Sea Urchin-Like Gold Nanoparticles: Controllable Preparation and SERS Properties

Xiao Wei Cao; Yang Kong; Hong Can Shi

doi:10.4028/www.scientific.net/KEM.789.1

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Sea Urchin-Like Gold Nanoparticles: Controllable Preparation and SERS Properties
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 789Sea Urchin-Like Gold Nanoparticles: Controllable...

Sea Urchin-Like Gold Nanoparticles: Controllable Preparation and SERS Properties

Abstract:

Here, we report on a seed-mediated growth method for the production of goldnanoparticles that have a number (>4) of branches ultimately resembling the shape of sea urchins.These nano-urchins are produced in high yield and exhibit unique optical properties. By altering theamount of gold seeds, HAuCl4 and hydroquinone in the reaction system, we managed to tune thesize of the SGNPs from 40 to 180 nm. Their extinction spectrum shows a shift in the plasmonresonance from 550 to 670 nm. The SERS spectrum of these products prepared were detected andcompared. By optimizing the conditions, SGNPs with uniform morphology, good monodispersityand strong SERS effect were prepared.

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Periodical:

Key Engineering Materials (Volume 789)

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1-5

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https://doi.org/10.4028/www.scientific.net/KEM.789.1

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Online since:

November 2018

Authors:

Xiao Wei Cao*, Yang Kong, Hong Can Shi

Keywords:

Gold Seeds, Nile Blue A, Sea Urchin-Like Gold Nanoparticles, Surface Plasmon Resonance, Surface-Enhanced Raman Scattering

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