Investigation of the Effect of Cu Impurity on the Antibacterial Potential of Cu-Doped ZnSe Nanoparticles Against Escherichia Coli and Pseudomonas Aeruginosa Gram Negative Bacteria

: in the present research, ZnSe:Cu nanoparticles with different Cu-dopant content were synthesized by aqueous method, and their antibacterial properties on two Escherichia coli and Pseudomonas aeruginosa gram negative bacteria were investigated. Results of XRD and UV- Visible spectroscopy, show the range of 1.94-2.14 for particles size and 3.50-3.65 eV for energy gap. To study the antibacterial properties, Escherichia coli and Pseudomonas bacteria were used as strain tests. Results of this research imply on that these nanoparticles have considerable antibacterial activity against the mentioned gram-negative bacteria, and have the usage ability in the field of antibacterial drugs. The highest antibacterial activity is devoted to the 1.5 Cu-doped nanoparticles on Escherichia coli. Also the undoped sample prepared under 6 min microwave irradiation had the highest antibacterial activity against the Pseudomonas aeruginosa.