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

作者：Zhu, Yan^*; Liao, Fan; Gao, Suning; Gao, Aimin; Lu, Shunkai; Shao, Mingwang

来源：Journal of the Electrochemical Society, 2014, 161(12): B265-B268.

DOI：10.1149/2.0821412jes

• ELECTROCHEMICAL OXIDATION
• METAL NANOPARTICLES
• OPTICAL-PROPERTIES
• ROUTE
• FILMS
• AG

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 mu M to 16 mM, and the limit of detection was estimated to be 14.2 mu M. The surface-enhanced Raman scattering (SERS) activity of the synthesized AuNPs was also investigated, which showed excellent SERS enhancement in the low concentration detection (1x10(-7) M) of Rhodamine 6G solution with an enhancement factor of 1.4 x 10(6).

• 出版日期2014
• 单位苏州大学