Green synthesis of Copper oxide and Cobalt oxide nanoparticles using Spinacia Oleracea leaf extract

The investigation aims at the synthesis of copper oxide and cobalt oxide nanoparticles using Spinacia Oleracea leaf extract. The Spinacia Oleracea leaf extract behaves as a reducing agent in the nanoparticle synthesis. Plant extract was first prepared and then treated with copper and cobalt salt solutions to get the precipitate. The salt solutions used for this purpose are copper sulphate pentahydrate (CuSO4.5H2O) and cobalt chloride hexahydrate (CoCl2.6H2O). The UV-Vis, XRD, EDX and SEM techniques are used to find optical, structural and morphological properties of copper oxide and cobalt oxide nanoparticles. The average crystallite size of copper oxide nanoparticles is 44 nm and have a hexapod structure. The UV absorption peaks are at 326 nm and 506 nm for copper oxide and cobalt oxide nanoparticles.