期刊
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
卷 92, 期 2, 页码 297-301出版社
CHEMICAL SOC JAPAN
DOI: 10.1246/bcsj.20180232
关键词
Silver nanoparticles; Hollow nanoparticles; Antibacterial activity
资金
- Japan Agency for Medical Research and Development (AMED) [JP18fm0208029]
- Japan International Cooperation Agency (JICA)
Silver nanoparticles are known to have strong antibacterial activity and constitute a novel material to treat infectious diseases caused by pathogenic bacteria. The antimicrobial activity of silver nanoparticles is influenced by two important factors, their high dispersion stability and their release of silver ions. In this study, silver nanoparticles were treated with gold ions. The resultant Ag/Au nanoparticles were a hollow-shaped alloy made of silver and gold atoms. The antibacterial activity of the Ag/Au nanoparticles against the pathogenic bacteria S. Typhimurium was stronger than the original silver nanoparticles. Additionally, the release of silver ions from the hollowed Ag/Au nanoparticles was higher than the original silver nanoparticles. The existence of gold atoms on the silver metal and chloride ions in the medium likely enhanced the release of silver ions from the nanoparticles. The gold treatment of silver nanoparticles is an effective method to improve their antimicrobial activity.
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