Preparation Doped CuO Thin Film and Studies of Its Antibacterial Activity

A. Mustafa, M. Sadeer, S. Duha Department of Applied Science, University of Technology, Baghdad, Iraq

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In this work, Mn doped CuO thin films were prepared by using spray pyrolysis method. Different volume ratios of Mn (0%, 2%, and 4%) were used to dope CuO in order to form Mn-CuO thin films. These films were annealed in furnace at temperature 400° for 3 h. The characteristics and structure of films were then examined using X-ray diffractometry and scanning electron microscopy analysis. The X-ray diffractometry pattern showed that all films were polycrystalline having anatase phase only, and the films with different doping ratio exhibited characteristic peaks of anatase crystal planes (̅111) and (111) at 35.6° and 38.73° direction, respectively. The scanning electron microscopy observation of the CuO film doped with 2% Mn revealed a smoother surface compared to the other prepared films. The antibacterial properties of Mn doped CuO thin films showed the reduction in growth of E. coli and S. aureusf which increased significantly at high concentration of Mn doping level (2% and 4%, respectively) as compared with undoped CuO with 0% concentration of Mn thin films.

DOI:10.12693/APhysPolA.135.596 topics: spray pyrolysis method, CuO, antibacterial properties of CuO