摘要
采用生物还原法制备生物纳米银(Bio-Ag^0),通过相转化法制备Bio-Ag^0/聚醚砜(PES)复合膜。扫描电镜分析表明,Bio-Ag^0可以均匀稳定地分散在PES基膜中。纳米银共混可以改善膜断面孔结构,在不影响蛋白质截留率的前提下提高复合膜的纯水通量。采用抑菌环、菌落计数及孔板生物膜培养法研究了Bio-Ag^0/PES复合膜的抗污染性能。结果显示,Bio-Ag^0不仅使纳米复合膜具备良好的抗菌性,而且能有效地抑制细菌在膜表面的粘附及生物膜的形成,显著提高膜材料的抗生物污染性能。
Biogenic silver nanoparticles (Bio-Ag^0)were synthesized via the bioreduction method.Bio-Ag^0/PES nanocomposite membranes were prepared by blending different amounts of Bio-Ag^0 to the PES dope solution using the phase-inversion process.SEM results demonstrated that Bio-Ag^0 can well disperse on PES matrix without obvious aggregation.Bio-Ag^0 incorporation slight improved the cross-section morphology of PES membrane,and improved the water permeability and also did not sacrifice the protein rejection capability of composite membranes.The anbiofouling property of Bio-Ag^0/PES were tested by inhibition zone method,colony forming count method and the biofilm formation assay.Bio-Ag^0/PES not only exhibited excellent anti-bacterial activity,but also prevented bacteria attachment on the membrane surface and decreased the biofilms formation.Bio-Ag^0/PES were considered to be an effective strategy to significantly improve the anti-biofouling properties of membrane materials.
作者
张曼莹
刘姿铔
邬艳君
Zhang Manying;Liu Ziya;Wu Yanjun(Department of Chemical and Environmental Engineering,Jiangsu University of Technology, Changzhou 213001)
出处
《化工新型材料》
CAS
CSCD
北大核心
2018年第12期99-103,共5页
New Chemical Materials
基金
国家自然科学基金青年基金(51508239)
江苏省自然科学基金青年基金(BK20150245)
江苏省"青蓝工程"项目
关键词
生物纳米银
纳米复合膜
抗菌性
抗生物污染
通量恢复率
biogenic nano silver
nanocomposite membrane
antibacterial
antibiofouling
flux recovery ratio
作者简介
张曼莹(1987-),女,博士研究生,讲师,研究方向为抗污染膜材料制备及应用。
