• Basudeb Haldar
• Koyel Mallick Haldar

Emulsions of Silver nanoparticles (Ag NPs) were synthesized using a facile, single step, and completely green biosynthetic method employing aqueous leaf and fruit extracts of Putranjiva (Drypetes roxburgii) as both the reducing as well as capping agent. The kinetics of nanoparticle formation was also monitored by Ultraviolet–Visible (UV–Vis) spectrophotometric study. Aqueous leaf extract of Putranjiva can reduce silver ions more rapidly than aqueous fruit extract, leading to the formation of highly crystalline nanoemulsion of silver. With varying synthetic conditions like extract concentrations or precursor concentrations, the shape and sizes of the Ag NPs varies. The morphology and crystalline phase of the NPs were determined from High Resolution Transmission Electron Microscopy (HR-TEM), Energy Dispersive X-ray (EDX) analysis, X-ray Diffraction (XRD) analyses. The various phytochemicals present within the Putranjiva plant parts result in effective reduction of silver precursor to nanocrystal. In addition to that, the chemical frameworks of these biogenic molecules are also effective at wrapping around the NPs to provide excellent robustness against agglomeration. Fourier Transform Infra-Red spectroscopic (FTIR) analysis was performed to gather information about the chemical framework. A rigorous study has been performed for procedure optimization by varying different parameters to get most effective stable nanoparticle synthetic protocol.

Silver nanoemulsion, Biogenic synthesis, Putranjiva, Protocol optimization

"Facile Production of Crystalline Silver Nanoemulsion using Aqueous Extracts of Putranjiva (Drypetes Roxburgii): Synthetic Protocol Optimization through Precursor, Extract Concentration and Temperature Variation Study", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.208-216, May-2019, Available :http://www.jetir.org/papers/JETIR1905832.pdf

"Facile Production of Crystalline Silver Nanoemulsion using Aqueous Extracts of Putranjiva (Drypetes Roxburgii): Synthetic Protocol Optimization through Precursor, Extract Concentration and Temperature Variation Study", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp208-216, May-2019, Available at : http://www.jetir.org/papers/JETIR1905832.pdf