Chemical and sweet basil leaf mediated synthesis of cerium oxide (CeO₂) nanoparticles: Antibacterial action toward human pathogens

Abstract

The current study explores the bacterial inactivation of CeO₂ nanoparticles (NPs) synthesized via chemical co-precipitation (C-CeO₂) and green synthesis (G-CeO₂) route. In the green synthesis route, the sweet basil leaf extract is used as a reducing agent while CTAB acts as a surfactant in the chemical route. The structural, surface, and optical properties were studied by different physico-chemical techniques. X-ray diffraction pattern of CeO₂ nanoparticles confirms face-centered cubic (FCC) crystal system. The crystallite size is reduced for the green synthesized CeO₂ nanoparticles. The surface analysis reveals the formation of small-sized CeO₂ nanoparticles with agglomeration. The antibacterial activity of C-CeO₂ and G-CeO₂ nanoparticles were analyzed against Staphylococcus aureus and Escherichia coli bacterial strains which showed their potential for bacterial cell death.

Graphical Abstract

Keywords:

• Cerium oxide nanoparticles
• XRD
• optical property
• scanning electron microscopy
• antibacterial

Disclosure statement

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