Novel Synthesis of Metal Nanostructures for SERS Application

• Main Authors: Christa Desmonda Ruslim, 林宗珊
• Other Authors: Yian Tai
• Format: Others
• Language: en_US
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/fny6zc

碩士 === 國立臺灣科技大學 === 化學工程系 === 99 === In this study, we synthesized metal nanostructures with novel approaches. A unique flower-like silver nanostructures have been synthesized with a simple solution galvanic reaction without any templates or seeds. The nanostructures, which are single crystalline truncate-hexagonal shape with multi-layers of petals, exhibiting high yield and uniform size. These nanostructures also exhibited high stability upon the fact that the structures can be kept intact even after 1 month of storage. On the other hand, paper substrate, a biodegradable and cost efficient material was used to synthesize anisotropic gold nanostructures. To characterize the as-synthesized silver and gold nanostructures, analytical methods such as UV-Visible, SEM, TEM, XRD, and XPS have been carried out. Furthermore, large surface-enhanced Raman scattering (SERS) effect was also observed upon utilizing the nanostructures by using Rhodamine 6G (R6G) and melamine as probe molecules. Our study suggested novel approaches to synthesis large quantity of metal anisotropic nanostructures with unique optical properties that can be used for further applications.