Silver Nanoparticles Supported on TiO2 and Their Antibacterial Properties: Effect of Surface Confinement and Nonexistence of Plasmon Resonance

Zoe Vineth Quiñones-Jurado, Miguel Ángel Waldo-Mendoza, Hugo Marcelo Aguilera-Bandin, Edgar Giovanny Villabona-Leal, Elsa Cervantes-González, Elías Pérez
2014 Materials Sciences and Applications  
Ag/TiO 2 nanocomposites are usually regarded as an effective synergy for high antimicrobial performance under ultraviolet-visible light conditions. This study confirmed that the surface plasmon resonance of Ag NPs plays an important role in relation to the NPs size and consequently with the antibacterial effect of the nanocomposite. We observed that under visible light the reactivity of TiO 2 cannot be amplified when it is supporting Ag NPs that have an inactive photocatalytically surface. The
more » ... cally surface. The results confirmed that the antimicrobial effectiveness of nanocomposite based on Ag NPs supported-TiO 2 is closely associated to the contact surface area and to the electronic performance of the noble metal.
doi:10.4236/msa.2014.512091 fatcat:slqmus3msrhmphtoyjlxffr4re