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High Speed Water Sterilization Using One-Dimensional Nanostructures
These authors contributed equally to this work.
Section:Abstract
The removal of bacteria and other organisms from water is an extremely important process, not only for drinking and sanitation but also industrially as biofouling is a commonplace and serious problem. We here present a textile based multiscale device for the high speed electrical sterilization of water using silver nanowires, carbon nanotubes, and cotton. This approach, which combines several materials spanning three very different length scales with simple dying based fabrication, makes a gravity fed device operating at 100000 L/(h m2) which can inactivate >98% of bacteria with only several seconds of total incubation time. This excellent performance is enabled by the use of an electrical mechanism rather than size exclusion, while the very high surface area of the device coupled with large electric field concentrations near the silver nanowire tips allows for effective bacterial inactivation.
Results of the filtration performance as a function of time and bacteria concentration, as well as the performance of several alternative composite structures, detailed information on the COMSOL simulation, including a table of physical parameters. This material is available free of charge via the Internet at http://pubs.acs.org.
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This article has been cited by 11 ACS Journal articles (5 most recent appear below).
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History
- Published In Issue September 08, 2010
- Article ASAPAugust 20, 2010
- Received: June 1, 2010
Revised: July 22, 2010
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