Surface reactable modified silver nanoparticles were prepared by NaBH4 reduced silver ion in the aquenous solvent, in the presence of the double group modifying agent, O,O′-di(11-bromic undecane)dithiophosphonic acid. The morphology and structure of the product were characterized using Transmission Electron Microscope(TEM), UV-Visible Absorption(UV-Vis) spectra, Fourier Transform Infrared(FTIR) spectra. The result indicate that the products are spherical shape and no aggregation, C-Br functional groups are on the outermost portion of the silver nanoparticles. The nanoparticles were well dispersed in organic solution, such as chloroform, petroleum ether, toluene etc. The analysis of the sample which reacted with trimethylamine by X-ray photoelectron spectra(XPS) shows the silver nanoparticles can undergo many reactions.
ZnO nanorods were successfully synthesized by thermal decomposition of Zn（OH）2 in the ionic （liquid） 1-butyl-3-ethylimidazolium tetrafluoroborate, and the growth mechanism of ZnO micro-crystallites was presumed. Their structure and morphology were characterized by means of transmission electron microscopy（TEM）, infrared spectroscopy（IR）, and X-ray powder diffraction（XRD）. The TEM results （indicate） that the diameters and lengths of the ZnO nanorods were ca. 25 nm and ca. 150 nm, respectively. The IR spectra show that the ZnO nanorods were modified by 1-butyl-3-ethylimidazolium tetrafluoroborate. The XRD pattern reveals that the prepared ZnO nanorods belong to the hexagonal crystal system. The above-mentioned results indicate that ionic liquid can not only act as a reaction medium but also modify ZnO nanorods in the reaction.
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。
Organic-dispersible lanthanide fluorides nanocrystals were synthesized at a large scale using colloid-extraction method, in the presence of dialkyl-dithiophosphinic acid (DDPA) as the extraction agent. The products were characterized by means of X-ray powder diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and Fourier transformation infrared (FTIR) spectroscopy. It was found that the synthesized lanthanide fluorides nanoparticles had high purity and crystallinity, and could be well dispersed in organic solvents such as chloroform, toluene etc., which could be closely related to the surface-capping of the nanocrystals by the DDPA molecules. Moreover, the nanocrystals before and after extraction by DDPA showed few differences in the microscopic morphologies. It was implied that DDPA as the extraction agent had good protection to the nanocrystals as well, which could be essential to the commercial application of the titled rare earth nanocrystals as novel multifunctional additives in the fields of lubrication.
1-Methyl-3-carboxymethyl imidazolium chlorine（\C2OOHmim\Cl） ionic liquid surface-capped TiO 2 nanoparticles were prepared by using tetra-n-butyl titanate ethanol solution as a precursor. The structure of nanoparticles was characterized by FTIR, TEM, XRD and XPS. The results confirmed that \KG-1/5C2OOHmim\·Cl ionic liquid combined with TiO 2 nanoparticles by chelation, the average diameter of TiO 2 nanoparticles was about 8 nm and anatase state was obtained. And only anatase existed even after calcinated at 750 ℃. As to the formation mechanism, we think that the inorganic-organic copolymerized surface-capped layer and repulsive force of positive charge played an important role in the formation and stabilization of TiO 2 nanoparticles.
