In situ growth cupric oxide nanoparticles on carbon nanofibers for sensitive nonenzymatic sensing of glucose

•CuO nanoparticles were directly and homogeneously grown on carbon nanofibers.•The obtained nanocomposite showed high electrooxidize activity to glucose.•A nonenzymatic glucose sensor was constructed based on the functional nanocomposite.•This sensor showed good performance to glucose.•The proposed...

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Bibliographic Details
Published in:Electrochimica acta 2013-08, Vol.105, p.433-438
Main Authors: Zhang, Jing, Zhu, Xiaoli, Dong, Haifeng, Zhang, Xueji, Wang, Wenchang, Chen, Zhidong
Format: Article
Language:English
Subjects:
Carbon fibers
Carbon nanofibers
COMPOSITES
COPPER OXIDE
CUPRIC OXIDE
Cupric oxide nanoparticles
Detection
Electrodes
FIBERS
Glucose
MICROSTRUCTURES
Nanocomposites
Nanofibers
Nanomaterials
Nanostructure
Nonenzyme
OXIDES
PARTICLES
Sensor
Sensors
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Summary:•CuO nanoparticles were directly and homogeneously grown on carbon nanofibers.•The obtained nanocomposite showed high electrooxidize activity to glucose.•A nonenzymatic glucose sensor was constructed based on the functional nanocomposite.•This sensor showed good performance to glucose.•The proposed sensor was successfully applied in detection of glucose in blood serum. A novel method was employed to directly and homogeneously attaching cupric oxide nanoparticles (CuONPs) on carbon nanofibers (CNFs) for sensitive amperometric nonenzymatic sensing of glucose. The obtained CuONPs-CNFs nanocomposite was characterized by transmission electron microscopy and X-ray diffraction. The CuONPs-CNFs nanocomposite modified glassy carbon electrode showed high electrocatalytic activity toward the oxidation of glucose in alkaline media and a nonenzymatic glucose sensor was constructed based on the functional nanocomposite modified electrode. Under optimal experimental conditions, the designed sensor exhibited a wide linear response to glucose ranging from 5.0×10−7 to 1.1×10−2M with a high sensitivity of 2739μAmM−1cm−2 and a low detection limit down to 0.2μM at the signal to noise ratio of 3. This sensor showed good accuracy, acceptable precision and reproducibility. Moreover, the proposed sensor was successfully applied in the detection of glucose in human blood serum indicating its possibility in practical application.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2013.04.169