作　　者： ; ; ; ; ; ; ;

机构地区： 中国科学院兰州化学物理研究所固体润滑国家重点实验室

出　　处： 《物理化学学报》 2004年第5期554-556,共3页

摘　　要： 利用化学还原方法在室温离子液体1-甲基-3-丁基咪唑四氟硼酸盐中制备了金属银纳米微粒,采用X射线衍射,透射电子显微镜,傅立叶红外光谱和热分析对所制备的样品进行了结构表征.结果表明,所制备的银纳米微粒具有立方相结构,粒径约为20nm.离子液体不但作为反应的溶剂而且作为修饰剂修饰在银纳米微粒的表面,从而有效地阻止了银纳米微粒的团聚. Silver nanoparticles were synthesized in a room temperature ionic liquid via chemical reduction under ambient conditions. X-ray power diffraction, transmission electron microscopy, thermal analysis and FT-IR were used to characterize the structure of the Ag nanoparticles. The results indicate that the mean diameter of the namoparticles is about 20 nm and the surface of the Ag nanoparticles was modified with the room temperature ionic liquid. So we conclude that the room temperature ionic liquid is not only used as reaction medium but also as stabilizing agent to prevent the silver nanoparticles aggregating. The proposed formation mechanisms of silver nanoparticles are discussed.

关 键 词： 银纳米微粒 室温离子液体 热分析技术 射线衍射 傅立叶红外光谱 透射电子显微镜

领　　域： [一般工业技术] [理学] [理学]