Preparation and structure characterization of Ag nanomaterials in hydroxyl-functionalized ionic liquids

作者：Li Han; Zhang Sheng Mao^*; Dai Chuang; Wu Zhi Shen; Zhang Zhi Jun

来源：Chinese Journal of Inorganic Chemistry, 2006, 22(10): 1879-1882.

• hydroxyl-functionalized ionic liquids
• Ag nanoparticles
• Ag nanorods
• diffusion-controlled theory

Ag nanoparticles were prepared using hydroxyl-functionalized ionic liquids as reductant and reaction medium. Nanoparticles with different particle sizes were obtained by using ionic liquids with different structures, while nanorods were harvested when the reaction temperature was increased. The materials obtained were investigated by XRD and TEM. The results indicate that the crystal is in face-centred cubic structure for both of Ag nanoparticles and nanorods, and the diameter of Ag nanoparticles prepared in 1-ethoxyl-3-methyl imidazolium tetrafluoroborate ([C(2)OHmim]BF4), 1-(4'-hydroxyl)butyl-3-methyl imidazolium tetrafluoroborate ([C(4)OHmim]BF4) and 1-(6'-hydroxyl)hexyl-3-methyl imidazolium tetrafluoroborate ([C(6)OHmim]BF4) ionic liquid is about 25, 15 and 10 nm, respectively. And the diameter of Ag nanorods is about 200 nm and 2 mu m in length. Finally, the formation mechanism of Ag nanoparticles and nanorods is proposed.

• 出版日期2006-10
• 单位河南大学