二甲胺
材料科学
涂层
银纳米粒子
化学工程
催化作用
聚合
胺气处理
纳米颗粒
硼氢化钠
纳米技术
化学
复合材料
有机化学
聚合物
工程类
作者
Yoshio Kobayashi,Hironori Katakami,Eiichi Mine,Daisuke Nagao,Mikio Konno,Luis M. Liz-Marzán
标识
DOI:10.1016/j.jcis.2004.08.184
摘要
Silver nanoparticles prepared through a borohydride-reduction method were directly coated with silica by means of a seeded polymerization technique based on the Stober method. Various amine catalysts were used for initialization of a sol-gel reaction of TEOS with no need for a prior surface modification. Use of dimethylamine (DMA) as a catalyst was found to be necessary to obtain a proper coating. The silica shell thickness was varied from 28 to 76 nm for TEOS concentrations of 1-15 mM at 11.1 M water and 0.8 M DMA. The optical spectra of the core-shell silver-silica composite particles show a qualitative agreement with predictions by Mie theory.
科研通智能强力驱动
Strongly Powered by AbleSci AI