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http://dx.doi.org/10.5012/bkcs.2011.32.8.2607

Synthesis of Ag/TiO2 Core/Shell Nanoparticles with Antibacterial Properties  

Lin, Yue (State Key Laboratory of Food Science and Technology, Jiangnan University)
Qiqiang, Wang (State Key Laboratory of Food Science and Technology, Jiangnan University)
Xiaoming, Zhang (State Key Laboratory of Food Science and Technology, Jiangnan University)
Zhouping, Wang (State Key Laboratory of Food Science and Technology, Jiangnan University)
Wenshui, Xia (State Key Laboratory of Food Science and Technology, Jiangnan University)
Yuming, Dong (School of Chemical and Material Engineering, Jiangnan University)
Publication Information
Bulletin of the Korean Chemical Society / v.32, no.8, 2011 , pp. 2607-2610 More about this Journal
Abstract
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.
Keywords
Nanocomposites; Spectroscopy; X-ray techniques;
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