Nanocomposites and nanomaterials

Green synthesis of silver nanoparticles and composite materials for drinking water disinfection
Skiba M.I.1, Vorobyova V.I.2
1 Ukrainian State University of Chemical Technology, 
Gagarinа ave. 8, Dnipro 49005, Ukraine
E-mail: Margaritaskiba88@gmail.com
2National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Peremohy ave. 37, Kyiv 03056, Ukraine

Silver nanoparticles (AgNPs) represent one of the most extensively studied nanomaterials. One of the innovative and environmentally safe methods for preparation of nano-sized compounds is the use of green synthesis [1,2]. In this study we report the potential use of food waste such as grape skin, stalk and seeds obtained after grape processing to produce silver nanoparticles (AgNP). Results from the present work establish that AgNP were synthesized in a single step method at room temperature using water extract of grape skin obtained by plasma extraction. The growth of AgNP was within 30 min and was found to be highly stabilized. Thus produced AgNP were characterized using transmission electron microscopy (TEM), X-ray diffraction (XRD), ultraviolet–visible (UV–Vis) absorption spectroscopy. The mean particle size for the green synthesized AgNPs from grape waste ranged from 20 to 50 nm. The effect of reaction conditions such as the concentration of silver ions and characteristics of extract on the synthesis of AgNPs was studied. Silver nanoparticles-alginate composite beads were synthesized as filler materials of packed columns for drinking water disinfection. 

1.	Abdelghany, T.M., Al-Rajhi, A.M.H., Al Abboud, M.A. et al. Recent Advances in Green Synthesis of Silver Nanoparticles and Their Applications: About Future Directions. A Review // BioNanoSci. – 2018. – 8. Р. 5-16. 
2.	Saratale, R.G., Saratale, G.D., Shin, H.S. et al. New insights on the green synthesis of metallic nanoparticles using plant and waste biomaterials: current knowledge, their agricultural and environmental applications // Environ Sci Pollut Res. – 2018. – 25. – Р.10164-10183.