SYNTHESIS OF NiO–ZnO NANOPARTICLES BY PYROLYSIS OF Ni–ZIF–8 AND PHOTOCATALYTIC ACTIVITY UNDER SUNLIGHT

Abstract

This paper presents the study on the synthesis of NiO–ZnO semiconductor nanoparticles from Ni–ZIF–8. The Ni–ZIF–8 material prepared from 2–methyl imidazole and a solution containing Ni²⁺ and Zn²⁺ with an Ni²⁺/Zn²⁺ molar ratio of 8:2 has the crystallinity of ZIF–8 with the space. The p–n NiO–ZnO nanoparticles were prepared by the thermal treatment of Ni–ZIF–8 at 500 °C for 4 hours. The obtained semiconductors exhibit photocatalytic activity for the degradation of Remadazol Deep Black dye under sunlight with high efficiency.