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4复合材料的制备与性能的抗菌药物含铜和锌离子PreparationandPropertiesofCompositeAntibacterialAge
Preparation and Properties of Composite Antibacterial Agent Containing Copper and Zinc Ions
Ren Shuxia a, Yang Huifang b, Tian Xiushuc Li Yanfangd
School of Material Science and Engineering, Shijiazhuang Railway Institute, Hebei, 050043, China
aren-shu-xia@163.com, byhf989@, ctianxiushu@163.com, dlyf36876@163.com
Keywords: Composite antibacterial agent, Containing copper and zinc ions, Antibacterial activities
Abstract. 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.
1 Introduction
Harmful bacteria exist anywhere in the world such as air, water, soil, surfaces of objects, our skins, etc. They have threatened the health of human beings seriously. For this reason, much attention has been paid to restraining and killing the harmful bacteria. And to build a healthy environment, the antibacterial materials as ecological functional materials have been developed, and how to prepare those materials and to investigate the properties of them have become one of the hot topics in the fields o
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