硅烷化陶瓷膜表面载银改性及其抗污染性能研究  

Deposited silver on a silanized ceramic membrane for anti-biofouling properties

作　　者：张绍伟[1] 张荟钦[1] 仲兆祥[1] 邢卫红[1] 

机构地区：[1]南京工业大学膜科学技术研究所,国家特种分离膜工程技术研究中心,南京210009

出　　处：《膜科学与技术》2013年第5期8-13,共6页Membrane Science and Technology

基　　金：国家自然科学基金项目(21125629;21076102);国家863项目(2012AA03A606);江苏省环保科研课题项目(201018);江苏省高校自然科学基金(10KJB530002)

摘　　要：对陶瓷膜表面载银改性以提高其抗污染性能.对α-Al2O3陶瓷膜硅烷化改性后,在其表面负载纳米银颗粒,制备得到载银硅烷化陶瓷膜(Ag-SCM).采用热重、光电子能谱和扫描电镜等仪器对Ag-SCM进行了表征.以大肠杆菌为实验对象,比较了陶瓷膜改性前后的抑菌效果和对菌落总数为107 CFU/mL的水溶液过滤效果.结果表明,纳米银颗粒能均匀地负载到硅烷化陶瓷膜表面,稳定性好;Ag-SCM能有效抑制菌落生长,对水中的菌体100%的截留,并且膜通量有明显改善,表明Ag-SCM能有效地抑制微生物在膜表面的污染.Ceramic membrane was modified by silver to improve its anti-biofouling property. Silver nanoparticles were immobilized onto the surface-silanized α-Al2O3 ceramic membrane to prepare Ag-loaded silanized ceramic membrane （denoted as Ag-SCM）. Ag-SCM was characterized by TGA, XPS and SEM, etc. The stability of silver nanoparticles on ceramic membrane were investigated. Anti-biofouling property was tested with the typical bacteria E. coil with a load of 107 CFU/mL in ultrapure water. It was found that the silver nanoparticles uniformly deposited on the silanized ceramic membrane, and had well stability. Ag-SCM can effectively inhibit the growth of colonies and remove all bacteria in the water. The flux of Ag-SCM increased obviously. The results demonstrated that Ag-SCM can inhibit biofouling caused by bacteria in the membrane surface.

关 键 词：陶瓷膜 硅烷化 纳米银 抗生物污染 

分 类 号：TB383.2[一般工业技术—材料科学与工程]