Graphene Nanoplatelets: Electrochemical Properties and Applications for Oxidation of Endocrine-Disrupting Chemicals

Authors

  • Prof. Qijin Wan,

    Corresponding author
    1. School of Chemical Engineering & Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Lab of Novel Reactor & Green Chemical Technology, Wuhan Institute of Technology, Xiongchu Street 693, Wuhan 430073 (P. R. China), Fax: (+86) 2787194511
    • Qijin Wan, School of Chemical Engineering & Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Lab of Novel Reactor & Green Chemical Technology, Wuhan Institute of Technology, Xiongchu Street 693, Wuhan 430073 (P. R. China), Fax: (+86) 2787194511

      Nianjun Yang, Department of Micro and Nano Sensors, Fraunhofer Institute for Applied Solid State Physics (IAF), Tullastrasse 72, Freiburg 79108 (Germany), Fax: (+49) 761515971647

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  • Hui Cai,

    1. School of Chemical Engineering & Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Lab of Novel Reactor & Green Chemical Technology, Wuhan Institute of Technology, Xiongchu Street 693, Wuhan 430073 (P. R. China), Fax: (+86) 2787194511
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  • Yi Liu,

    1. School of Chemical Engineering & Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Lab of Novel Reactor & Green Chemical Technology, Wuhan Institute of Technology, Xiongchu Street 693, Wuhan 430073 (P. R. China), Fax: (+86) 2787194511
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  • Hongtu Song,

    1. School of Chemical Engineering & Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Lab of Novel Reactor & Green Chemical Technology, Wuhan Institute of Technology, Xiongchu Street 693, Wuhan 430073 (P. R. China), Fax: (+86) 2787194511
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  • Hualing Liao,

    1. School of Chemical Engineering & Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Lab of Novel Reactor & Green Chemical Technology, Wuhan Institute of Technology, Xiongchu Street 693, Wuhan 430073 (P. R. China), Fax: (+86) 2787194511
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  • Prof. Shantang Liu,

    1. School of Chemical Engineering & Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Lab of Novel Reactor & Green Chemical Technology, Wuhan Institute of Technology, Xiongchu Street 693, Wuhan 430073 (P. R. China), Fax: (+86) 2787194511
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  • Dr. Nianjun Yang

    Corresponding author
    1. Department of Micro and Nano Sensors, Fraunhofer Institute for Applied Solid State Physics (IAF), Tullastrasse 72, Freiburg 79108 (Germany), Fax: (+49) 761515971647
    • Qijin Wan, School of Chemical Engineering & Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Lab of Novel Reactor & Green Chemical Technology, Wuhan Institute of Technology, Xiongchu Street 693, Wuhan 430073 (P. R. China), Fax: (+86) 2787194511

      Nianjun Yang, Department of Micro and Nano Sensors, Fraunhofer Institute for Applied Solid State Physics (IAF), Tullastrasse 72, Freiburg 79108 (Germany), Fax: (+49) 761515971647

    Search for more papers by this author

Abstract

In most graphene-based electrochemical applications, graphene nanoplatelets (GNPs) have been applied. Now, for the first time, electrochemical properties of GNPs, namely, its electrochemical activity, potential window, and double-layer capacitance, have been investigated. These properties are compared with those of carbon nanotubes (CNTs). GNP- and CNT-coated electrodes were then applied for electrochemical oxidation of endocrine-disrupting chemicals. The GNP-coated electrode was characterized by atomic force microscopy and electrochemical techniques. Compared with the CNT-coated electrode, higher peak current for the oxidation of 4-nonylphenol is achieved on the GNP-coated electrode, together with lower capacitive current. Electrochemical oxidation of 2,4-dichlorophenol, bisphenol A, and octylphenol in the absence or presence of 4-nonylphenol was studied on the GNP-coated electrode. The results suggest that GNPs have better electrochemical performance than CNTs and are thus more promising for electrochemical applications, for example, electrochemical detection and removal of endocrine-disrupting chemicals.

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