期刊
ELECTROCHIMICA ACTA
卷 99, 期 -, 页码 138-144出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2013.03.092
关键词
Nitrogen doped graphene; Gold nanoparticles; Chloramphenicol; Voltammetric analysis
资金
- National Natural Science Foundation of China [61172005]
- National High Technology Research and Development Program of China (863 Program) [2012AA06A304]
- Fundamental Research Funds for the Central Universities [2011TS062]
Nitrogen-doped graphene nanosheets decorated with gold nanoparticles (Au/N-G) were synthesized by the reduction of HAuCl4 on the surface of N-G using ethylene glycol as the reducing agent. The surface characterization with various techniques such as scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy showed that many gold nanoparticles were effectively loaded on the surface of N-G via the proposed synthesis process. The impedance analysis indicated that Au/N-G was an excellent electrode material possessing outstanding electrochemical features for electron transfer. Using Au/N-G modified electrode, the electrochemical response of chloramphenicol (CAP) was significantly increased due to the synergetic effect of two nanomaterials. Thus, a high-performance electrochemical sensor for CAP based on Au/N-G was developed. (C) 2013 Elsevier Ltd. All rights reserved.
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