Synthesis of hexagonal nanozinc by arc discharge for antibacterial water treatment

Abstract

The arc discharge technique with some modifications was carried out to synthesize a high percentage of metallic zinc (Zn) nanoparticles (ZnNPs) with a high degree of structural perfection. The antibacterial potentials of the synthesized ZnNPs against common waterborne bacterial pathogens were compared as a more applicable disinfection method than conventional ones. The obtained characteristics (X-ray diffraction, energy-dispersive X-ray spectroscopy and transmission electron microscopy) of the prepared ZnNPs indicated their perfect hexagonal surface shape and the high purity of the zinc metal. Moreover, the prepared nanoparticles showed significant bacteriostatic and bactericidal effect against the various tested bacteria. The findings of this study support the use of ZnNPs as a strong antibacterial agent in water desalination plants and manufacturing of water filters. Moreover, the findings suggest the use of the arc discharge technique for preparing more effective nanometals with different shapes and high purity.