Green Synthesis, Characterization & Antibacterial Studies of Silver (Ag) and Zinc Oxide (Zno) Nanoparticles

Abstract

Green synthesis nanoparticles were considered as an alternative effective resource instead of chemically engineered metal oxide nanoparticles. Using leaf extracts for green synthesis, essential for the reduction and oxidation process of the metals. Phyllanthus niruri (L.) and Aristolochia indica (L.) leaf extracts were used to synthesize yellowish brown coloured silver (Ag) and white coloured zinc oxide (ZnO) nanoparticles. Synthesized green nanoparticles characterized by different spectroscopic analysis (XRD, XPS, FTIR, PL) and TEM. Characterization results confirmed the particles morphology, size, structure and also their optical and photonic properties. Three different concentrations of Ag and ZnO NPs were analysed against three (gram positive) and five (gram negative) bacteria. Increased levels of green synthesized Ag and ZnO NPs showed increased zone of inhibition than amoxicillin (positive control). Our study proved that the green synthesized Ag and ZnO NPs showed similar unique physical and chemical properties with metal oxide nanoparticles but less toxic while their discharge into the ecosystem.

Olive Performance under the Soil Application of Humic Acid and the Spraying of Titanium and Zinc Nanoparticles under Soil Salinity Stress

“…Since Zn is necessary for the production of protein, chlorophyll, and indole acetic acid as well as for maintaining the integrity of the cell membrane by preventing the plant from absorbing too much Na+ and Cl, the exo spraying of ZnO 2 NPs enhanced the growth and physiological parameters of the plants under NaCl stress [55]. ZnO 2 NPs also play a crucial role in enhancing chlorophyll formation and photosynthetic activity [56,57] and mitigating salt stress in plants [58]. Moreover, ZnO 2 NPs are involved in improving the growth attributes, photosynthesis, yield, biomass production, nutrient uptake efficacy, sugar, and total nitrogen in numerous crops [23,59].…”