室温离子液体[BMIm]PF_6中纳米银的制备及结构表征  

Preparation and Characterization of Silver Nanoparticles in Room Temperature Ionic Liquid [BMIm]PF_6

作　　者：杨艳琼[1] 周艳丽[1] 马子鹤[1] 毕先钧[1] 

机构地区：[1]云南师范大学化学化工学院,云南昆明650092

出　　处：《云南化工》2008年第1期8-11,共4页Yunnan Chemical Technology

基　　金：云南省教育厅科学研究基金资助项目(06Z084A);云南师范大学大学生科研训练基金资助项目

摘　　要：在微波条件下合成了1-丁基-3-甲基咪唑六氟磷酸盐([BMIm]PF6)离子液体,用红外光谱对其结构进行了表征。用该离子液体作为反应介质,采用硼氢化钠为还原剂制备了金属银纳米微粒,用X射线衍射、扫描电子显微镜、傅立叶红外光谱和热分析对纳米银的结构和形貌进行了表征。结果表明,所制备的纳米银具有立方相结构,粒径约为10 nm;离子液体不但作为反应的溶剂而且还作为修饰剂,包覆在银纳米微粒的表面,从而阻止了银纳米微粒的团聚。Room temperature ionic liquid 1 - butyl - 3 - methylimidazolium hexafluorophosphrate was prepared under microwave irradiation, and then silver nanoparticles were synthesized in the ionic liquid with NaBH4 as reductant. The structure and morphology of the silver nanoparticles were characterized by XRD, SEM, IR and TG, and the result showed that the mean＇diameter of the nanoparticles was about 10 nm and the surface was modified with the room temperature ionic liquid.

关 键 词：离子液体 1-丁基-3-甲基咪唑六氟磷酸盐 纳米银 

分 类 号：O622.6[理学—有机化学] TB383[理学—化学]