Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7140033 | Sensors and Actuators B: Chemical | 2018 | 8 Pages |
Abstract
In this study, a nano Ag-CuO/rGO (reduced graphene oxide) composite was designed and constructed as a novel nonenzymatic glucose sensor. The composite was fabricated through a one-step synthesis process. In the process, Ag-CuO with an average particle size of 10â¯nm formed and dispersed homogeneously on the surface of rGO sheets. When used for nonenzymatic glucose sensing, the resultant Ag-CuO/rGO composite showed a high sensitivity of 214.37â¯Î¼Aâ¯mMâ1â¯cmâ2 and an extremely wide linear response from 0.01 to 28â¯mM with a 0.76â¯Î¼M detection limit (S/Nâ¯=â¯3) at +0.6â¯V. The excellent sensing properties of the composite are probably due to the synergistic effect of the combination of Ag, CuO nanoparticles and rGO. The electron transfer is improved by the addition of Ag nanoparticles, and the composite electrode possesses larger surface area due to the rGO. The Ag-CuO/rGO composite doe not only show the good catalytic activity, excellent selectivity but also outstanding long term stability, good reproducibility, which makes it a novel type of composite for nonenzymatic glucose sensing.
Related Topics
Physical Sciences and Engineering
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Authors
Da Xu, Chengling Zhu, Xin Meng, Zhixin Chen, Yao Li, Di Zhang, Shenmin Zhu,