Nano Archive

Fabrication of optically tunable silica nanocapsules containing Ag/Au nanostructures by confined galvanic replacement reaction

Li, Haiqing and Ha, Chang-Sik and Kim, Il (2010) Fabrication of optically tunable silica nanocapsules containing Ag/Au nanostructures by confined galvanic replacement reaction. Journal of Nanoparticle Research, 12 (3). pp. 985-992.

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Abstract

Silica nanocapsules containing Ag/Au alloy nanostructures (SNCAs) are fabricated by galvanic replacement (GR) reactions between silver core nanoparticles within silica shells and aqueous HAuCl4 in a confined nano-space. The structure and morphology of the resulting SNCAs are diversified by controlling the relative amount of Ag/Au, exhibiting tunable optical absorptions in visible region. The GR reactions in a confined nano-space include alloying and de-alloying processes that determine the evolution of morphology and optical absorption of SNCAs. Graphical abstract Silica nanocapsules containing Ag/Au alloy nanostructures with tunable optical properties are fabricated by confined galvanic replacement reactions between silver core nanoparticles with silica shells and aqueous HAuCl4 in a confined nano-space.

Item Type:Article
ID Code:8460
Deposited By:Prof. Alexey Ivanov
Deposited On:05 Dec 2010 20:31
Last Modified:06 Dec 2010 11:26

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