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采用Stber方法,以AgNO3与柠檬盐钠还原反应所制备出的Ag纳米颗粒为种子,合成了Ag/SiO2核-壳结构的亚微米球。用透射电镜(TEM)观测所得产物的形貌和大小,并用光吸收谱仪测试了Ag纳米颗粒的表面等离子体共振(SPR)引起的光吸收峰。
St Agber’s method was used to synthesize Ag / SiO2 core-shell submicron spheres by using Ag nanoparticles prepared by the reduction of AgNO3 and sodium citrate as seeds. The morphology and size of the obtained product were observed by transmission electron microscopy (TEM) and the light absorption peaks due to surface plasmon resonance (SPR) of the Ag nanoparticles were measured by light absorption spectroscopy.