载纳米银蛭石的制备和表征及其抗菌性能  

The Preparation and Characterization of Nano-Ag-loaded Vermiculite and Its Antibacterial Ability

作　　者：宫雪[1] 李政[1] 

机构地区：[1]西北师范大学化学化工学院,兰州730070

出　　处：《硅酸盐通报》2009年第3期506-510,520,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金资助项目(20772096)

摘　　要：本文以新疆蛭石为原料,通过对蛭石进行酸化、热及钠化处理后,在室温下采用离子交换法制备了载纳米银蛭石。用红外光谱、X射线衍射、原子吸收光谱和扫描电子显微镜对载纳米银蛭石进行了分析表征,结果表明:载纳米银蛭石的红外吸收谱与前躯体基本相同,金属纳米银颗粒较为均匀地负载在蛭石的表面,载纳米银蛭石的载银量为3.33%。用大肠杆菌和金黄色葡萄球菌进行抗菌实验表明,载纳米银蛭石具有很强的抗菌性能。The nano-Ag-loaded vermicuhte was prepared at room temperature by ion exchang using Xinjiang vermiculite, treated with acid, heat and sodium chloride, as raw material and was characterized by IR spectrometry, XRD, atomic absorption spectruometry, and SEM. The results show that the nano- Ag-loaded vermiculite has the similar IR spectrum with the purified vermiculite and silver nanoparticles uniformly coated on the vermiculite surface with 3.33% of Ag loading. The antibacterial experiment exhibited that the nano-Ag-loaded vermiculite had high antibacterial activity for S. aureus and E. coli.

关 键 词：蛭石 银 抗菌性能 

分 类 号：TD985[矿业工程—选矿]