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中文摘要：
在异丙醇介质中用Frens金溶胶作种子介导合成二氧化硅包覆金（ Au@SiO2）纳米粒子。研究结果表明,单核Au@SiO2纳米粒子的产率取决于催化剂用量、硅源加入速率及种子数密度。通过种子数密度控制,合成了高度单分散的粒径为200,320和450 nm的Au@SiO2纳米粒子,以期用作功能材料的理想构筑单元。
英文摘要：
In this paper, we systematically investigated the synthesis of Au@SiO2 NPs in isopropanol medium using Frens Au colloids as seeds. It shows that the yield of mononucleate Au@SiO2 NPs is dependent on the amount of the catalyst added, the feeding rate of the silicon source, and especially the number density of the Au seeds introduced. Following these findings, highly monodispersed 200, 320, and 450 nm Au@SiO2 NPs were synthesized, which are ideal building blocks for construction of functional materials.
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