Preparation and Properties of Composite Antibacterial Agent Containing Copper and Zinc Ions
The composite antibacterial agents were prepared with Medical stone containing Cu2+ and Zn2+ by liquid ion-exchange reaction. The ion exchange capacity of the as-prepared Medical stone composite antibacterial agents (MSAA) products were investigated by ICP-AES, and the antibacterial activities of the agents were tested by Bacteriastasis ratio, and the structures were characterized by XRD and SEM. The results show that the conditions of preparation, such as pH, concentrations of copper and zinc ions, reaction time and reaction temperature, have important influences on the ion exchange of MSAA. The maximum ion exchange capacity have been obtained when 0.2mol/l Cu2+ and 0.6 mol /l Zn2+ reacted with Medical stone powers in the solution with pH values of 8 for 8 hours at 50 ℃. Meanwhile good antibacterial activities and safety are also gained. The reasons for causing the above results are that copper and zinc ions can enter the framework of Medical stone through ion exchanging and adsorption, and are released slowly owing to its porosity.
Composite antibacterial agent Containing copper and zinc ions Antibacterial activities
Ren Shuxia Yang Huifang Tian Xiushu Li Yanfang
School of Material Science and Engineering, Shijiazhuang Railway Institute, Hebei, 050043, China
国际会议
青岛
英文
965-968
2009-10-09（万方平台首次上网日期，不代表论文的发表时间）