Synthesis of Monodispersed Ag-Coated SiO₂ Nanoparticles with one-Pot Method and Investigation of its Antibacterial Activity

Abstract:

Monodispersed SiO₂/Ag core-shell nanoparticles have been synthesized successfully via a facile and fast route. Morphology of the product was investigated by high-resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD) technique. It has been revealed that the diameter of SiO₂/Ag compostie was ca. 220 nm and the shell of Ag nanoparticle are homogeneous and monodispersed. The antibacterial activities of SiO₂/Ag core-shell nanoparticles were tested by means of minimal inhibitory concentration (MIC) and viable cell counting method. The results showed that the SiO₂/Ag presents a good antibacterial performance against Escherichia coli (E. coli), Staphylococcus aureus (S. aureus) and Candida albicans (C. albicans), which indicated its potential applications as antibacterial material for microbiocides.

• Periodical: Applied Mechanics and Materials (Volumes 117-119)
• Pages: 940-943
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.117-119.940
• Online since: October 2011
• Authors: Nian Chun Zhang, Xiang Yu, En Yong Ding
• Keywords: Antibacterial Activity, Core-Shell Structure, Electron Microscopy, Nanoparticle, Silica Spheres

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