Monday , 10 May 2021

Green Synthesis of Zinc Nanoparticles using Punica granatum Fruit Extract and their Structural and Optical Properties

R. Rajakumari*1, 1S. Kalaiarasi, 2L.Parimala
1PG and Research Department of Physics, Queen Mary’s College (Autonomous), Chennai, Tamil Nadu, India
2Annai Violet College of Arts & Science, Chennai, Tamil Nadu, India

The Zinc nanoparticles were prepared with the fruit extract of Punica granatum via green synthesis. Though physical and chemical methods are more popular for nanoparticle synthesis, the biogenic production is a better option due to eco-friendliness. The structural and optical properties of the synthesized sample were characterized by XRD, UV-absorption, Photoluminescence (PL) and FTIR analysis. XRD analysis put forward that the particles were crystalline in nature. The  UV- visible analysis showed band around 256.5 – 276 nm which was identified as “surface Plasmon resonance band” and this band is ascribed to excitation of valence electrons of Zn arranged in the nanoparticles (nanocrystal /nanosphere). The PL spectrum showed green emission of the synthesized sample. FTIR analysis identified the possible functional groups in biomolecules responsible for the reduction of Zn2+ and capping agent of bioreduced Zn nanoparticles through particular bond vibrations peaks coming at defined wave numbers.
Keywords: Green synthesis, Zn nanoparticles, Punica granatum

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