载银陶瓷膜的制备及其抗菌性能

发布时间：2018-02-16 09:40

  本文关键词： AlO膜 微滤 载银 抗菌　出处：《南京工业大学学报(自然科学版)》2016年06期 　论文类型：期刊论文

【摘要】：以AgNO_3溶液为Ag源,采用直接浸渍法对Al_2O_3膜表面进行抗菌处理,制备载银陶瓷微滤膜。采用场发射扫描电子显微镜(FESEM)、能量色散X线光谱仪(EDS)及X线光电子能谱仪(XPS)等表征载银陶瓷膜的结构和形貌。结果表明:载银处理对膜的形貌无显著影响,Ag颗粒在膜表面均匀分布,无明显团聚现象;400℃热处理后,Ag以单质形式存在于膜表面,具有良好的稳定性能。以大肠杆菌和金黄葡萄球菌为试验菌种,采用振荡烧瓶法和抑菌圈法测试载银膜的抗菌性能。发现载银膜在大肠杆菌和金黄葡萄球菌培养基上有明显的抑菌圈,杀菌率达到99.99%;对大肠杆菌菌悬液的过滤实验结果表明载银膜的通量衰减幅度小,载银后陶瓷膜的抗菌性能得到显著提高。
[Abstract]:Using AgNO_3 solution as Ag source, the surface of Al_2O_3 film was treated by direct impregnation. The structure and morphology of silver loaded ceramic membrane were characterized by field emission scanning electron microscopy (SEM), energy dispersive X-ray spectrometer (EDS) and X-ray photoelectron spectroscopy (XPS). The morphology has no significant effect on the uniform distribution of Ag particles on the surface of the films. There is no obvious agglomeration phenomenon. After heat treatment at 400 鈩，

本文编号：1515214