摘要
在含有对苯二酚的[BMIm]PF。和[BMIm]NTf2离子液体的还原性溶液中。滴加AgNO，溶液制得Ag纳米粒子，通过XRD，TEM，TG和DTA对所制备的Ag纳米粒子的分析表征，表明Ag纳米粒子呈不规则的类球形，为面心立方结构，具有较窄的尺寸范围，粒径在8—43nm。在还原过程中，离子液体同时起到了溶剂和修饰剂的作用，在所生成的Ag纳米粒子的表面形成了一层离子液体的修饰层，稳定了纳米颗粒粒径，阻止了纳米粒子之间的团聚，同时也提高了Ag纳米粒子的热稳定性。
Ag nanoparticles are prepared by droppingAgNO3 solution into the reducing solution of 1-butyl-3-meth-ylimidazolium hexafluorophosphate （ [ BMIm ] PF6 ） and 1 -butyl-3-meth-ylimidazolium bis （trifluoromethanesulfonyl） imide （ [ BMIm ] NTf2） ionic liquids containing hydroquinone, respectively. The structure and morphology of Ag nanoparticles are characterized by XRD and TEM, and the thermostability by TG and DTA, respectively. The results show that Ag nanoparticles are irregular globoid and their size distributed in a narrow range of 8-43nm in diameter. The crystals are face-centered lattice cube. In reducing process, the ionic liquids are not only reactive media but also modifiers. They form a modifying layer in the surface of Ag nanoparticles to stabilize the size of the nanoparticles and hold back congregating among nanoparticles and also to increase the thermostability.
出处
《有色金属》
CAS
CSCD
北大核心
2010年第4期38-41,共4页
Nonferrous Metals
基金
云南省中青年学术技术带头人后备人才培养计划项目(2006PY01-50)
云南省应用基础研究计划项目(2006E0032M)
云南省教育厅科学研究基金项目(08Y0359)
昆明学院科学研究项目(2009G019)
