Recently, nanoparticle (NP) synthesis has evolved into a green nanotechnology field, requiring more methods for the eco-synthesis of nanoparticles due to the high costs of other chemical–physical methods. Among the most commonly used nanomaterials, NiO-NPs are highly valuable due to their specific, thermal, optical, and electronic features. Thus, the main objective of this work was to investigate the green synthesis of NiO-NPs employing the Phoenix dactylifera L., extract, which is rich in phytochemicals, as a reducing agent. In this way, the effect of the concentration of nickel oxide nanoparticle as an efficient termiticidal was evaluated. The NPs were characterized and compared through Ultra Violet Visible Spectroscopy (UV) Additionally, we evaluated the antibacterial properties of these nanoparticles against Gram-positive Staphylococcus aureus (S. aureus), Bacillus cereus (B. cereus) and Shigella flexneri (S. flexneri) and Gram-negative Escherichia coli (E. coli) pathogenic strains. The results showed that NiO-NPs using a green reducing agent phoenix datylifera extract has shown an efficient termiticidal activity and greater antibacterial property against gram negative bacteria i.e. E.coli. In addition, this synthesis highlighted the termiticidal and antibacterial activities of these nanoparticles. In conclusion, this method could be a suitable substitute for typical toxic methods for the synthesis of metallic nanoparticles and its applications as an efficient termiticidal and antimicrobial materials.

Keywords: Anti-termite activity, Antibacterial activity, Green synthesis, Nickel oxide nanoparticles