期刊
ACS OMEGA
卷 3, 期 3, 页码 3420-3428出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.7b01197
关键词
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资金
- Major State Basic Research Development Program of China (973 Program) [2014CB046701]
- National Natural Science Foundation of China [51601114, 51771117]
- Collaborative Innovation Center for Advanced Ship and deep-Sea Exploration
Cu has recently received great interest as a potential candidate for glucose sensing to overcome the problems with noble metals. In this work, reduced graphene oxide-encapsulated Cu nanoparticles (Cu@RGO) have been prepared via an electrostatic self-assembly method. This core/shell composites were found to be more stable than conventional Cu-decorated graphene composites and bare copper nanoparticles in an air atmosphere because the graphene shell can effectively protect the Cu nanoparticles from oxidation. In addition, the obtained Cu@RGO composites also showed an outstanding electrocatalytic activity toward glucose oxidation with a wide linear detection range of 1 mu M to 2 mM, low detection limit of 0.34 mu M (S/N = 3), and a sensitivity of 150 mu A mM(-1) cm(-2). Moreover, Cu@RGO composites exhibited a satisfactory reproducibility, selectivity, and long effective performance. These excellent properties indicated that Cu@RGO nanoparticles have great potential application in glucose detection.
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