Journal
NANO LETTERS
Volume 10, Issue 9, Pages 3628-3632Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl101944e
Keywords
Nanowires; nanotubes; environmental applications; multiscale; textile
Categories
Funding
- NDSEG
- NSF
- Stanford Bio-X graduate fellowship program
- King Abdullah University of Science and Technology (KAUST) [KUS-I1-001-12]
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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 m(2)) 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.
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