羟基功能化离子液体中Pd纳米微粒制备与结构表征

Preparation and Structure Characterization of Pd Nanoparticles in Hydroxyl-functionalized Ionic Liquids

近年来,室温离子液体（Room Temperature Ionic Liquids）作为一种新颖的催化剂和绿色溶剂正在被越来越多的人们所认识和接受,在有机合成、催化和萃取分离等领域得到了广泛的应用。而功能化离子液体研究的深入开展不仅大大地丰富了离子液体家族的多样性，而且赋予了离子液体特殊的物理、化学性能，也极大地拓展了离子液体的应用领域，关于功能化离子液体的研究．将是未来离子液体研究领域的一个主要方向。

1-Ethoxyl-3-methyl imidazolium tetrafluoroborate （[C2OHmim]BF4）, 1-（4＇-hydroxyl）-butyl-3-methyl imidazolium tetrafluoroborate （[C4OHmim]BF4） and 1-（6＇-hydroxyl）-hexyl-3-methyl imidazolium tetrafluoroborate （[C6OHmim]BF4） were synthesized and then Pd nanoparticles were prepareds in these ionic liquids .The structure and shape of Pd nanoparticles were investigated by XRD and TEM. The results indicate that the Pd nanoparticles are fcc structure and there are some differences in the diameter of Pd nanoparticles prepared in different ionic liquids, i.e. 150 nm, 30 nm, 10 nm, respectively. The formation mechanism of nanoparticles is proposed.