Thorn-like TiO₂ nanoarrays with broad spectrum antimicrobial activity through physical puncture and photocatalytic action.

ABSTRACT: To overcome the conventional limitation of TiO₂ disinfection being ineffective under light-free conditions, TiO₂ nanowire films (TNWs) were prepared and applied to bacterial disinfection under dark and UV illumination. TNW exhibited much higher antibacterial efficiencies against Escherichia coli (E. coli) under dark and UV illumination conditions compared to TiO₂ nanoparticle film (TNP) which was almost inactive in the dark, highlighting the additional contribution of the physical interaction between bacterial membrane and NWs. Such a physical contact-based antibacterial activity was related to the NW geometry such as diameter, length, and density. The combined role of physical puncture and photocatalytic action in the mechanism underlying higher bactericid

SUBMITTER: Kim EJ 

PROVIDER: S-EPMC6757029 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature