- 作者: 許世仁, 林志彪
- 作者服務機構: Department of Chemistry, National Dong Hwa University, Shoufeng, Hualien 974, Taiwan, R.O.C.
- 中文摘要: Micron-sized gold nanosheets were produced through thermolysis of a mixture composed of 1-octadecanylimidazole (C18-im) and HAuCl4 in a molar ratio of 4:1 at 200 oC for 1 h. Effects of the molar ratio of [C18-im]/[HAuCl4], the reaction temperature, and the N-alkylimidazole chain length were studied. Adjusting the molar ratio of [C18-im]/[HAuCl4] can tune the morphology and size of the nanostructures; the effect of reaction temperature is minimum; while using long chain imidazole tends to favor the formation of nanosheets, using 1-methylimidazole (C1-im) produces micron-sized polyhedra. The growth mechanism of these nanostructures was proposed. C18-im functions both as a templating and capping agent and favors the growth of nanosheets. On the other hand, C1-im functions only as a capping agent and thus favors the formation of polyhedra, especially octahedra.
- 英文摘要: --
- 中文關鍵字: Gold nanosheets; Thermolysis; N-Alkylimidazole stabilizer.
- 英文關鍵字: --