Direct electrochemistry of glucose oxidase assembled on graphene and application to glucose detection

The direct electrochemistry of glucose oxidase integrated with graphene was investigated

Ping Wu; Qian Shao; Yaojuan Hu; Juan Jin; Yajing Yin; Hui Zhang; Chenxin Cai

2010

Scholarcy highlights

  • The direct electrochemistry of glucose oxidase integrated with graphene was investigated
  • The voltammetric results indicated that GOx assembled on graphene retained its native structure and bioactivity, exhibited a surface-confined process, and underwent effective direct electron transfer reaction with an apparent rate constant of 2.68 s−1
  • The assembled GOx could electrocatalyze the reduction of dissolved oxygen
  • Upon the addition of glucose, the reduction current decreased, which could be used for glucose detection with a high sensitivity, a wide linear range, and a low detection limit
  • The developed approach can efficiently exclude the interference of commonly coexisting electroactive species due to the use of a low detection potential
  • This study has successfully achieved DET reaction of GOx assembled on graphene, and established a novel approach for glucose detection and provided a general route for fabricating graphene-based biosensing platform via assembling enzymes/proteins on graphene surface
  • This study has successfully achieved direct electron transfer reaction of glucose oxidase assembled on graphene, and established a novel approach for glucose detection and provided a general route for fabricating graphene-based biosensing platform via assembling enzymes/proteins on graphene surface

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