Abstract
The catalytic, optical and thermal properties are based on the size of the nanoparticles. Nickel oxide nanoparticles have unique optical property and excellent antibacterial activity. The present study aims for the synthesis of Nickel oxide nanoparticles (NiO NPs) using Sterculia foetida (S. foetida) leaf extract as reducing agent by solution combustion method. The synthesized Nickel oxide nanoparticles (NiO NPs) were confirmed by UV-Visible spectroscopy (UV) with the peak at 370 nm and at the temperature of 450 ± 10 °C, Fourier transform infrared (FTIR) wavelength was observed at 1418 cm–1 1027 cm–1 shows C–O stretching vibration and at 507 cm–1 vibration of Ni–O bond found. Crystalline structure and the formation of monoclinic phase revealed by Powder X-ray diffraction (PXRD) pattern, the percentage of nickel and oxygen of NiO NPs were confirmed with EDAX analysis. The Scanning electron microscopy (SEM) and Transmission electron microscope (TEM) images indicate the shape of Nickel oxide nanoparticles (NiO NPs) with the size range of 10–51 nm. Staphylococcus aureus (S. aureus) (Gram positive) and Escherichia coli (E. coli) (Gram negative) bacteria's were taken to study about antibacterial activity against the green synthesized Nickel oxide nanoparticles (NiO NPs). The Nickel oxide nanoparticles have pharmaceutical and other biomedical applications.
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