Structural characterization and magnetic Behaviour of nickel oxide nanoparticles synthesized using greener route

Mariappan, Ramalakshmi and Shakkthivel, Ranesh Jagadev (2025) Structural characterization and magnetic Behaviour of nickel oxide nanoparticles synthesized using greener route. World Journal of Advanced Research and Reviews, 26 (2). pp. 4489-4496. ISSN 2581-9615

NiO nanoparticles were synthesized by a two-step approach using a small amount of ionic liquid [Bmim][TfO] was found to be an effective stabilizing agent. The thermal, structural, morphological and magnetic characterization of the resulting samples were investigated by means of Thermogravimetry (TGA), X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Field emission scanning electron microscopy (FE-SEM), Transmission electron microscopy (TEM) and Vibrating sample magnetometer (VSM) analysis and the results indicate that the hexagonal β-Ni(OH)2 upon calcination at 400ºC to form cubic NiO nanoparticles and are superparamagnetic in nature. We believe that this method can be developed into a general way to synthesize other metal oxide nanoparticles on a large scale.