高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (9): 1948.doi: 10.7503/cjcu20140230

• 物理化学 • 上一篇    下一篇

种子数密度控制的Au@SiO2纳米粒子的合成

罗春香, 崔莺, 喻慧敏, 孔格致, 胡家文()   

  1. 湖南大学化学生物传感与计量学国家重点实验室, 化学化工学院, 长沙410082
  • 收稿日期:2014-03-18 出版日期:2014-09-10 发布日期:2019-08-01
  • 作者简介:联系人简介: 胡家文, 男, 博士, 教授, 主要从事谱学电化学研究. E-mail: jwhu@hnu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 20873037, 91027037, J1103312, J1210040)和超分子结构与材料国家重点实验室(吉林大学)开放基金(批准号: SKLSSM200902 )资助

Seed Number Density-controlled Synthesis of Au@SiO2 Nanoparticles

LUO Chunxiang, CUI Ying, YU Huimin, KONG Gezhi, HU Jiawen*()   

  1. State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
  • Received:2014-03-18 Online:2014-09-10 Published:2019-08-01
  • Contact: HU Jiawen E-mail:jwhu@hnu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.20873037, 91027037, J1103312, J1210040) and the Open Project of State Key Laboratory of Supramolecular Structure and Materials, Jilin University, China(No.SKLSSM 200902)

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.

关键词: 金溶胶, 种子数密度, 二氧化硅, 纳米粒子

Abstract:

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.

Key words: Au colloids, Seed number density, Silica, Nanoparticles

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