Calcination temperature-dependent structural and photocatalytic properties of green-synthesized ZnO nanostructures using Mitragyna speciosa leaf extract

Authors

  • Thanyapa Sanyen Department of Nanoscience and Nanotechnology, School of Integrated Innovative Technology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, 10520, Thailand
  • Maneerat Songpanit Department of Nanoscience and Nanotechnology, School of Integrated Innovative Technology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, 10520, Thailand
  • Thanaphon Kansaard Department of Nanoscience and Nanotechnology, School of Integrated Innovative Technology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, 10520, Thailand
  • Sutee Chutipaijit Department of Nanoscience and Nanotechnology, School of Integrated Innovative Technology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, 10520, Thailand
  • Kanokthip Boonyarattanakalin Department of Nanoscience and Nanotechnology, School of Integrated Innovative Technology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, 10520, Thailand
  • Wisanu Pecharapa Department of Nanoscience and Nanotechnology, School of Integrated Innovative Technology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, 10520, Thailand
  • Wanichaya Mekprasart Department of Nanoscience and Nanotechnology, School of Integrated Innovative Technology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, 10520, Thailand

DOI:

https://doi.org/10.55674/cs.v18i3.266077

Keywords:

Green synthesis, Zinc oxide, Mitragyna speciosa Korth., Calcination, Photocatalytic

Abstract

ZnO nanostructures were prepared by a green synthesis route using Mitragyna speciosa Korth. leaf extract as a natural reducing agent in deionized (DI) water. The effect of calcination temperatures on the material properties of green-synthesized ZnO was systematically investigated. Calcination temperatures ranging from 250 to 550 °C were selected to facilitate the complete decomposition of precursor compounds and residual organic components, considering the thermal stability of ZnO and plant-derived organic species. ZnO nanostructures were characterized by XRD to identify crystallinity, FE-SEM to observe surface morphology, FTIR to confirm chemical bonding, and BET analysis to measure specific surface area.  The obtained ZnO photocatalyst was evaluated through rhodamine B (RhB) dye degradation assisted by the piezo-catalytic effect. The crystallinity, morphology, chemical bonding, surface area, and photocatalytic activity of naturally derived ZnO nanostructures were significantly altered by the calcination temperature, demonstrating their promise for environmental remediation

GRAPHICAL ABSTRACT

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HIGHLIGHTS

  • Green synthesis of ZnO nanostructures was achieved using Mitragyna speciosa leaf extract in an environmentally friendly and sustainable approach.
  • Calcination temperature plays a key role in tailoring the crystallinity, morphology, and specific surface area of green-synthesized ZnO nanostructures.
  • Enhanced photocatalytic and piezo-assisted performance of green-synthesized ZnO nanostructures at low calcination temperature was observed.

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2026-06-03

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Sanyen, T., Songpanit , M. ., Kansaard , T. ., Chutipaijit , S. ., Boonyarattanakalin , K., Pecharapa , W. ., & Mekprasart , W. (2026). Calcination temperature-dependent structural and photocatalytic properties of green-synthesized ZnO nanostructures using Mitragyna speciosa leaf extract. Creative Science, 18(3), 266077. https://doi.org/10.55674/cs.v18i3.266077

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Vol. 18 No. 3 (2026): Creative Science (September - December) (Upcoming Issue)

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