期刊
ANALYTICA CHIMICA ACTA
卷 893, 期 -, 页码 41-48出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2015.08.042
关键词
Graphene; Au nanoparticles; Sunset Yellow; Electrochemical determination
资金
- National Natural Science Foundation of China [51373111]
- Suzhou Nano-project [ZXG2012022]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Project of Scientific and Technologic Infrastructure of Suzhou [SZS201207]
An electrochemical sensor was prepared using Au nanoparticles and reduced graphene successfully decorated on the glassy carbon electrode (Au/RGO/GCE) through an electrochemical method which was applied to detect Sunset Yellow (SY). The as-prepared electrode was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), atomic force microscopy (AFM) and electrochemical measurements. The results of cyclic voltammetry (CV) proved that Au/RGO/GCE had the highest catalytic activity for the oxidation of SY as compared with GCE, Au/GCE, and RGO/GCE. Differential pulse voltammetry (DPV) showed that the linear calibration curves for SY on Au/RGO/GCE in the range of 0.002 mu M-109.14 mu M, and the detection limit was estimated to be 2 nM (S/N = 3). These results suggested that the obtained Au/RGO/GCE was applied to detect SY with high sensitivity, low detection limit and good stability, which provided a promising future for the development of portable sensor in food additives. (C)2015 Elsevier B.V. All rights reserved.
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