Nano-silver loaded montmorillonite （Ag-MMT） was prepared by ion-exchange and then a UV-photoreduction two-step approach was applied. The silver content in Ag-MMT determined by Volhard method was about 6.4 wt%. The morphology and structure of as-synthesized Ag-MMT were characterized by scanning electron microscopy （SEM） and X-ray diffraction （XRD）. The results showed that the Ag nanoparticles were spherical and their diameters were about 15-20 nm. Moreover, the structure of MMT did not change. The minimum inhibition concentration （MIC） of Ag-MMT was 100×10-6 and the sterilizing efficiency （SE） of Ag-MMT was approximately 100% against Escherichia coli ATCC 11229 （E. coli. In addition, the slow release property of silver in Ag-MMT was also demonstrated.
参考文献
| [1] | B.Concepcion-Rosabal;G.Rodriguez-Fuentes;N.Bogdanchikova;M.Avalos;P.Bosch;V.H.Lara .Comparative study of natural and synthetic clinoptilolites containing silver in different states[J].Microporous and Mesoporous Materials,2005(1/3):249-255. |
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