synthesis and characterization of cobalt oxide nanoparticles using momordica charantia and its photocatalytic activity

Synthesizing plant-derived nanoparticles attract attention due to both their broad spectrum biological applications and sustainable production. this paper describes the production of cobalt oxide nanoparticles (co3o4 nps) using m. charantia leaf extract. the uv–vis absorption spectrum of them has peaks at 309 and 595nm. ftir spectroscopy reveals bands at 580cm-1 and 667cm-1 and confirms the formation of co3o4. the particle size was determined by xrd to be between 44.68 and 89.20nm. the field emission scanning electron microscopy (fesem) showed that co3o4 nps were irregular in shape and between 40 and 90nm in size. further, the dye degrading capacity of this nanoparticle was ascertained. the dye degrading capacity of co3o4 nps exhibited was 81.50% obtained at 90 minutes of light irradiation.