Antimicrobial Activity of Single-Walled Carbon Nanotubes Suspended in Different Surfactants

Antimicrobial Activity of Single-Walled Carbon Nanotubes Suspended in Different Surfactants

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We investigated the antibacterial activity of single-walled carbon nanotubes (SWCNTs) dispersed in surfactant solutions of sodium cholate, sodium dodecylbenzene sulfonate, and sodium dodecyl sulfate.Among the three surfactants, sodium cholate demonstrated the weakest antibacterial activity against Salmonella enterica, Escherichia coli, and Enterococcus faecium and thereby skin massage gel was used to disperse bundled SWCNTs in order to study nanotube antibiotic activity.SWCNTs exhibited antibacterial characteristics for both S.enterica and E.

coli.With the increase of nanotube concentrations from 0.3 mg/mL to 1.5 mg/mL, the growth curves had plateaus at lower absorbance values whereas the absorbance value was not obviously affected by the incubation ranging from 5 min to 2 h.

Our findings indicate that carbon nanotubes could become an effective alternative to antibiotics in dealing with drug-resistant and multidrug-resistant bacterial strains because of the physical mode of Welding Machine Load Bank bactericidal action that SWCNTs display.