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硅烷化陶瓷膜表面载银改性及其抗污染性能研究

作者：张绍伟，张荟钦，仲兆祥，邢卫红

单位：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，江苏南京 210009

关键词：陶瓷膜；硅烷化；纳米银；抗生物污染

DOI号：

分类号： TQ028.8

出版年,卷(期):页码： 2013,33(5):8-13

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

基金项目：

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)

作者简介：

张绍伟(1985-)，男，河南新乡市人，硕士研究生，研究方向：膜法水处理，E-mail：showwe2012@163.com. *通讯联系人：邢卫红，E-mail：xingwh@njut.edu.cn

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