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Synthesis of Ag/TiO<sub>2</sub> Core/Shell Nanoparticles with Antibacterial Properties
Lin, Yue,Qiqiang, Wang,Xiaoming, Zhang,Zhouping, Wang,Wenshui, Xia,Yuming, Dong Korean Chemical Society 2011 Bulletin of the Korean Chemical Society Vol.32 No.8
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.
Synthesis of Ag/TiO_2 Core/Shell Nanoparticles with Antibacterial Properties
Yue Lin,Wang Qiqiang,Zhang Xiaoming,Wang Zhouping,Xia Wenshui,Dong Yuming 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.8
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·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.