| 초록 |
Nanoflowers are a newly developed class of nanoparticles showing structure resembling a snowflake or flower. In this study, dendritic snowflake-like silver nanoflowers (AgNFs) was obtained by a one-step green synthesis using Moringa oleifera leaf extract as reducing, capping, and stabilizing agent. The formation of AgNFs was visually observed by color change of the solution and was confirmed by the presence of absorbance peak at 416 nm. Fourier transform infrared (FTIR) analysis showed that silver nanoflowers were functionalized with Moringa oleifera leaf phytochemicals. The prepared nanoflowers were further characterized by Transmission electron microscopy (TEM), X-ray spectroscopy diffraction, and energy dispersive spectroscopy. The TEM results showed that synthesized nanoflowers have an average size of ~282 nm with a petal thickness of 120 nm. The results of X-ray diffraction confirmed the crystallinity of silver nanoflakes synthesized using Moringa oleifera leaf. The silver nanoflowers showed antibacterial activities against both gram-negative bacteria Escherichia coli and gram-positive bacteria Staphylococcus aureus. |
