Abstract
Peanut shell extract mediated synthesis of silver nanoparticles (AgNPs), their characterization compared to commercial AgNPs, and the antifungal activity of synthesized and commercial AgNPs were studied. Ultraviolet–Visible spectra (450nm), X-ray diffraction peaks (2θ=39.26, 45.54, 65.12, and 79.21), and Fourier transform infrared spectroscopy confirmed that both AgNPs were similar. High resolution-transmission electron microscopy showed that both the nanoparticles were mostly spherical and oval in shape, with an average particle size of 10 to 50nm. Both the AgNPs (30μg) showed a 5 to 6mm zone of inhibition against the agricultural fungal pathogens Phytophthora infestans and Phytophthora capsici.
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