Synthesis and Characterisation of Titanium Dioxide and Zinc Oxide Nanoparticle

Abstract

Metal nanoparticles have been intensively studied within the past decade. Nanosized materials have been an important subject in applied sciences and engineering. Zinc oxide and Titanium oxide nanoparticles have received considerable attention due to their unique antibacterial, antifungal, and UV filtering properties, high catalytic and photochemical activity. In present work, ZnO and TiO2 nanoparticles were synthesized and characterized. The TiO2 nano particles were prepared according to the Co-precipitation method by hydrolysis and condensation of titanium tetraisopropoxide in absolute ethanol. ZnO nanoparticles were generated by thermal decomposition of a binuclear zinc (II) curcumin complex as single source precursor Zinc acetate dehydrate and triethnolamine (TEA) were used as the precursor materials. The as-synthesized TiO2 and ZnO particles were characterized by Particle size analyser and UV Visible Spectroscopy. The pariticle size of ZnO nanoparticle is 340 nm and TiO2 nanoparticle is 579 nm. The band-gap energy (Eg) was determined based on numerical derivative of the optical absorption coefficient by using UV-visible spectroscopy. The band gap is found to be 3.17eV & 3.18eV for the ZnO nanoparticles and TiO2. Thus, from the value of band gap obtained is 3.17eV and 3.18eV respectively.