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<p>Zinc oxide (ZnO) nanoparticles have been identified as a highly efficient and recyclable catalyst for the microwave-assisted synthesis of 1,8-dioxooctahydroxanthenes in an ethanol solvent medium. In this study, ZnO nanoparticles were synthesized via a green approach using <i>Mirabilis Jalapa</i> flower extract as a natural reducing agent, offering an eco-friendly and sustainable alternative to conventional chemical methods.The nanoparticles were thoroughly characterized using ultraviolet–visible (UV–vis) spectroscopy, Field-Emission Scanning Electron Microscopy (FE-SEM), Transmission Electron Microscope (TEM), Energy Dispersive X-ray analysis (EDX), Elemental Mapping, X-ray diffraction (XRD), Thermogravimetric analysis (TGA), X-ray Photoelectron Spectroscopy (XPS) analyses and Fourier Transform Infrared Spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) analysis. X-ray diffraction (XRD) results confirmed the formation of a crystalline hexagonal wurtzite structure. The catalyst demonstrated excellent recyclability, being easily recovered through simple filtration and reused for up to five consecutive cycles without significant loss of efficiency. This nanostructure-based heterogeneous catalytic protocol is not only sustainable and environmentally friendly but also economically advantageous due to the high recyclability of the catalyst.</p> Graphical abstract <p></p>

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Green synthesis of zinc oxide nanoparticles using Mirabilis Jalapa flower extract as a recyclable and heterogeneous nanocatalyst for the microwave assisted synthesis of 1, 8-dioxooctahydroxanthenes

  • 期刊论文

  • 发表日期：

    2025年10月22日

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  • Dhananjay N. Gaikwad,
  • Suresh T. Gaikwad,
  • Rajesh K. Manjul,
  • Anjali S. Rajbhoj,
  • Gaurav A. Varade,
  • Aishwarya S. Patil,
  • Mansi S. Patane,
  • Asmita A. Chandanshive,
  • Santosh B. Kamble

摘要

Zinc oxide (ZnO) nanoparticles have been identified as a highly efficient and recyclable catalyst for the microwave-assisted synthesis of 1,8-dioxooctahydroxanthenes in an ethanol solvent medium. In this study, ZnO nanoparticles were synthesized via a green approach using Mirabilis Jalapa flower extract as a natural reducing agent, offering an eco-friendly and sustainable alternative to conventional chemical methods.The nanoparticles were thoroughly characterized using ultraviolet–visible (UV–vis) spectroscopy, Field-Emission Scanning Electron Microscopy (FE-SEM), Transmission Electron Microscope (TEM), Energy Dispersive X-ray analysis (EDX), Elemental Mapping, X-ray diffraction (XRD), Thermogravimetric analysis (TGA), X-ray Photoelectron Spectroscopy (XPS) analyses and Fourier Transform Infrared Spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) analysis. X-ray diffraction (XRD) results confirmed the formation of a crystalline hexagonal wurtzite structure. The catalyst demonstrated excellent recyclability, being easily recovered through simple filtration and reused for up to five consecutive cycles without significant loss of efficiency. This nanostructure-based heterogeneous catalytic protocol is not only sustainable and environmentally friendly but also economically advantageous due to the high recyclability of the catalyst.

Graphical abstract