期刊
COLLOIDS AND SURFACES B-BIOINTERFACES
卷 102, 期 -, 页码 307-311出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfb.2012.08.003
关键词
Ordered mesoporous carbon; Glucose; Nickel oxide nanoparticles; Electrodeposition; Nonenzymatic sensor
资金
- National Natural Science Foundation of China [10804067, 20975066, 61171033]
- Leading Academic Discipline Project of Shanghai Municipal Education Commission [J50102]
- Graduate Innovation Foundation of Shanghai University [SHUCX120114]
A highly sensitive and selective nonenzymatic glucose sensor based on electrodepositing NiO nanopartides on ordered mesoporous carbon (named as NiO/OMC) modified glassy carbon electrode (GCE) was constructed. The synthesized OMC was characterized by X-ray diffraction, and the morphology images of OmC nanoparticle and NiO/OMC nanocomposite were characterized by scanning electron microscope. Electrochemical behaviors of glucose at the NiO/OMC/GCE were investigated by cyclic voltammetry and amperometry, and the modified electrode showed excellent electrochemical activity toward the oxidation of glucose. At the optimum conditions, the calibration curve for glucose determination was linear in the range of 2-1000 mu M with a fast response time (<2 s), and a high sensitivity of 834.8 mu A mM(-1) cm(-2) and a low detection limit (S/N = 3) of 0.65 mu M were obtained. In addition, the proposed sensor was successfully applied to analyze glucose level in human blood serum samples. (c) 2012 Elsevier B.V. All rights reserved.
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