Cu-doped ZnO-nanoparticles as a novel eco-friendly insecticide for controlling Spodoptera littoralis

Abstract

The objective of this study was to explore the potential of ZnO-nanoparticles (NPs) and Cu-doped ZnO-nanoparticles (NPs) as insecticides for controlling the population of Spodoptera littoralis, a major pest in Egyptian fields. The researchers employed various characterization techniques like zeta potential, XRD, Fourier-transform infrared spectroscopy (FTIR) spectroscopy, scanning electron microscopy, and transmission electron microscopy to analyze and identify the nanomaterials used. The study investigated the effects of different concentrations of nanomaterials, ranging from 1 % to 5 %. The results revealed that the presence of Cu-doped ZnO-NPs led to a significant reduction in the pest population compared to the control group. Notably, the highest concentration of 5 % Cu-doped ZnO-NPs exhibited a toxic effect on Spodoptera littoralis, resulting in a remarkable 95 % reduction in their population after 16 days of treatment. Additionally, the findings demonstrate that Cu-doped ZnO-NPs have effective insecticidal properties and are cost-effective, making them a viable option for local application in pest control. Finally, the research highlights the potential of Cu-doped ZnO-NPs as an environmentally safe and efficient insecticide against Spodoptera littoralis in Egyptian fields. The study emphasizes the utility of nanomaterials in pest management, which could significantly reduce the reliance on conventional insecticides, mitigating potential environmental and health risks.