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Preparation of Graphene Oxide/CeO2-NiAl-Layered Double Hydroxide Composite for Cysteine Sensing

YUAN Aiguo, LI Bin, CHEN Jianping, JIN Guanping   

  1. 1. School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China;
    2. Shantou City Jiahe Biologic Technology Co. Ltd., Shantou 515021, China
  • Online:2016-07-25 Published:2016-07-26
  • Contact: JIN Guanping

Abstract:

Graphene oxide/CeO2-NiAl-layered double hydroxide composite (GO/CeO2-NiAl-LDHs) was prepared using a
urea hydrolysis method and characterized by Fourier transform infrared (FT-IR) spectroscopy, X-Ray diffraction (XRD),
field emission scanning electron microscopy (FE-SEM) and electrochemical techniques. GO/CeO2-NiAl-LDHs showed good
electrochemical activity with an obvious layered structure. A sensor of L-cysteine (Cys) was fabricated using GO/CeO2-
NiAl-LDHs modified paraffin-impregnated graphite electrode (GO/CeO2-NiAl-LDHs/WGE). The oxidation peak currents
depending on the concentrations showed a good linear relationship in a range of 3 × 10-7 - 1 × 10-6 mol/L. The sensor could
be used for Cys sensing in real samples.

Key words: graphene oxide, layered double hydroxide, electrochemical determination, Cys

CLC Number: