期刊
JOURNAL OF NON-CRYSTALLINE SOLIDS
卷 353, 期 11-12, 页码 1212-1215出版社
ELSEVIER
DOI: 10.1016/j.jnoncrysol.2007.01.005
关键词
nanoparticles, colloids and quantum structures; colloids; sol-gel, aerogel and solution chemistry
A novel synthesis method was described to prepare Au@SiO2 core-shell spheres, using a commercial gold colloid and tetraethyl orthosilicate as the precursors. The synthesis concept was based on surface modification of the gold nanoparticles with a binary system of surfactants, or using both of 2-Mercapto-ethanol and (3-Aminopropyl)-trimethoxysilane together, and the Stober processing. The shape and size, and silica coatings of the resultant particles were investigated by transmitting electron microscopy (TEM). The Au@silica core-shell spheres, each containing a single gold nanoparticle or an aggregate of several gold nanoparticles at the center, could be prepared. (c) 2007 Published by Elsevier B.V.
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