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Hydrothermal fabrication of hierarchical CuO nanoflowers for dual-function amperometric sensing of hydrogen peroxide and glucose

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Abstract

In this paper, hierarchical CuO nanoflowers were prepared by a facile, controllable and low-cost method. The structure and morphology of the CuO nanoflowers were characterized by scanning electron microscopy, X-ray diffraction spectroscopy, nitrogen adsorption–desorption isotherm and X-ray photoelectron spectroscopy measurements. CuO nanoflowers were then immobilized on the surface of a glassy carbon electrode to develop a nonenzymatic sensor for simultaneous detection of hydrogen peroxide and glucose. Electrochemical measurements demonstrated that the sensor showed good response toward H2O2 with a high sensitivity of 956.69 μA mM−1 cm−2 and a wide linear range of 0.005–14.07 mM. Moreover, the nonenzymatic sensor also exhibited excellent electrocatalytic activity toward glucose oxidation with a high sensitivity of 1086.34 μA mM−1 cm−2 and a low detection limit of 0.12 μM (S/N = 3). This study paves a new way for the construction of nonenzymatic sensors.

Graphical abstract: Hydrothermal fabrication of hierarchical CuO nanoflowers for dual-function amperometric sensing of hydrogen peroxide and glucose

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Publication details

The article was received on 17 Aug 2019, accepted on 28 Oct 2019 and first published on 29 Oct 2019


Article type: Paper
DOI: 10.1039/C9NJ04236A
New J. Chem., 2019, Advance Article

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    Hydrothermal fabrication of hierarchical CuO nanoflowers for dual-function amperometric sensing of hydrogen peroxide and glucose

    Y. Ni, Z. Sun, Z. Zeng, F. Liu and J. Qin, New J. Chem., 2019, Advance Article , DOI: 10.1039/C9NJ04236A

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