Antibacterial activity of silver and titania nanoparticles on glass surfaces

Abstract

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.

Development of photocatalysts based on TiO2 films with embedded Ag nanoparticles

“…This value is near to the reference values for metallic Ag (726.1 eV) and far from oxidized forms of Ag in AgO (724 eV) or Ag 2 O (724.4 eV). 52 Then, XPS data show that silver is incorporated as the zerovalent metal into the composite, and it remains in the same state during the complete sample treatment. The atomic Ag/Ti ratio at the surface is .07 as determined by data analysis from XPS spectra.…”

Surface Modification of Titanium Implants by Metal Ions and Nanoparticles for Biomedical Application

“…In addition, AgNPs have been demonstrated to have a strong bactericidal effect on various pathogens, such as Gram-positive and -negative bacteria and fungi . They also affect a variety of viruses. − …”

Engineered titania nanomaterials in advanced clinical applications

“…Interestingly, due to the efficacy of TiO 2 nps to kill even desiccation-resistant microbes, their value has increased in the food, cosmetic, and drug industries. Recently, glass surfaces coated with silver and TiO 2 nps showed promising results against bacteria S. aureus (Gram positive) and E. coli (Gram negative) as compared to the standard glass surface [ 82 ].…”