Nickel Oxide Nanocrystalline Fabricated Under Gamma Irradiation and Its Photocatalytic Investigation for Textile Azo Dye Degradation
Auteur(s): Muswema Lunguya Jérémie, Ekoko Bakambo Gracien, Lobo Kanza-Kanza Joseph, Mvele Muamba Omer, Nzazi Kambamba Nicole, Nduku Mafwa Fabrice, Musengele Bilasi Denis, Ndongazadi Tresor, Mukiatom Perbon, Mata Niasa GérardNom de la revue/Journal: Advances in Materials
Mois: août
Volume: 8
Numéro: 3
Année: 2019
pages: 112-119
Résumé
<p>Gamma irradiation technique has been applied to produce non-stoichiometric nickel oxide nanoparticles (of approximately 23 nm) from gels prepared at pH about 8.2. Characterization techniques so far discussed in this investigation revealed that the sol product prepared before irradiation corresponded to Ni(OH)2, which was transformed under gamma<br>irradiation to NiO. The present investigation has proven the efficiency of gamma rays in inducing changes in structure and morphology of the sols prepared before irradiation. The synthesised NiO nanoparticle was found to be an efficient photocatalyst for degradation of acid red G under UV light irradiation. And, finally the radiolytic mechanism production of NiO nanoparticles in aerated solutions is suggested according to the experimental result.</p>