TiO_2/Ag型抗菌活性碳纤维的制备和性能表征  

Preparation and Characterization of Activated Carbon Fibers Supported with TiO_2/Ag for Antibacterial Behavior

作　　者：倪平[1] 李静[1] 闫亮[1] 杨立明[1] 索继栓[1] 李树本[1] 

机构地区：[1]中国科学院兰州化学物理研究所精细石油化工中间体国家工程研究中心,甘肃兰州730000

出　　处：《材料科学与工程学报》2004年第6期816-819,共4页Journal of Materials Science and Engineering

基　　金：甘肃省科技攻关资助项目 (2GSO33 A52 0 1 9) ;中国科学院知识创新工程重要方向资助项目(KGCX2 SW 2 1 0 0 2 )

摘　　要：采用涂覆和焙烧的简便方法 ,将载银二氧化钛 (TiO2 Ag)均匀地沉积在活性碳纤维表面。利用扫描电镜、氮气吸脱附等对活性碳纤维结构进行表征 ,研究发现活性碳纤维的微孔结构、活性碳纤维的高吸附性能基本保持不变。利用改良抑菌圈法研究了这类TiO2 Ag活性碳纤维对大肠杆菌、金黄色葡萄球菌、枯草杆菌和链球菌的杀灭效果。结果表明 ,因Ag和TiO2 相互协同作用 ,TiO2 Ag活性碳纤维的抗菌性大大提高 ,当Ag含量为 0 .5 %时 ,在 37°C培养 4小时后 ,TiO2 Ag活性碳纤维对大肠杆菌、金黄色葡萄球菌就有很强的抗菌能力。由于TiO2 特殊的光催化特性 ,使TiO2 Ag活性碳纤维不仅适用于水的净化抗菌处理 ,更适用于空气的净化抗菌处理。Antibacterial activated carbon fibers have been prepared by spreading TiO 2/Ag in ACF surfaces. The structure of the TiO 2/Ag/ACFs was analyzed by scanning electron microscopy (SEM) and BET volumetric measurement with nitrogen adsorption. The antibacterial activities of TiO 2/Ag-ACFs for S. aureus, E. coli, Streptococcus and B.subtilis were estimated by modified haloes at surrounding of activated carbon on agar. The experimental result shows that TiO 2/Ag was distributed uniformly on the surface of the fibers and the microstructure of ACFs was influenced slightly. The TiO 2/Ag-ACF containing as low as 0.5wt% of silver at incubation 4h exhibited strong antibacterial activity because of cooperative action between TiO 2 and Ag. TiO 2/Ag-ACFs will be well used in water as well as air antibacterial and purification systems.

关 键 词：活性碳纤维 TIO2 性能表征 抗菌能力 制备 涂覆 载银 金黄色葡萄球菌 抗菌活性 大肠杆菌 

分 类 号：TQ342[化学工程—化纤工业] TQ424