An Investigation On Green Synthesis, Optimization And Characterization Of Zinc Oxide Nanoparticles Using Rhizomes Extract Of Curcuma longa And Evaluation Of Their Phytotoxicity

摘要

The aim of the present investigation is biosynthesis, characterization and optimization for production of Curcuma longa rhizome mediated zinc oxide nanoparticles using different parameters and evaluation of their phytotoxicity (seed germination, shoot and root formation) on Sesamum indicum. The biosynthesized Zn-oxide nanoparticles are characterized by UV-visible spectroscopy, Fourier transform infrared spectroscopy (FTIR), x-ray diffractometer (XRD), Raman spectroscopy, scanning electron microscopy (SEM) with energy dispersive x-ray spectroscopy (EDX) and transmission electron microscopy (TEM). The functional group of capping agents in extract and met al oxide groups in nanoparticles are confirmed by the FTIR spectrum. The XRD is helpful to analyse the nature of nanoparticles. The synthesized Zn-oxide nanoparticles are spherical with an average size of 25 nm. The treatment (1 mg/IOOmL synthesized Zn-oxide nanoparticles) shows significant seed germination, shoot and root formation when compared to other treatments (different concentrations). The lowest percentage of seed germination, shoot and root formation are observed in treatment with 4 mg/100mL synthesized Zn-oxide nanoparticles. This study concludes that the high concentration of Zn-oxide nanoparticles causes toxicity in plants.