Biosynthesis of Zinc Oxide Nanoparticles using Fermented Table Olive Extract: A Novel and Green Approach with Potential Applications

Photoluminescence and antibacterial performance of sol–gel synthesized ZnO nanoparticles

“…Conversely, gram-negative bacteria have an additional external membrane which contains lipopolysaccharides, proteins and a thin layer of peptidoglycan. 24,26,45–47 It is difficult to damage the cells by the attack of the ZnO nanoparticles when they interact on the bacteria due to the external membrane in gram-negative bacteria. Antibacterial activity indications for the ZnO nanoparticles show that the crystalline ZnO NPs are more effective and better against gram-positive bacteria compared to gram-negative ones.…”

Green Synthesis, Characterization, and Antifungal Efficiency of Biogenic Iron Oxide Nanoparticles

“…In this context, the hydrodynamic diameter was ascertained to be 312.6 nm (Figure 9), indicating a greater magnitude in comparison to the measurements acquired via TEM and XRD methodologies. The observed difference may be ascribed to the inclusion of the size estimate for the biogenic IONPs nanoparticles, together with the consideration of capping biomolecules and the surrounding hydrate layers in the DLS analysis [62]. Moreover, the zeta potential value of the phytosynthesized IONPs was detected to be −11.6 mV (Figure 10).…”