Investigation of activation energy and antibacterial activity of CuO nano-rods prepared by Tilia Tomentosa (Ihlamur) leaves

Abstract

In recent years, fabrication of metal oxide nanoparticles is intensively gained interest of various chemists as well as biochemist due to their wide range of applications in different fields. Therefore, we reported an easy and eco-friendly synthesis of CuO nano-rods by using Tilia Tomentosa (Ihlamur) leaves extract. Producing CuO nanoparticles exhibiting rod like shape is rare and difficult using plant leaves; but it is possible using tilia leaves. The green synthesised CuO nano-rods were calcined at 400˚C for 15 minutes and were characterized by UV-Visible spectroscopy, XRD, SEM and particle size analyser to study their bandgap, phases, shape and sizes respectively. SEM studies reveal the formation of rod shaped CuO nanoparticles with average length of 95nm and that of breadth is 32nm. Further the thermal properties of CuO nano-rods were studied by using TG and DTA analysis. Thermal studies were carried out at 6, 8 and 10˚/min heating rates to study the enthalpy and activation energy in detail. The activation energy of CuO nano-rods were calculated by Kissinger method and was found to be 12.23 kJ/mol. Antibacterial  activity of CuO nano-rods are carried out using S. aureus, P. flourescens, E. faecalis, B. subtilis, S. enteridis and E. coli.