Electrocatalytic oxidation behavior of guanosine at graphene, chitosan and Fe3O4 nanoparticles modified glassy carbon electrode and its determination

A graphene, chitosan and Fe3O4 nanoparticles modified glassy carbon electrode was fabricated

Huanshun Yin; Yunlei Zhou; Qiang Ma; Shiyun Ai; Quanpeng Chen; Lusheng Zhu

2010

Scholarcy highlights

  • A graphene, chitosan and Fe3O4 nanoparticles modified glassy carbon electrode was fabricated
  • The modified electrode was characterized by scanning electron microscope and electrochemical impedance spectroscopy
  • The electrochemical oxidation behavior of guanosine was investigated in pH 7.0 phosphate buffer solution by cyclic voltammetry and differential pulse voltammetry
  • The experimental results indicated that the modified electrode exhibited an electrocatalytic and adsorptive activities towards the oxidation of guanosine
  • The proposed method was further applied to determine guanosine in spiked urine samples and traditional Chinese medicines with satisfactory results

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