Journal
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
Volume 18, Issue 4, Pages 899-908Publisher
SPRINGER
DOI: 10.1007/s10008-013-2329-3
Keywords
Glucose; Single-walled carbon nanotubes; NiO nanobelts; Electrooxidation; Nonenzymatic sensor
Categories
Funding
- Program for NSFC [51072172, 51272219]
- RFDP [20124301110006]
- International Joint Research Program of Hunan Province [2013WK3036]
- Open Project of Hunan Provincial University Innovation Platform [12K050]
- Construct Program of the Key Discipline in Hunan Province
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In this study, we demonstrated a highly sensitive electrochemical sensor for the determination of glucose in alkaline aqueous solution by using nickel oxide single-walled carbon nanotube hybrid nanobelts (NiO-SWCNTs) modified glassy carbon electrode (GCE). The hybrid nanobelts were prepared by the deposition of SWCNTs onto the Ni(SO4)(0.3)(OH)(1.4) nanobelt surface, followed by heat treatment at different temperatures ranging from 400 A degrees C to 600 A degrees C. The NiO-SWCNTs hybrid nanobelts modified electrode prepared at 500 A degrees C displays enhanced electrocatalytic activity towards glucose oxidation, revealing a synergistic effect between the NiO and the deposited SWCNTs. The as-fabricated nonenzymatic glucose sensor exhibits excellent glucose sensitivity (2,980 mu A cm(-2) mM(-1)), lower detection limit (0.056 mu M, signal/noise [S/N] ratio = 3), and wider linear range (0.5-1,300 mu M). Moreover, the sensor has been successfully used for the assay of glucose in serum samples with good recovery, ranging from 96.4 % to 102.4 %.
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