Abstract
Cobalt oxide (Co3O4) is one of the favorable nanoparticles (NPs) that possesses many remarkable properties so that it can be used in medicine, chemistry, environment, energy, information, industry, and so on. In this study, the crystalline Co3O4 nanoparticles (NPs) were successfully prepared by an efficient conventional method technique from an using different fuels. In the present paper, pure phase and well-dispersed Co3O4 were synthesized via the starch and aqueous ammonia solution in the stoichiometric fuel compositions. The structure and morphology of by way of organized Co3O4 nanoparticles were characterized by the structural analysis, electron microscopy studies, and optical properties studies. Magnetic properties exposed that the Co3O4 nanoparticles had ferromagnetic performance at room temperature with saturation magnetization of 71.09emu/g. The results revealed that the changing the precursor led to great effects on the crystal size, emission peaks, and the reaction time of preparing the Co3O4 NPs. The significant feature of this manuscript is that the effects of different precursors on the structural magnetic and optical properties of Co3O4 NPs were investigated for the first time. The average particle size of samples (A and B) 23.6 and 22.2nm, respectively.
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