Song, YY,Yang, T,Cao, J,Gao, ZD,Lynch, RP

2012

January

Microchimica Acta

Protein-mediated synthesis of antibacterial silver nanoparticles deposited on titanium dioxide nanotube arrays

Published

()

Protein-mediated synthesis TiO2 nanutube Ag nanoparticles Photocatalysis Biological template Antibacterial ANTIMICROBIAL PROPERTIES TIO2 NANOTUBES LAYERS ORGANIZATION ENHANCEMENT PARTICLES OXIDATION ELECTRODE FILMS AG

177

129

135

We report on an effective route to decorate titanium nanotube arrays (TiNT) with silver nanoparticles (AgNPs). In this method, surface-adsorbed antibody molecules serve as templates to bind silver ions by electrostatic interaction. The photocatalytic activity of the TiNT under UV irradiation causes the photoreduction of AgNPs to occur, and the biological template is decomposed simultaneously. This route also was successfuly applied to gold nanoparticles (starting from negatively charged metallic precursor ions). Compared to undecorated samples, the AgNPs/TiNT samples under visible light display a much higher antibacterial activity against Escherichia coli.

10.1007/s00604-012-0769-6