Additive-Free Gold Nanoparticles Synthesized by Gamma-Ray Irradiation: Applications in Electrocatalysis and Surface-Enhanced Raman Scattering

Additive-free gold nanoparticles (AuNPs) were successfully synthesized by gamma ray irradiation in aqueous solution using HAuCl4 as precursor. The size was optimized by regulating the concentration of HAuCl4 and the dose of irradiation. The electrocatalytic performance of AuNPs for the oxidation of...

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Bibliographic Details
Published in:Journal of the Electrochemical Society 2014-01, Vol.161 (12), p.B265-B268
Main Authors: Zhu, Yan, Liao, Fan, Gao, Suning, Gao, Aimin, Lu, Shunkai, Shao, Mingwang
Format: Article
Language:English
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Summary:Additive-free gold nanoparticles (AuNPs) were successfully synthesized by gamma ray irradiation in aqueous solution using HAuCl4 as precursor. The size was optimized by regulating the concentration of HAuCl4 and the dose of irradiation. The electrocatalytic performance of AuNPs for the oxidation of glucose was demonstrated. The obtained AuNPs displayed superior electrocatalysis for the oxidation of glucose with a linear response range from 50 μM to 16 mM, and the limit of detection was estimated to be 14.2 μM. The surface-enhanced Raman scattering (SERS) activity of the synthesized AuNPs was also investigated, which showed excellent SERS enhancement in the low concentration detection (1 × 10−7 M) of Rhodamine 6G solution with an enhancement factor of 1.4 × 106.
ISSN:0013-4651
1945-7111
DOI:10.1149/2.0821412jes