Efficient Synthesis of NIO Nanoparticles usin...

Efficient Synthesis of NIO Nanoparticles using Simple Chemical Technique

Author Name : M. Haripriya, Dr. Upama Misra

ABSTRACT Nanoparticles of nickel oxide (NiO) were synthesized and thoroughly characterized in this work. The dispersion solvent used was double-distilled water, and the precursors were nickel chloride hexahydrate (NiCl2•6H2O) and sodium hydroxide (NaOH). The synthesis method included pH adjustment, magnetic stirring, gel formation, and thermal processing. This included drying at 60°C and calcination at 500°C. A color change from green to black was observed, suggesting the creation of NiO. The impact of heat treatment was highlighted by morphological examination using scanning electron microscopy (SEM), which showed spherical nanoparticles with an average size of 24 nm, and atomic force microscopy (AFM), which verified a greater pre-calcination size of 56 nm. The crystallinity index, which was calculated using SEM and XRD data, was found to be 0.9, suggesting that the material mostly exhibits monocrystalline characteristics. UV-Vis spectroscopy confirmed the optical properties of the nanoparticles that were calcined. The effective production of pure NiO nanoparticles was confirmed by Fourier-transform infrared (FTIR) spectroscopy, which found critical vibrational modes related to Ni-O and NiO-H bonds. This paper presents a method for efficiently synthesizing NiO nanoparticles that have promising uses in many different industries.