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http://dx.doi.org/10.5012/jkcs.2017.61.4.179

Preparation of ZnO/SiO2 Nano-Composition and Photocatalysts and Antibacterial Activity  

Kim, Jae-Uk (Department of Chemistry, Dankook University)
Yuk, Young-Sam (Department of Biomedical Laboratory Science, Dankook University)
Kim, Jong-Gyu (Department of Chemistry, Dankook University)
Publication Information
Journal of the Korean Chemical Society / v.61, no.4, 2017 , pp. 179-184 More about this Journal
Abstract
In this paper, a $ZnO/SiO_2$ nano-composite was prepared by a simple chemical method at room temperature. For the synthesis of ZnO nanoparticles (NPs), a sonochemical method was used, and $SiO_2$ NPs were prepared by precipitation method. The formation of $ZnO/SiO_2$ NCs was characterized by X-ray diffractometer (XRD) and confirmed by field-emission scanning electron microscopy (FE-SEM) and Fourier transform infra-red spectroscopy(FT-IR). The photocatalytic properties of $ZnO/SiO_2$ NCs formed at different concentrations of $SiO_2$ were evaluated by rhodamine-B dye. It was confirmed that increasing $SiO_2$ concentration resulted in an increase in the photocatalytic property. In addition, the antibacterial activity of $ZnO/SiO_2$ NCs was conducted against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). As a result, the antibacterial activities of E.coli and S. aureus were increased in the presence of thick SiO NPs layer.
Keywords
Zinc oxide; TEOS; Photocatalytic; Antibacterial activity;
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