Antibacterial activity of Cu@Ag nanocomposites against water bacterial pollution | ||||
| Journal of Basic and Environmental Sciences | ||||
| Volume 4, Issue 1, January 2017, Page 85-89 PDF (85.95 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jbes.2017.369626 | ||||
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| Authors | ||||
| Ahmed M. Azzam1; Mahmoud M. Hazaa2; Ashraf M. El Saeed3; Mai A. Abdel-Naem2 | ||||
| 1Environmental Researches Department, Theoder Bilharz Research Institute, Egypt | ||||
| 2Microbiology Department, Faculty of Science, Banha University, Egypt. | ||||
| 3Petroleum Application Department, Egyptian Petroleum Research Institute, Egypt. | ||||
| Abstract | ||||
| Nanomaterials have a great potential in purifying water and wastewater treatment due to their tremendous antibacterial activity. In the present study, Cu@Ag nanocomposite (NC) was synthesized and characterized using scanning electron microscopy (SEM) and transmission electron microscope. The antibacterial activity of Cu@Ag NC was tested against water Gram-positive bacteria (Staphylococcus sp.) and Gram-negative one (Escherichia coli) using well diffusion method and minimum inhibition concentration (MIC). Transmission electron microscopy images of fabricated Cu@Ag NC showed that particles are spherical and with average diameter ranged from 25-45 nm. The highest inhibition zones for E. coli and Staphylococcus sp. were 25.6±1.6 and 28.3±1.6 mm, respectively at 0.4 mg/ml of Cu@Ag NC. The MIC concentrations for E. coli and Staphylococcus sp. were 21±2.2 and 16±1.4 µg/ml, respectively. So, the Cu@Ag NC was more effective for Gram-positive bacteria than Gram-negative one. Accordingly, the Cu@Ag NC could be suggested as an effective antibacterial agent for treatment of water bacterial pollution. | ||||
| Keywords | ||||
| Nanocomposites; Cu@Ag; antibacterial; nanoparticles; water pollution; bacteria | ||||
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