Vol. 1 No. 1 (2021)

  • Open Access

    Article

    Article ID: 39

    Synthesis of MgO nanoparticles for different annealing temperatures and its biomedical applications

    by Annamalai Varathan Jaya Srinivasan, Iruson Baskaran, Balaraman Sathyaseelan, Krishnamoorthy Senthilnathan, Elayaperumal Manikandan

    Nano and Medical Materials, Vol.1, No.1, 2021; 247 Views, 167 PDF Downloads

    In this paper, we report the synthesis of MgO nanoparticles (NPs) by the co-precipitation method. The structural properties of the samples were characterised by X-ray diffraction, which revealed that the MgO Nps have a cubic structure. The functional groups of the as-synthesised samples were analysed by Fourier transform infrared spectroscopy. The optical properties of the as-synthesised samples were studied by UV-vis spectroscopy in the range of 200–800 nm, and the energy bandgap was calculated by the taus relation. The magnesium oxide (MgO) nanoparticles (NPs) showed significant dose-dependent bactericidal activity in both gram-negative and gram-positive bacteria. From the analysis of the antibacterial and antifungal activities of MgO NPs, it is revealed that the dose is sufficient for killing. These may be used in medical applications.

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  • Open Access

    Article

    Article ID: 145

    Preparation and analysis of silver nanoparticles (AgNPs) by plant extract techniques of green tea and study optical and structural properties

    by Ashraf M. Alattar, Nathera A. Al-tememee

    Nano and Medical Materials, Vol.1, No.1, 2021; 202 Views, 96 PDF Downloads

    In order to study the green creation of silver nanoparticles (AgNPs) by decreasing the Ag+ ions in a silver nitrate solution, green tea plant extract was utilized. The generated AgNPs were examined by UV-Vis spectroscopy, field emission scanning electron microscopy, and Fourier transform infrared spectroscopy (FTIR). The produced AgNPs were 685 nm in size, spherical in shape, polydispersed in nature, and exhibited a maximum absorbance at 416 nm. Escherichia coli and Staphylococcus were successfully combatted by the AgNPs.

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