摘要：In this investigation, zinc oxide (ZnO) and copper oxide (CuO) nanoparticles (NPs) were syn-_ thesized using Punica granatum peel extract in one step reaction under room conditions, as well as magnesium hydride (MgHNP) and magnesium oxide (MgONPs), ZnO NPS were characterized by Fourier Transforms Infrared Spectroscopy (FT-IR), X-Ray Diffraction (XRD), Ultra-Violet Visible Spectroscopy (UV-vis) and Scanning Electron Microscopy (SEM). The UV-vis absorption spec- trum showed an absorption band at 278 nm due to ZnO nanoparticles. XRD characterized the final product as highly crystalline ZnO with sizes in the range of 10-40 nm. The SEM results revealed a presence of network of randomly oriented ZnO nano platelets with an average size of 40 nm and thicknesses of about 8 nm. This study determined the physiological effect of the synthesized four nanomaterials in green pepper plants. Residues of sprayed concentrations of the nanomaterials on pepper fruits were zero or about zero. Nanomateri-i als on leaves could be useful due to their conver-_ sion to act as fertilizer. Foliar sprayed with CuONPs, ZnONPs, MgHNPs and MgONPs were found to increase the chlorophyll content when using a proper concentration on pepper’s leaves compared to control, as well as increasing the p1ant’s height and leaves growth.
