National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Plant mediated synthesis or green synthesis of nanoparticles is gaining importance due to its simplicity, eco-friendly nature, rapid rate of synthesis, less cost and due to the disadvantages associated with chemical synthesis. The bio-active molecules present in the plant extracts are utilized for the synthesis of zinc oxide nanoparticles from its bulk molecules. A study was carried out to synthesis zinc oxide nanoparticles from neem (Azadirachta indica) and tulasi (Ocimum tenuiflorum) leaf extracts. The preliminary confirmation of synthesized nanoparticles was done by UV-spectroscopy where the absorbance peaks of synthesized zinc oxide nanoparticles were obtained in UV wavelength range (359 and 364 nm for neem and tulasi, respectively). The synthesized particles were characterized for their size and morphology using particle size analyzer and scanning electron microscopy. The average size (diameter) of neem and tulasi synthesized zinc oxide nanoparticles were recorded as 101.6 and 122.4 nm, respectively in particle size analyzer (PSA). In scanning electron microcopy (SEM), ZnO nanoparticles synthesized from neem recorded flakes like or flower like morphology and size ranged from 100-300 nm. For ZnO NPs synthesized from tulasi leaf extract recorded ovoid shape and size ranged from 70-400 nm. Energy dispersive x-ray analysis (EDAX) of green synthesized ZnO nanoparticles was done to determine its purity and chemical composition.
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