期刊
JOURNAL OF EXPERIMENTAL NANOSCIENCE
卷 11, 期 6, 页码 445-458出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/17458080.2015.1077534
关键词
Callistemon lanceolatus; silver oxide nanoparticle; nanoparticle; antioxidant activity
This study describes a novel biological route for the biosynthesis of silver oxide nanoparticles utilising the aqueous extract of Callistemon lanceolatus D.C. leaves. Formation of silver oxide nanoparticles was confirmed by UV-visible spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscope-energy dispersive X-ray spectroscopy and X-ray diffraction spectroscopy analysis. The biologically synthesised silver oxide nanoparticles were found to be 3-30 nm in size with spherical and hexagonal shape by high-resolution transmission electron microscope analysis. Furthermore, the biogenic silver oxide nanoparticles demonstrated significant (p < 0.05) dose-dependent antioxidant activity in various in vitro antioxidant methods. These particles also exhibited significant (p < 0.05) dose-dependent and time-dependent cytotoxic activity towards brine shrimp nauplii. Moreover, the reported method is a simple, cost-effective and eco-friendly approach for the synthesis of silver oxide nanoparticles with useful pharmacological properties.
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