One-pot synthesis of NiO nanorods- like hierarchical microspheres as electrode material for electrochemical performance

International Conference and Exhibition on Materials Chemistry

March 31-April 01, 2016 Valencia, Spain

K Kaviyarasua, E Manikandan, J Kennedy, M Jayachandran, R Ladchumananandasiivam, U Umbelino De Gomes and M Maaza

iThemba LABS-National Research Foundation, South Africa
University of South Africa, South Africa
Bharath University, India
National Isotope Centre, New Zealand
CSIR-Central Electrochemical Research Institute, India
Federal U

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

We report the effect of calcination on the structural and optical properties of nanocrystalline NiO nanoparticles. A novel sol-gel technique was used to prepare the NiO nanorods at room temperature (RT). These were successfully synthesized by virtue of a single source precursor method at mild reaction conditions between nickel nitrate and sodium hydroxide. omposition, structure and morphology of the products were analyzed and characterized by X-ray powder diffraction (XRD). The ultra-violet visible (UVvis) absorption peaks of NiO exhibited a large blue shift and the luminescent spectra had a strong and broad emission band centered at 328 nm. The intense band gap was also observed, with some spectral tuning, to give a range of absorption energies from 2.60 to 3.41 eV. The various functional groups present in the NiO nanorods were identified by FTIR analysis. High resolution transmission electron microscopy (HRTEM) and the chemical composition of the samples the valence states of elements were determined by X-ray photoelectron spectroscopy (XPS) in detail. The electrochemical response of NiO proved that the nano-nickel has a high level of functionality due to its small size and higher electrochemical activity without any modifications. The above studies demonstrate the potential for the utilization of NiO nanoparticles as a promising material for opto-electronics applications.

Biography :

Email: kaviyarasuloyolacollege@gmail.com