Wirunchit, Supamas

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Preferred name
Wirunchit, Supamas
Alternative Name
Wirunchit, S.
Main Affiliation
Email
supamas.wi@kmitl.ac.th

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    Item type:Publication,
    ZnO Nanoparticles Synthesis and Characterization by Hydrothermal Process for Biological Applications
    (2023-05-01)
    Wirunchit, Supamas
    ;
    Koetniyom, Wantana
    This research is interested in the development of zinc oxide (ZnO) nanoparticle synthesis by hydrothermal precipitation solutions for biological applications. The synthesis of ZnO nanoparticles study from zinc nitrate (Zn(NO<inf>3</inf>)<inf>2</inf>) precursor under the three precipitator solutions consists of potassium hydroxide (KOH), sodium hydroxide (NaOH), and ammonium hydroxide (NH<inf>4</inf>OH), respectively. The synthesis of ZnO nanoparticles is investigated using the following techniques: X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and Raman spectroscopy techniques. The structure and size of the ZnO nanoparticles are analyzed by using a field emission scanning electron microscope (FE-SEM), and finally, the antibacterial efficacy of the ZnO nanoparticles is studied. The hydrothermal synthesis condition realizes that the smallest ZnO nanoparticles come from the zinc nitrate (Zn(NO<inf>3</inf>)<inf>2</inf>) precursor reacted with sodium hydroxide (NaOH) precipitator at 120 °C for 4 h.
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    Item type:Publication,
    Synthesis of ZnO nanoparticles by Ball-milling process for biological applications
    (2021-01-01)
    Wirunchit, S.
    ;
    Gansa, P.
    ;
    Koetniyom, W.
    This research is focus on synthesis of ZnO nanoparticles (ZnO-NPs) for biological application by Ball-milling process. This research presents the synthesis of ZnO nanoparticles with the difference calcined temperatures ranging from 400 to 900 °C effect on size and morphology. The synthesis ZnO nanoparticles were characterized by employing technique including X-ray diffraction technique (XRD), Fourier Transform Infrared spectroscopy (FT-IR) and Raman spectroscopy. The morphology and size of ZnO nanoparticles determined by Field Emission Scanning Electron Microscope (FE-SEM) and finally studied the effect of antibacterial activity of ZnO NPs. It was found that the temperature at which high purity ZnO is = 800 °C. Especially, at 800 °C, the smallest particle size of ZnO nanoparticles was obtained. The morphology of ZnO nanoparticles from Ball-milling process is spherical. Bacteriological properties of ZnO nanoparticles were found that the synthesis by using the Ball-milling process was high effective to inhibit bacteria.