期刊
RSC ADVANCES
卷 6, 期 109, 页码 107851-107858出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra22264a
关键词
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资金
- National Natural Science Foundation of China [51373111]
- Local and State Joint Engineering Laboratory for the Priority Academic Program Development (PAPD)
- Novel Functional Polymeric Materials of Jiangsu Higher Education Institutions
A hybrid nanostructure of Au-Ag nanorings prepared by decorating the surface of N-doped graphene (NG) was utilized as an electrocatalyst to construct a novel electrochemical sensor. Transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) were used to characterize the as-prepared composites. The Au-Ag nanorings/NG modified electrode exhibited a much better electrochemical response of rutin than that of Au/NG, Ag/NG and NG due to the synergetic catalytic effect between the Au-Ag nanorings and NG. Under optimal conditions, the electrochemical sensor of the Au-Ag nanorings/NG exhibited a wide linear range from 0.05 mu M to 241.2 mu M (S/N = 3) with a low detection limit of 0.01 mu M. In addition, the proposed sensor also displayed good anti-interference ability and long-term stability, which had promising applications in bioassay analysis.
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