科研之友
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摘要
Green synthesis of metallic nanoparticles is gaining momentum in the field of nano-research because it is a single-step, fast, low cost and eco-friendly alternative to well known physical and chemical procedures that involve costly instruments or hazardous by products at the end. Here, we report a single-step, novel and cost-effective biosynthesis of silver nanoparticles from silver salt using leaf extract of celery (Apium graveolens). Silver nanoparticle formation was studied at regular intervals by UV-Vis spectroscopy. The crystallinity and phases were characterized by X-ray diffraction (XRD) analysis. Transmission electron microscopy (TEM) was performed to determine the size, shape and morphology of the nanoparticles. Fourier transform infra-red (FTIR) spectroscopy was done to detect the organic functional molecules that reduced the silver ions and capped the particles during interaction. Antifungal activity of these biogenic silver nanoparticles was studied against two pathogenic fungi-Aspergillus niger and Aspergillus wentii and these nanoparticles showed effective fungicidal property against the tested fungal strains.
- 出版日期2015-6
