Facile Growth of Cu2O Nanowires on Reduced Graphene Sheets with High Nonenzymatic Electrocatalytic Activity Toward Glucose

Authors

  • Xiaoxia Feng,

    1. Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, China
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  • Changfa Guo,

    1. Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, China
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  • Liyuan Mao,

    1. Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, China
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  • Jiqiang Ning,

    1. Department of Physics and HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Hong Kong, China
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  • Yong Hu

    Corresponding author
    1. Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, China
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Abstract

In this work, we demonstrate the fabrication of a unique hybrid structure by directly growing ultrathin Cu2O nanowires (about 5 nm in diameter) onto reduced graphene oxide (rGO) sheets via a facile solvothermal method. This is a facile process carried out at 120°C for 6 h, in which only cupric acetate and rGO sheets are used as initiating materials, ethylene glycol as the solvent and reducing agent, and soldium acetate as precipitator, without employing any additional surfactant. Furthermore, the as-obtained nanocomposites-modified glassy carbon electrode (GCE) shows significantly improved electrochemical performance in nonenzymatic amperometric glucose detection, exhibiting the good linear behavior with glucose concentrations ranging from 10 μM to 0.1 mM with a high gradient of 80.17 μA/mM. More importantly, interference from the oxidation of common interfering species under physiological conditions, such as uric acid, dopamine, and ascorbic acid, is effectively avoided. Therefore, these nanocomposites may be a promising electrode material for the determination of glucose.

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