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- Title
Construction of a non-enzymatic glucose sensor based on copper nanoparticles/poly( o-phenylenediamine) nanocomposites.
- Authors
Liu, Lin; Chen, Yuxing; Lv, Hongying; Wang, Guoxiu; Hu, Xiaoya; Wang, Chengyin
- Abstract
An electrochemical non-enzymatic glucose sensor was fabricated by electrodeposition of copper nanoparticles (CuNPs) onto a poly( o-phenylenediamine) (PoPD) film-modified glassy carbon electrode (CuNPs/PoPD/GCE). We had studied some factors such as the pH value of supporting electrolyte, the amount of PoPD and applied potentials and optimize the experiment conditions. Under the optimum conditions, the as-obtained sensor for glucose sensing had achieved a wide linear range, low detection limit, and fast response time. The current response of the as-obtained sensor towards electrochemical oxidation of glucose was linear with the concentration of glucose in the range of 5.0 μM to 1.6 mM ( R = 0.998) in the solution of 0.1 M NaOH at the applied potential of 0.5 V. The detection limit is 0.25 μM and the fast response achieves within 1 s. The sensor exhibits good sensitivity, selectivity, and reproducibility. The proposed non-enzymatic glucose was successfully employed to determine glucose in blood samples.
- Subjects
BIOSENSORS; COPPER; GLUCOSE; NANOPARTICLES; CARBON electrodes; CHRONOAMPEROMETRY
- Publication
Journal of Solid State Electrochemistry, 2015, Vol 19, Issue 3, p731
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-014-2659-9