solid state process for preparation of nickel oxide nanoparticles: characterization and optical study

In the present work, we report preparation of nio nanoparticles with well-defined plate morphology by solid-state reaction of nicl2∙6h2o and the schiff base ligand n,n′-bis-(3- methoxysalicylidene)benzene-1,4-diamine), as a novel precursor via solid state thermal decomposition method. this method is a simple and environmentally friendly for preparing transition metal oxides. the result of tga analysis of the precursor showed that the proper calcinations temperature is 450 °c. the nio product was characterized by xrd, ft-ir and uv-vis spectroscopy, sem and tem. the results indicated that the obtained product is face-centered cubic of nickel oxide, plate shape with average particle size of 10-20 nm. the optical absorption band gap of the nickel oxide nanoparticles was estimated to be 2.1 ev.