期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 574, 期 -, 页码 818-828出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2016.09.077
关键词
nCu-MWCNTs; Hydrogen peroxide; E. coli; Antibacterial activity
资金
- National Natural Science Foundation of China [51478322, 51278351]
- Major National Water Pollution Control and Management Project [2014ZX07405-003]
- International Research Staff Exchange Scheme [PIRSES-GA-2012-318926]
This paper aims at the study on the antibacterial activity of nCu-MWCNTs combined with H2O2 against gram negative bacteria Escherichia coli (E. coil). The antibacterial ability of nCu-MWCNTs/H2O2 was evaluated by traditional surface plating method, fluorescence and SEM imaging, and the effects of variables (contacting time, dose of nCu-MWCNTs and dose of H2O2) were investigated. By comparing with other five processes including H2O2, MWCNTs, nCu-MWCNTs, MWCNTs/H2O2 and nCu/H2O2, nCu-MWCNTs and H2O2 was proved to have superlative antimicrobial effectiveness against E. coll. The role of nano-Cu, MWCNTs and H2O2 in the antimicrobial activity of nCu-MWCNTs/H2O2 was clarified. The release of copper ions and formation of hydroxyl radicals (.OH) both contributed the antibacterial ability of nCu-MWCNTs/H2O2 system. And MWCNTs as the support might be able to promote the electron transfer in nCu-MWCNTs for copper ion release. (C) 2016 Elsevier B.V. All rights reserved.
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