- 作者: 陳浩銘,劉如熹
- 作者服務機構: Department of Chemistry, National Taiwan University, Taipei 106, Taiwan, R.O.C.
- 中文摘要: In this paper, we report a new approach, which could fabricate gold nanowires by controlling the volume of growth solution. The shape evolutions ranging from fusiform nanoparticles to 1-D rods was observed. Increasing the addition of growth solution can control the length of nanorods. The length of rods can be extended to 2 μm, and nanorods with aspect ratios of up to ~ 70 could be obtained. Moreover, X-ray absorption spectroscopy (XAS) is applied herein to elucidate the growth mechanism of gold nanorods. The gold ions were directly reduced to gold atoms by ascorbic acid during the reaction, and then gold atoms were deposited on the surface of gold seeds that were introduced into the reaction. Extended X-ray absorption fine structure (EXAFS) confirmed the growth of gold and the environment around Au atoms over the reaction. The XAS are expected to have wide applications in the growth of gold and other related materials.
- 英文摘要: --
- 中文關鍵字: Gold nanorods; X-ray absorption spectroscopy; Extended X-ray absorption fine structure.
- 英文關鍵字: --