Shape-dependent antibacterial activities of Ag2O polyhedral particles.
Ag(2)O particles with different polyhedral shapes including octahedron, truncated octahedron, and cube were successfully synthesized by a simple wet-chemical method using silver nitrate, ammonia, and sodium hydroxide as raw materials at room temperature. Simply by tuning the concentration of starting materials, the shape of Ag(2)O particles evolved from octahedron to cube, and the size gradually decreased from 1-2 microm to 400-700 nm. As examples for promising applications, the antibacterial activities of the as-prepared Ag(2)O polyhedral particles were preliminarily studied. It has been found the antibacterial activity of Ag(2)O particles against E. coli depends on the shape of Ag(2)O particles, demonstrating that the surface structure of Ag(2)O particles affects the antibacterial activity.
State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
Xin
X
Wang
Hui-Fang
HF
Wu
Qin
Q
Kuang
Rong-Bin
RB
Huang
Zhao-Xiong
ZX
Xie
Lan-Sun
LS
Zheng
D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D004926:Escherichia coli / Q000187:drug effects*; D008826:Microbial Sensitivity Tests; D010087:Oxides / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D010316:Particle Size; D018030:Silver Compounds / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D013499:Surface Properties
D000900:Anti-Bacterial Agents; D010087:Oxides; D018030:Silver Compounds; C040225:disilver oxide