Synthesis of Ag/TiO<sub>2</sub> Core/Shell Nanoparticles with Antibacterial Properties
Synthesis of Ag/TiO<sub>2</sub> Core/Shell Nanoparticles with Antibacterial Properties
- 대한화학회
- Bulletin of the Korean Chemical Society
- Vol.32 No.8
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2011.012607 - 2610 (4 pages)
- 0
Monodispersed Ag/$TiO_2$ core/shell nanoparticles were synthesized in solution via colloid-seeded deposition process using Ag nanoparticles as colloid seeds and $Ti(SO_4)_2$ as Ti-source respectively. Silver nitrate was reduced to Ag nanoparticles with $N_2H_4{\cdot}H_2O$ in the presence of CTAB as stabilizing agent. The titania sols hydrolyzed by the $Ti(SO_4)_2$ solution deposited on the surface of Ag nanoparticles to form the Ag/$TiO_2$ core/shell nanoparticles. Inductively coupled plasma atomic emission spectrometry (ICP-AES) showed low amount of Ag ion leaching from the Ag/$TiO_2$ core/shell nanoparticles. The Ag/$TiO_2$ core/shell nanoparticles indicated excellent antibacterial effects against Escherichia coli and maintained long-term antibacterial property.
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