The bactericidal property of the m TiO and m

This sterilization of the gram-negative E coli stems primarily from the release of Ag ions from the m-TiO2@Ag particles [7] and [8], despite the low Ag concentration (ca. 3.8 at%) and the presence of oxide layer on the Ag nanoparticles. The decoration of Ag nanoparticles on the m-TiO2 particles hence renders bi-functional UV photocatalysis and bactericide activities of the composite particles.