关键词: 蒙脱石;Cu2+;ZnO;抑菌活性

Abstract: The Cu2+/ZnO-MMT antimicrobial material was prepared by using Cu (NO3)2, ZnCl2, NaOH and montmorillonite (MMT) as the main raw material.The structure, surface properties and antibacterial properties of Cu 2+/ZnO-MMT were characterized .The results showed that Cu 2+/ZnO-MMT had strong antibacterial activity against Escherichia coli ( E.coli.) and Staphylococcus aureus ( S.aureus ) .The bactericidal mechanism of Cu 2+/ZnO-MMT was studied using E .coli as the tested strain .The bacterial cells were adsorbed onto the surface of MMT and the cytoplasmic membrane was destroyed by the loaded Cu2+and ZnO.These led to the leak of the contents in cell and the death of E.coli.

Key words: montmorillonite;Cu2+;ZnO;antibacterial activity