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

[1] Liu, C.X., Zhang, D.R., He, Y., et al. Modification of membrane surface for anti-biofouling performance: Effect of anti-adhesion and anti-bacteria approaches[J]. Journal of Membrane Science, 2010, 346(1): 121-130.
[2] Rana, D., Matsuura, T. Surface modifications for antifouling membranes[J]. Chemical Reviews, 2010, 110(4): 2448-2471.
[3] Hwang, B.-K., Lee, W.-N., Yeon, K.-M., et al. Correlating TMP Increases with Microbial Characteristics in the Bio-Cake on the Membrane Surface in a Membrane Bioreactor[J]. Environmental Science Technology, 2008, 42(11): 3963-3968.
[4] Yang, W., Cicek, N., Ilg, J. State-of-the-art of membrane bioreactors：Worldwide research and commercial applications in North America[J]. Journal of Membrane Science, 2006, 270(1-2): 201-211.
[5] 闫丽珠, 陈梅雪, 贺泓, 等. 氧化铝负载银催化剂的杀菌作用[J]. 催化学报, 2005, 26(12): 1122-1126.
[6] Chamakura, K., Perez-Ballestero, R., Luo, Z., et al. Comparison of bactericidal activities of silver nanoparticles with common chemical disinfectants[J]. Colloids and Surfaces B-Biointerfaces, 2011, 84(1): 88-96.
[7] 蔡佑星, 金玉洁, 章苹. LDPE_nano_Ag复合膜的抗菌性[J]. 包装工程, 2010, 31(9): 54-56.
[8] 孙振玲, 刘俊龙. 抗菌塑料的制备及应用研究进展[J]. 塑料科技, 2007, 35(10): 102-107.
[9] Chen, M., Yan, L., He, H., et al. Catalytic sterilization of Escherichia coli K 12 on Ag/Al2O3 surface[J]. Journal of Inorganic Biochemistry, 2007, 101(5): 817-823.
[10] Chang, Q., He, H., Ma, Z. Efficient disinfection of Escherichia coli in water by silver loaded alumina[J]. Journal of Inorganic Biochemistry, 2008, 102(9): 1736-1742.
[11] Kumar, V.S., Nagaraja, B.M., Shashikala, V., et al. Highly efficient Ag/C catalyst prepared by electro-chemical deposition method in controlling microorganisms in water[J]. Journal of Molecular Catalysis A: Chemical, 2004, 223(1-2): 313-319.
[12] Gray, J.E., Norton, P.R., Alnouno, R., et al. Biological efficacy of electroless-deposited silver on plasma activated polyurethane[J]. Biomaterials, 2003, 24(16): 2759-2765.
[13] 洪剑寒, 王鸿博, 魏取福, 等. 磁控溅射法制备纳米Ag薄膜的AFM分析和导电性能[J]. 纺织学报, 2006, 27(9): 14-17.
[14] Lee, S.Y., Kim, H.J., Patel, R., et al. Silver nanoparticles immobilized on thin film composite polyamide membrane: characterization, nanofiltration, antifouling properties[J]. Polymers for Advanced Technologies, 2007, 18(7): 562-568.
[15] Kim, J., Seidler, P., Wan, L.S., et al. Formation, structure, and reactivity of amino-terminated organic films on silicon substrates[J]. Journal of Colloid and Interface Science, 2009, 329(1): 114-119.
[16] Ostwal, M., Singh, R.P., Dec, S.F., et al. 3-Aminopropyltriethoxysilane functionalized inorganic membranes for high temperature CO2/N2 separation[J]. Journal of Membrane Science, 2011, 369(1-2): 139-147.
[17] Meng, X.J., Liu, Q.L., Zhu, A.M., et al. Amino-functionalized poly(vinyl alcohol) membranes for enhanced water permselectivity[J]. Journal of Membrane Science, 2010, 360(1-2): 276-283.
[18] Lv, Y., Liu, H., Wang, Z., et al. Silver nanoparticle-decorated porous ceramic composite for water treatment[J]. Journal of Membrane Science, 2009, 331(1-2): 50-56.
[19] 张兵兵. 陶瓷膜表面粗糙度控制及对分离性能的影响[D]. 南京: 南京工业大学, 2009.
[20] Silvert, P.Y., Herrera-Urbina, R., Duvauchelle, N., et al. Preparation of colloidal silver dispersions by the polyol process. Part 1:Synthesis and characterization[J]. Journal of Materials Chemistry, 1996, 6(4): 573-577.
[21] Koonaphapdeelert, S., Li, K. Preparation and characterization of hydrophobic ceramic hollow fiber membrane[J]. Journal of Membrane Science, 2007, 191(1-2): 70-76.
[22] 王旭珍, 翟培宇, 曲江英, 等. 银纳米粒子的制备及其在光催化中的应用[J]. 功能材料, 2009, 40(9): 1573-1576.
[23] 刘素琴, 樊新, 黄健涵, 等. 规则球形纳米银粉的制备及表征[J]. 中南大学学报, 2007, 38(3): 497-500.
[24] Ma, N., Fan, X., Quan, X., et al. Ag–TiO2/HAP/Al2O3 bioceramic composite membrane: Fabrication, characterization and bactericidal activity[J]. Journal of Membrane Science, 2009, 336(1-2): 109-117.
[25] 刘平, 王军, 姚月. 稀土元素Ce(La)促进的Pt/β催化剂上正庚烷的临氢异构化[J]. 南京工业大学学报（自然科学版）, 2011, 33(1): 8-13.
[26] Liu, Y., Wang, X., Yang, F., et al. Excellent antimicrobial properties of mesoporous anatase TiO2 and Ag/TiO2 composite films[J]. Microporous and Mesoporous Materials, 2008, 114(1-3): 431-439.
[27] Zhu, X., Bai, R., Wee, K.H., et al. Membrane surfaces immobilized with ionic or reduced silver and their anti-biofouling performances[J]. Journal of Membrane Science, 2010, 363(1-2): 278-286.
[28] 孙磊, 刘爱心, 陶小军, 等. 水溶性银纳米材料的制备及抗菌性能研究进展[J]. 化学研究, 2010, 21(3): 106-112.