Self-activating electron transfer antibacterial strategy: Co3O4/TiO2 P-N heterojunction combined with photothermal therapy

An antibiotic-free bactericidal system combined with PTT was fabricated by introducing nanoscale Co 3 O 4 to a TiO 2 –Ti substrate (called Co 3 O 4 /TiO 2 –Ti). It manifested antimicrobial activity effectively in in vitro and in vivo experiments.