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SUN CHUANYU1,* , WANG YU1
The medical stone is a type of natural stone which is ric h in Silicon and many metal and trace elements. elements.[ The composite antibacterial agents were prepared with “medical stone” containing Cu 2+ and Zn 2+ by liquid ion-exchange reaction. The ion exchange capacity of the medical stone composite antibacterial agents (MSAA) were investigated by Inductively Coupled Plasma Atomic Emission Specrometry ICP-AES), and the antibacterial activities of these agents were tested by bacteriostasis ratio and the structures were characterized by X-Ray Diffractomer(XRD) and Scanning electron microscope 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 0.2 mol/L Cu 2+ and 0.6 mol/L Zn 2+ reacted with medical stone in the solution with pH of 8 for 8 hours at 50 ºC. Meanwhile good antibacterial activities and safety are also gained. The reasons for causing the above results are that copper and zinc ions can enter into the framework of medical stone by ion exchanging and adsorption, and are slowly released owing tostone porosity..
Antibacterial activities, Composite antibacterial agent, Containing copper and zinc ions.
SUN CHUANYU, WANG YU, Synthesis and properties of composite antibacterial agent containing copper and zinc ions, Optoelectronics and Advanced Materials - Rapid Communications, 6, 7-8, July-August 2012, pp.771-773 (2012).
Submitted at: April 11, 2012
Accepted at: July 19, 2012
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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