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Supraja S.,Rajalakshmi Engineering College | Mohammed A.S.,Rajalakshmi Engineering College | Chakravarthy N.,Rajalakshmi Engineering College | Jayaprakash Priya A.,ARMATS Biotek Private Ltd and 14 18 | And 4 more authors.
International Journal of ChemTech Research | Year: 2013

There is an increasing commercial demand for nanoparticles (NPs) due to their wide applicability in various areas. Metallic nanoparticles are traditionally synthesized by wet chemical synthesis techniques where the chemicals used are quite often toxic and flammable. Hence the development of reliable and eco-friendly processes for synthesis of metallic nanoparticles is an important step in the field of nanotechnology. Plant extracts are eco-friendly and thus can be an economic and efficient alternative for the large-scale synthesis of nanoparticles. In the present study, we used a novel approach to synthesize stable silver (Ag) NPs using Cynodon dactylon leaf extract and. observed a rapid reduction of silver ions leading to the formation of stable silver nanoparticles in solution when exposed to sun light compared to other modes of synthesis viz, microwave synthesis, microwave, UV, direct boiling and room temperature. The UV-Vis spectrum of Ag NP in aqueous solution shows an absorbance peak around 450 nm due to Surface plasmon resonance. Silver nanoparticles were confirmed with XRD which exhibited intense peak. Besides the above, the FTIR analysis showed the presence of difference functional groups invoved in capping the silver nanoparticles Again, silver nanoparticles size was confirmed by SEM analysis which shows that particles were in the range of 30 to 50 nm in size. This study, to the best of our knowledge, is the first attempt to perform eco-friendly synthesis of Ag NPs using Cynodon dactylon and sun light and produced the maximum yield which may benefit various industries with wide range of applications, including renewable clean energy, clean water, medical advances, cosmetics, food and food packaging, paints, coatings, information, technologies and aerospace developments.

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