Fabrication of the novel CoS₂/ZnO nanocomposites with photocatalysis properties and response surface methodology study

ABSTRACT

A novel of ZnO and CoS₂/ZnO nanomaterials were prosperously synthesised by using the wet chemical-ultrasonic method. The optical and morphological properties of the synthesized nanomaterials were characterised by X-ray diffraction, UV-Vis diffuse reflectance spectroscopy, surface-active area and field emission scanning electron microscopy. The average diameters of ZnO and CoS₂/ZnO were distinguished to be 39.19 and 50.73 nm, respectively. The photocatalysis proficiency were investigated by using the degradation of rhodamine B under ultraviolet light irradiation. Results depicted that CoS₂/ZnO nanocomposites illustrated a great photo-degradation efficiency (99.36% in 60 min) than the other nanomaterials. The photocatalysis process was optimised via the response surface methodology and Box–Behnken design. The prepared photocatalyst can be preserved a stable degradation proficiency for 5^thcycle times.

KEYWORDS:

• ZnO
• CoS₂
• photo-degradation
• response surface methodology

Acknowledgments

The researchers are thanking for the patronage of this project by the Islamic Azad University of Central Tehran Branch.

Disclosure statement

No potential conflict of interest was reported by the author(s).