The antimicrobial properties, fibrous shape, and high
conductivity of CNTs enable novel CNT filters for both bacteria
and virus removal: The thin layer of CNTs effectively remove
bacteria by size exclusion and viruses by depth filtration
(Brady-Estevez et al., 2010); the retained bacteria are largely
inactivated by CNTs within hours. With a small intermittent
voltage (2e3 V), MWNTs can directly oxidize attached bacteria
and viruses and lead to inactivation in seconds (Rahaman
et al., 2012; Vecitis et al., 2011). The applied electric potential
also enhances viral transport to the anodic CNTs (Rahaman
et al., 2012). Such CNT filters can be used as high performance
POU devices for water disinfection with minimal to no
power requirement.
The antimicrobial properties, fibrous shape, and highconductivity of CNTs enable novel CNT filters for both bacteriaand virus removal: The thin layer of CNTs effectively removebacteria by size exclusion and viruses by depth filtration(Brady-Estevez et al., 2010); the retained bacteria are largelyinactivated by CNTs within hours. With a small intermittentvoltage (2e3 V), MWNTs can directly oxidize attached bacteriaand viruses and lead to inactivation in seconds (Rahamanet al., 2012; Vecitis et al., 2011). The applied electric potentialalso enhances viral transport to the anodic CNTs (Rahamanet al., 2012). Such CNT filters can be used as high performancePOU devices for water disinfection with minimal to nopower requirement.
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