Preparation and Characterization of the Antibacterial Cu Nanoparticle Formed on the Surface of SiO2 Nanoparticles

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Department of Chemistry, Pukyong National University, Busan 608-737, Korea, and Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138
Cite this: J. Phys. Chem. B 2006, 110, 49, 24923–24928
Publication Date (Web):November 16, 2006
https://doi.org/10.1021/jp0656779
Copyright © 2006 American Chemical Society
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Abstract

Cu deposition on the surface of spherical SiO2 nanoparticles was studied to achieve the hybrid structure of Cu-SiO2 nanocomposite. SiO2 nanoparticles served as seeds for continuous Cu metal deposition. The chemical structure and morphology were studied with X-ray photoelectron spectroscopy (XPS), scanning electron microscope energy dispersive X-ray (SEM-EDX), and a transmission electron microscope (TEM). The antibacterial properties of the Cu−SiO2 nanocomposite were examined with disk diffusion assays. The homogeneously formed Cu nanoparticles on the surface of SiO2 nanoparticles without aggregation of Cu nanoparticles showed excellent antibacterial ability.

 Pukyong National University.

 Harvard University.

*

 Address correspondence to this author. Phone:  +82-51-510-6379. Fax:  +82-51-581-8147. E-mail:  [email protected]

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