Antibacterial activity of CuO - cellulose nano rods depends on anew green synthesis (cotton)

Abstract

In this study CuO nano sheets were prepared using the cellulose extracted from green synthesis (cotton) as a novel me project. Structural properties were examined using X-Ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), and Ultra Violet (UV-Vis). The optimum copper oxide peak was at 2 theta 〖35.44〗^°corresponding to (1 ̅11) while for the cellulose was 〖22.8〗^°corresponds to (002). FESEM images of CuO nano sheets were relatively homogenous with diameters less than 30 nm. The UV-Vis for CuO-cellulose nano rods was observed at 350-360 nm, which is higher than of pure CuO nano sheet. The energy band gaps were 3.20 eV and 3.30 eV of CuO and CuO-CNR respectively. Finally antimicrobial activities of samples have been investigated against the Gram positive (pneumonia) and gram-negative (pseudomonas). The maximum antibacterial activities against the Gram positive (pneumonia) of CuO nano sheet and of CuO- cellulose nano rods are 16 mm and 19 mm respectively. The maximum antibacterial activities against the Gram negative (pseudomonas) of CuO nano sheet and of CuO- cellulose nano rods are 30 mm and 33 mm.