Synthesis of Cu-SiO2 Core-Shell Using Ultrasonic Waves and Its Antibacterial Activity

摘要

In this study, we compared the final core-shell products produced in the presence or absence of ultrasonic waves and evaluated the antibacterial properties of the core-shell. When ultrasonic wave was used, a complete core-shell structure with a silica shell coated on an individual core particle could be observed. Transmission electron microscopy and energy dispersive X-ray spectroscopy were performed to confirm the shape of the core-shell structure formed in each case. In order to evaluate the antibacterial activity of the core-shell with the Cu core, their antibacterial activity was evaluated by the KS J 4206 and JIS Z 2801. The Cu-SiO2 core-shell showed a high level of microbial reduction and it also worked as filler in the glass powder.