Mg₂TiO₄ spinel modified by nitrogen doping as a Visible-Light-Active photocatalyst for antibacterial activity.

ABSTRACT: Nitrogen doped Mg₂TiO₄ spinel, i.e. Mg₂TiO_4-xN_y, has been synthesized and investigated as a photocatalyst for antibacterial activity. Mg₂TiO_4-xN_y demonstrates superior photocatalytic activity for E. coli disinfection under visible light illumination (λ ≥ 400 nm). Complete disinfection of E. coli at a bacterial cell density of 1.0 × 10⁷ CFU mL^-1 can be achieved within merely 60 min. Mg₂TiO_4-xN_y is capable of generating superoxide radicals (^•O₂ ^-) under visible light illumination which are the reactive oxygen species (ROSs) for bacteria disinfection. DFT calculations have verified the importance of nitrog

SUBMITTER: Chang S 

PROVIDER: S-EPMC7833804 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature