Chemical Research in Chinese Universities

, Volume 34, Issue 6, pp 971–977 | Cite as

Stripping Voltammetric Analysis of Mercury at Base-treated Graphene Oxide Electrodes

  • Yaru Qiu
  • Lini Dong
  • Dong Xiang
  • Li Li
  • Liande ZhuEmail author


According to the Rourke’s model, graphene oxide(GO) synthesized from the oxidation of graphite actually consisted of partly oxidized graphene sheets and highly oxidized debris(OD). The OD was strongly adhered to the surface of graphene sheets, while they could be facilely removed by a base-washing procedure. The existence and removal by base-washing of OD were characterized by means of thermogravimetric analysis(TGA), FTIR spectroscopy, X-ray photoelectron spectroscopy(XPS), transmission electron microscopy(TEM) and Raman spectroscopy. The adsorption of OD not only made a great difference to the physical and chemical properties of GO, but also affected its electrochemical behavior when it was employed as an electrode material. In this article, we demonstrated that the electrochemical deposition and the subsequent voltammetric stripping analysis of mercury were significantly influenced by the presence of OD. The consequence suggests that the presence of OD on the sheets of GO restricts the electrochemical deposition behavior of mercury and further lowers the sensitivity of the voltammetric stripping responses. The sensitivity was observed as 0.78 A L mol‒1 at base-washed(bw)-GO/GC(glassy carbon) better than that at as-prepared GO(a-GO)/GC for 0.28 A L mol‒1. The limit of detection was calculated as 2.95 and 0.83 μmol/L before and after removing the OD, respectively. The availability of both electrodes was evaluated by detecting Hg2+ in lake water specimens using standard samples recovery.


Graphene oxide Oxide debris Stripping voltammetry Mercury 


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Copyright information

© Jilin University, The Editorial Department of Chemical Research in Chinese Universities and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Yaru Qiu
    • 1
  • Lini Dong
    • 1
  • Dong Xiang
    • 1
  • Li Li
    • 1
  • Liande Zhu
    • 1
    Email author
  1. 1.Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, School of ChemistryNortheast Normal UniversityChangchunP. R. China

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