Harpeness R, Peng Zhao, Liu Xiansong, Pol Vilas G, Koltypin Yuri, Gedanken Aharon
Department of Chemistry and Kanbar Laboratory for Nanomaterials, Bar-Ilan University Center for Advanced Materials and Nanotechnology, Bar-Ilan University, Ramat-Gan 52900, Israel.
J Colloid Interface Sci. 2005 Jul 15;287(2):678-84. doi: 10.1016/j.jcis.2005.02.020.
A rapid polyol process for the synthesis of ruthenium nanoparticles was developed using microwave irradiation. A colloidal solution of monodispersed anisotropic Ru metal nanoparticles (mean particle size 2-6 nm) with different aspect ratios was obtained first. Particles with different degrees of agglomeration have also been synthesized using monodisperse particles as seeds and PVP (poly-N-vinyl-2-pyrrolidone) as the stabilization reagent. The stabilization mechanisms of different protective reagents were studied by UV-vis spectra. The HRTEM images indicated that dendritic particles formed by controlling agglomeration consisted of single-crystal domains with a random crystalline orientation.
利用微波辐射开发了一种快速多元醇法来合成钌纳米颗粒。首先获得了具有不同纵横比的单分散各向异性钌金属纳米颗粒（平均粒径2 - 6纳米）的胶体溶液。还以单分散颗粒为晶种、聚乙烯吡咯烷酮（PVP）为稳定剂合成了具有不同团聚程度的颗粒。通过紫外可见光谱研究了不同保护剂的稳定机理。高分辨透射电子显微镜（HRTEM）图像表明，通过控制团聚形成的树枝状颗粒由具有随机晶体取向的单晶域组成。
