Preparation and SERS Study of Triangular Silver Nanoplates

Metal nanostructures have unique properties that differ from their bulk structures. Of the metals, silver has probably play the most important role in the development of plasmonics, and its unique properties make it well-suited for most of the next-generation plasmonic technologies. Among the various silver nanostructures, silver nanoplates have attracted considerable attention because of their shape-dependent optical properties, which have been applied in surface enhanced Raman spectroscopy (SERS). In this study, the direct chemical reduction route was used to prepare silver nanoplates. Then the influence of experimental conditions on the morphologies of silver nanoplates has been studied. The results has been proved by the UV-vis spectrum and the transmission electron microscope images of the triangular silver nanoparticle. Finally, the silver nanoplates have been applied in SERS properties with Rhodamine 6G as the probe molecules. It was found that the SERS enhancement ability of the silver nanoplates is remarkable. By comparing the advantages and disadvantages of solid Raman and liquid Raman tests, Liquid Raman test is considered to be simpler and more convenient, with high performance price ratio and extremely high application value in the future. (paper)