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<p>This study investigates the synthesis and characterization of cerium oxide-copper oxide-zinc oxide (CeO<sub>2</sub>-CuO-ZnO; CeCZ) nanocomposites via microwave irradiation to enhance photocatalytic efficiency for environmental remediation. CeCZ nanocomposites were synthesized at microwave power levels ranging from 300 to 800 Watts, and their photocatalytic performance was assessed using Rhodamine B dye degradation. The characterization methods used were X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), BET surface area analysis, and UV-Visible diffuse reflectance spectroscopy (UV-DRS). The CeCZ-300 nanocomposite, synthesized at 300 Watts, exhibited superior photocatalytic performance with 96.9% degradation efficiency and a kinetic rate constant of 0.0242&#xa0;min⁻<sup>1</sup>, attributed to its higher surface area (85.27&#xa0;m² g⁻<sup>1</sup>) and reduced particle size. Life Cycle Assessment (LCA) highlighted the environmental benefits of using lower microwave power, showing reduced greenhouse gas emissions and overall environmental impact, with electricity consumption identified as the primary factor. The study also demonstrated significant environmental impact reductions when using renewable energy sources for synthesis and photocatalytic processes. While focused on laboratory-scale processes, this research provides insights for industrial applications, emphasizing the potential of microwave-assisted synthesis in developing efficient and sustainable photocatalysts for environmental remediation.</p>

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Microwave-assisted synthesis and photocatalytic degradation of organic pollutant using CeO2-CuO-ZnO nanocomposite: environmental relevance and life cycle assessment

  • 期刊论文

  • 发表日期：

    2025年2月4日

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  • Putthadee Ubolsook,
  • Krissana Khamfong,
  • Pongthep Jansanthea,
  • Weerasak Chomkitichai,
  • Jiraporn Ketwaraporn,
  • Singhadej Tangjuank,
  • Chaowarit Wansao,
  • Aimon Wanaek,
  • Atit Wannawek,
  • Yanee Keereeta,
  • Surasak Kuimalee,
  • Pusit Pookmanee

摘要

This study investigates the synthesis and characterization of cerium oxide-copper oxide-zinc oxide (CeO2-CuO-ZnO; CeCZ) nanocomposites via microwave irradiation to enhance photocatalytic efficiency for environmental remediation. CeCZ nanocomposites were synthesized at microwave power levels ranging from 300 to 800 Watts, and their photocatalytic performance was assessed using Rhodamine B dye degradation. The characterization methods used were X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), BET surface area analysis, and UV-Visible diffuse reflectance spectroscopy (UV-DRS). The CeCZ-300 nanocomposite, synthesized at 300 Watts, exhibited superior photocatalytic performance with 96.9% degradation efficiency and a kinetic rate constant of 0.0242 min⁻1, attributed to its higher surface area (85.27 m² g⁻1) and reduced particle size. Life Cycle Assessment (LCA) highlighted the environmental benefits of using lower microwave power, showing reduced greenhouse gas emissions and overall environmental impact, with electricity consumption identified as the primary factor. The study also demonstrated significant environmental impact reductions when using renewable energy sources for synthesis and photocatalytic processes. While focused on laboratory-scale processes, this research provides insights for industrial applications, emphasizing the potential of microwave-assisted synthesis in developing efficient and sustainable photocatalysts for environmental remediation.