Synthesis of Tubular Gold and Silver Nanoshells Using Silica Nanowire Core Templates

Synthesis of Tubular Gold and Silver Nanoshells Using Silica Nanowire Core Templates

We report the synthesis of tubular gold and silver nanoshells on silica nanowire core templates in solution. Silica nanowires were synthesized and characterized with optical and NMR methods. Gold nanoparticle seeds (2 to 3 nm) with weak repulsive surfactants such as tetrakis-hydroxymethyl-phosphoniu...

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Veröffentlicht in:Langmuir 2006-07, Vol.22 (14), p.6367-6374
Hauptverfasser: Qu, Yongquan, Porter, Rhiannon, Shan, Fang, Carter, Joshua D, Guo, Ting
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Sprache:eng
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Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Physical and chemical studies. Granulometry. Electrokinetic phenomena
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container_issue 14
container_start_page 6367
container_title Langmuir
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creator Qu, Yongquan
Porter, Rhiannon
Shan, Fang
Carter, Joshua D
Guo, Ting
description We report the synthesis of tubular gold and silver nanoshells on silica nanowire core templates in solution. Silica nanowires were synthesized and characterized with optical and NMR methods. Gold nanoparticle seeds (2 to 3 nm) with weak repulsive surfactants such as tetrakis-hydroxymethyl-phosphonium chloride (THPC) were conjugated to the surface of these nanowires. A regrowth process was initiated from these nanoparticles on the surface of the silica nanowires dispersed in gold or silver stock solutions in the presence of reducing agents. Micrometers-long gold and silver tubular nanoshells (80−150 nm o.d.) were made, fully covering the silica nanowires.
doi_str_mv 10.1021/la060359m
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subjects Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Physical and chemical studies. Granulometry. Electrokinetic phenomena
title Synthesis of Tubular Gold and Silver Nanoshells Using Silica Nanowire Core Templates
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