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A study on the bactericidal properties of Cu-coated carbon nanotubes |
| LIU Tong1, TANG Huiqin1, ZHAO Jie1, LI Dejun1, LI Ruying2, SUN Xueliang2 |
| 1.College of Physics and Electronic Information Science, Tianjin Normal University, Tianjin 300074, China; 2.Department of Mechanical and Materials Engineering, University of Western Ontario, Ont. N6A 3K7, Canada |
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Abstract A Cu layer was coated on carbon nanotubes (CNTs) by ion beam-assisted deposition (IBAD). Standard agar dilution method was used to evaluate the bactericidal rate against E. coli and S. aureus bacteria. The structure and chemical states of the Cu-coated CNTs were investigated by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The results show that the Cu-coated CNTs possess a very high bactericidal rate. In comparison with the Cu-coated pyrolytic carbon sample, the Cu-coated CNTs show much stronger bactericidal property.
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Issue Date: 05 June 2007
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