利用逐步生长法制备出了一系列具有不同几何尺度的银纳米颗粒并利用正硅酸乙酯的水解,引入偶联剂,对银纳米颗粒进行表面改性,制备出具有包覆层(SiO2)和中心核(Ag)的复合纳米结构。确定了获得良好性能材料的最佳合成条件,系统研究了这些银纳米和核壳结构的特征、结构形成的材料学原因和光学性质。 A series of silver nano-particles with different geometric scales were prepared by the step growth method. By using the hydrolysis of tetraethylorthosilicate, the coupling agent was introduced to modify the surface of the silver nano- And central core (Ag) composite nanostructures. The optimum synthesis conditions for obtaining good performance materials were determined. The characteristics of the silver nanocrystals and core-shell structures, the materials science and the optical properties of the structures were systematically studied.