Abstract
This work reported an efficient electrochemical treatment for drinking water disinfection using a pyrolytic graphite electrode modified with ferrocenyl tethered poly(amidoamine) dendrimers–multiwalled carbon nanotubes–chitosan nanocomposite. The influence parameters of electrochemical disinfection of Escherichia coli and Staphylococcus aureus, such as applied potential and sterilization time, were investigated. Further investigation indicated that almost all (99.99 %) of the initial bacteria were killed after applying a low potential of 0.4 V for 10 min. During the electrochemical disinfection process, the oxidized form of ferrocene was formed on electrode, which played a key role in the disinfection towards E. coli and S. aureus. Hence, the proposed method may provide potential application for the disinfection of drinking water.
Schematic diagram of electrochemical disinfection progress
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (no. 21075078, 21105056) and the Natural Science Foundation of Shandong province, China (no. ZR2010BM005, ZR2011BQ001).
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Shang, K., Qiao, Z., Sun, B. et al. An efficient electrochemical disinfection of E. coli and S. aureus in drinking water using ferrocene–PAMAM–multiwalled carbon nanotubes–chitosan nanocomposite modified pyrolytic graphite electrode. J Solid State Electrochem 17, 1685–1691 (2013). https://doi.org/10.1007/s10008-013-2031-5
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DOI: https://doi.org/10.1007/s10008-013-2031-5