Gamma-radiation induced synthesis of spinel Co3O4 nanoparticles

Abstract

Gamma irradiation method has been applied to produce paramagnetic spherically shaped single crystals tricobalt tetraoxide (Co 3 O 4) nanoparticles from cobalt oxyhydroxide sols, in alkaline medium pH ~ 12. The present investigation has proven the efficiency of gamma rays in inducing changes in structure and morphology of the sols prepared before irradiation. Characterization techniques so far discussed in this study revealed that the sol product prepared before irradiation corresponded to the standard cobalt(III) oxyhydroxide, CoO(OH) , which, under gamma irradiation, was transformed to tricobalt tetraoxide, Co 3 O 4 , with an average particle size of ~ 30-45 nm.

Role of hydroxyl radical scavenger agents in preparing silver nanoparticles under γ-irradiation

“…In our previous works, γ-irradiation method has been applied to fabricate iron oxides of different morphologies by controlling the pH [6,7,17] and the spinel Co 3 O 4 nanoparticles [18]. We did apply the same technique to successfully prepare zinc sulfide nanocrystalline in a non-aqueous system [8] and the nanocomposite (Cd x Zn 1−x ) S [19].…”

Nickel Oxide Nanocrystalline Fabricated Under Gamma Irradiation and Its Photocatalytic Investigation for Textile Azo Dye Degradation

“…In our previous works, γ-irradiation method has been applied to produce magnetic Fe 3 O 4 nanorod particles, and spinel Co 3 O 4 nanoparticles [29][30][31].…”