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Facile growth of Cu2O hollow cubes on reduced graphene oxide with remarkable electrocatalytic performance for non-enzymatic glucose detection

Abstract

In this work, cuprous oxide (Cu2O) hollow cubes were synthesized on reduced graphene oxide (RGO) nanosheets by a facile one-pot refluxing approach. The as-prepared Cu2O/RGO nanocomposites were characterized by X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, and transmission electron microscopy. It was revealed that Cu2O with well-defined hollow cubic morphology is homogeneously dispersed on the surface of RGO nanosheets. The electrocatalytic properties of the Cu2O/RGO nanocomposites for glucose oxidation were investigated by cyclic voltammetry and chronoamperometry. It was found that the constructed glucose sensor has a wide linear range of 0.01-9.0 mM (R2 = 0.996) with high sensitivity of 813.713 μA cm-2 mM-1 and low detection limit of 0.44 μM based on signal/noise = 3. Compared to bare Cu2O and previously reported Cu2O-based glucose sensors, the as-prepared Cu2O/RGO nanocomposite glucose sensor showed remarkably enhanced electrocatalytic activity. In addition, the electrode also exhibited an excellent anti-interference ability. The excellent electrocatalytic performance together with the simple and low-cost preparation makes Cu2O/RGO nanocomposites be attractive in glucose sensor application.

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Publication details

The article was received on 02 Jun 2017, accepted on 10 Jul 2017 and first published on 14 Jul 2017


Article type: Paper
DOI: 10.1039/C7NJ01952A
Citation: New J. Chem., 2017, Accepted Manuscript
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    Facile growth of Cu2O hollow cubes on reduced graphene oxide with remarkable electrocatalytic performance for non-enzymatic glucose detection

    Y. Q. Wang, Z. Y. Ji, X. P. Shen, G. Zhu, J. Wang and X. Y. Yue, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ01952A

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