Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 236, Issue -, Pages 326-333Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.06.020
Keywords
Copper oxide nanostructures; In-situ growth; Glucose; Non-enzymatic biosensor
Funding
- National Science Foundation of China [51275195]
- National Basic Research Program of China [2015CB057205]
- Program for Changjiang Scholars
- Innovative Research Team in University [IRT13017]
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Different nanostructures of copper oxide (CuO) by in-situ growth on carbon clothes (CC) are prepared to develop ultrasensitive non-enzymatic glucose sensors. The electrochemical performance of the CuO-based electrodes for detecting glucose has been investigated by cyclic voltammetry (CV) and chronoamperometry. The CuO nanosheets (CuO NSs)/CC electrode demonstrates a high sensitivity of 4902 mu A mM(-1) cm(-2) at an applied potential of 0.55 V (vs. Ag/AgCl/3 M KCl) in alkaline solution, and it shows 2973 mu A mM(-1) cm(-2) and 1246 mu A mM(-1) cm(-2) for the CuO nanowires (CuO NWs)/CC and CuO nanoparticles (CuO NPs)/CC, respectively. Ascribing to high conductivity of CC, high specific surface-area from CuO nanostructures, and facilitated charge transfer through in-situ grown structure, the electrodes demonstrate ultrasensitive, selective, stable and fast amperometric sensing (<3 s) of glucose, which presents a new strategy to develop non-enzymatic glucose sensors. (C) 2016 Elsevier B.V. All Rights reserved.
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