Plant-mediated synthesis of zinc oxide nanoparticles using Costus pictus D. leaf extract and its physio-chemical properties

Abstract

Plant-mediated method of nanoparticle synthesis has many advantages over conventional methods including the elimination of chemical reductants that makes it eco-friendly and cost-effective technique and the synthesized nanoparticles has tremendous scope for packaging, cosmetics, biomedical and agricultural applications. The bioactives and secondary metabolites present in the leaf extracts involve in redox reactions to synthesize ZnO nanoparticles from its bulk counterpart. In this study we have attempted to synthesize zinc oxide nanoparticles using leaf extract of Costus pictus D. which is commonly known as insulin plant. The synthesized zinc oxide nanoparticles were characterized for various physio-chemical properties using UV-Vis Spectroscopy, FTIR, TEM, EDAX, Dynamic light scattering and Zeta potential. The particle size analysis revealed that the ZnO-NPs formed was distributed between 50-130 nm and a sharp absorption peak at 301 nm was detected in the UV-vis region that corresponds to an optical band gap of ZnO NPs. TEM shows that the ZnO-NPs exhibit a nearhexagonal shape.

TRY 4: A high yielding, mid early sodicity tolerant rice variety suited to Tamil Nadu

“…Scanning Electron Microscope (SEM) with energy dispersive X-ray spectroscopy (EDAX) was used to evaluate the texture, morphology and elemental composition of fresh fly ash, ash from dumpsite and sediment (Jeyageetha and Kumar, 2016).The elemental composition of green synthesized nanoparticles in Costus pictus leaves was determined using EDAX (Ravendran et al, 2021). Hithertoo, EDAX under SEM confirmed that, there was a lesser transport of sodium ions and higher transport of potassium ions from root to shoot in this culture, TR05031 (Fig.…”