing copper loading. All catalysts exhibited notable activity for MO degradation, with PMS addition, enhancing significantly the degradation rate from 45 to 90% within just 2 min while maintaining appreciable stability over 30 to 60 min. Mechanistic investigations revealed that superoxide radicals (O2•⁻) were the primary reactive species responsible in MO degradation, along with photogenerated holes (h⁺) and electrons (e⁻), which also contributed to the overall photodegradation process. These findings highlight the potential of CuZnO/PMS system as an efficient alternative for industrial effluent treatment.