Phytosynthesis of Silver Nanoparticles using Andean Cabbage: Structural Characterization and its Application
2020
Abstract In this research article, we reported a clean and sustainable approach for the phytosynthesis of silver nanoparticles (AgNPs) by in situ reductions of Ag+ to Ag0 using an aqueous extract of Cabbage. The analytical characterizations using UV-vis spectroscopy, transmission electron microscopy, dynamic light scattering, and X-ray diffraction confirmed the successful synthesis of AgNPs. Spectroscopic and morphological studies revealed the formation of semi-crystalline, spherical AgNPs with size around 15–80 nm at λmax = 440 nm. The in vitro radical scavenging/ antioxidant property of as-synthesized AgNPs against DPPH· was enhanced with respect to Cabbage extract. The H2O2 sensing activity of AgNPs also found. Further, the obtained AgNPs show remarkable catalytic activity towards the reduction of 4-nitrophenol to 4-aminophenol in water. The catalytic conversion of 4-NP to 4-AP was studied in UV-vis spectroscopy. We concluded that the phytosynthesis of AgNPs by Cabbage extract is ecofriendly and have potential application as antioxidant, H2O2 sensor and nanocatalyst
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