为获得抗菌性能优良的材料, 选用江西广丰黑滑石作为基体材料制备了Ag-ZnO/Talc三元复合材料, 并采用扫描电子显微镜、透射电子显微镜、X射线衍射和X射线光电子能谱等分析手段对复合材料进行表征, 以大肠杆菌和金黄色葡萄球菌为实验菌株采用平板计数法、抑菌圈法对复合材料抗菌性能进行试验。结果表明: 黑滑石的片层状结构促进纳米颗粒分散, 增大复合材料与细菌的接触面积; Ag-ZnO/Talc三元复合材料具有高的抗菌活性, 对大肠杆菌和金黄色葡萄球菌的抑菌率可达到99%以上。

To obtain materials with superior antibacterial properties, Ag-ZnO/Talc ternary composite was prepared by a water-bath heating method with black talc (from Guangfeng, Jiangxi) as a matrix material. The composite was characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy, respectively. Escherichia coli and staphylococcus aureus were used as the experimental strains. The antibacterial properties of the composite were examined by a plate counting method and a bacteriostatic zone method. The results show that the layered structure of talc sheet promotes the dispersion of nanoparticles and increases the contact area between the composite and bacteria. The Ag-ZnO/Talc composite displays a high antibacterial activity, and the antibacterial rate against escherichia coli and staphylococcus aureus reaches more than 99%.