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Journal of electroanalytical chemistry v.785, 2017년, pp.172 - 179   SCI SCIE
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Facile synthesis of layered CuS/RGO/CuS nanocomposite on Cu foam for ultrasensitive nonenzymatic detection of glucose

Zhao, Chongjun (Corresponding author. ) ; Wu, Xian ; Zhang, Xiaojuan ; Li, Pengwei ; Qian, Xiuzhen ;
  • 초록  

    Abstract A novel ultrasensitive nonenzymatic sensor was prepared by in-situ growing layered CuS/RGO/CuS (reduced graphene oxide, RGO) nanostructure on the Cu foam surface through a hydrotherm-assisted process. The CuS/RGO/CuS nanocomposite was characterized with X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectrometer (XPS) and field emission scanning electron microscopy (FESEM). This CuS/RGO/CuS/Cu was directly used as electrochemical sensor of glucose, and its performance was evaluated by cyclic voltammetry and amperometry techniques. The nonenzymatic biosensor exhibited ultrahigh linear sensitivities of 22.67 and 10.54mAmM −1 cm −2 in the concentration ranges of 1–655μM and 0.655–1.055mM, respectively. The detection limit was determined to be 0.5μM with the signal-to-noise of three. Furthermore the sensor showed good long-term stability and good performance in human blood analysis. The present work gives a new insight into facile preparation of metal sulfides/RGO/metal sulfides nanocomposite on its metal substrate and its potential application in nonenzymatic glucose sensor. Highlights Laminar-like CuS/RGO/CuS nanocomposite in-situ grown on Cu foam through a one-step hydrothermal process CuS/RGO/CuS/Cu electrochemical sensor with ultrahigh-sensitivity and low detection limit Glucose in blood was determined. Graphical abstract CuS/RGO/CuS nanocomposite of lamellar structure was in-situ -grown on Cu foam through a one-pot hydrothermal approach. As-prepared CuS/RGO/CuS/Cu was directly served as a nonenzymatic glucose sensor with an ultrahigh sensitivity. [DISPLAY OMISSION]


  • 주제어

    CuS/RGO/CuS .   Nonenzymatic sensor .   Glucose .   Graphene oxide (GO) .   Reduced graphene oxide (RGO) .   Cu foam.  

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