Kinetically controlled synthesis of silver nanorods in o-xylene

• Main Authors: Li,Lingchieh, 李怜潔
• Other Authors: 吉凱明
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/11537657910961197700

碩士 === 國立中正大學 === 化學暨生物化學研究所 === 99 === In recent years, we focused on studying the organic-phase synthetic route to metal nanoparticles in order to control their particle size, shape, stability and homogeneity. Thermal decomposition of organometallic precursor (hfac)Ag(PMe3) under certain conditions provided the uniform spherical silver nanoparticles in our previous study. Further study in this thermolysis process revealed that the rod-like intermediates formed in early stage of the process. Herein, we will present the preparation of silver nanorods from thermal decomposition of (hfac)Ag(PMe3) with oleylamine as a surfactant in o-xylene either in short reaction time or at lower reaction temperature. It is believed that oleylamine plays an important role to stabilize the silver nanorods. The silver nanorods are likely the kinetically stable products of the state and would convert to larger spherical particles through continuous heating. However, using a simple method to prepare silver nanorods in organic medium is undoubtedly a breakthrough. The shape and the size of silver nanorods were characterized by transmission electron microscopy (TEM), XRD, EDX and UV-Vis-NIR spectroscopic analysis.