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

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, HAu...

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Bibliographic Details
Published inKey engineering materials Vol. 789; pp. 1 - 5
Main Authors Kong, Yang, Cao, Xiao Wei, Shi, Hong Can
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 01.11.2018
Subjects
Gold
Hydroquinone
Morphology
Nanoparticles
Optical properties
Sea urchins
Seeds
Surface Plasmon Resonance
Sea Urchin-Like Gold Nanoparticles
Nile Blue A
Surface-Enhanced Raman Scattering
Gold Seeds
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Summary: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.
Bibliography:Selected, peer reviewed papers from the 3rd International Conference on Material Engineering and Application (3rd ICMEA 2018), August 10-12, 2018, Hong Kong, China
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.789.1