Antibacterial activity of silver and titania nanoparticles on glass surfaces (original) (raw)

A liquid flame spray (LFS) nanoparticle deposition process was used to generate glass surfaces with silver (Ag) and titania (TiO2) nanoparticles for antibacterial activity against two common pathogenic bacteria causing community-associated and hospital-acquired infections, gram positive Staphylococcus aureus (S. aureus) and gram negative Escherichia coli (E. coli). All nanoparticle coatings increased antibacterial activity compared to a reference glass surface. The silver nanoparticle coatings showed the highest antibacterial activity with E. coli. On contrary, TiO2 nanoparticle coatings were found to have a higher antibacterial activity against S. aureus than E. coli. No significant differences in antibacterial activity were observed between the two used nanoparticle deposition amounts.