Journal
BIOSENSORS & BIOELECTRONICS
Volume 66, Issue -, Pages 308-315Publisher
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2014.11.040
Keywords
Spinel-type MnCo2O4; Graphene; Nanofibers; Electrospinning; Electrocatalysis
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Funding
- National Natural Science Foundation of China [21271127, 61171033]
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Graphene decorated MnCo2O4 composite nanofibers (GMCFs) were synthesized by electrospinning and subsequent calcination in an Ar atmosphere. The structural and morphological characterizations of GMCFs were performed using X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, energy-dispersive spectroscopy, scanning electron microscopy and transmission electron microscopy. The synthesized GMCFs combine the catalytic activity of spinel-type MnCo2O4 with the remarkable conductivity of graphene. In addition, electrospinning can process MnCo2O4 materials into nanosized architectures with large surface area to prevent magnetic nanoparticles from aggregating. The obtained GMCFs were applied as a novel platform for glucose biosensing. Electrochemical studies show that the developed biosensor exhibits excellent electrocatalytic activity towards glucose oxidation over a wide linear range of 0.005-800 mu M with a low detection limit of 0.001 mu M. (C) 2014 Elsevier B.V. All rights reserved.
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