期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 20, 期 -, 页码 1-3出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2012.03.029
关键词
Poly (3,4-ethylenedioxythiophene); Graphene; Direct electrochemistry; Electrochemical biosensor; Cytochrome c; Hydrogen peroxide
资金
- National 973 Basic Research Program [2012CB933804]
- National Natural Science Foundation of China [21035002]
- National Science Fund for Creative Research Groups [21121091]
- Natural Science Foundation of Jiangsu Province [BK2010009]
The direct electrochemistry of cytochrome c (Cyt c) embedded in a novel support matrix of graphene/poly (3,4-ethylenedioxythiophene) (G-PEDOT) nanocomposite on a glassy carbon electrode was studied. The prepared G-PEDOT nanocomposite is of good biocompatibility, enhanced electric conductivity and large specific surface area. The immobilized Cyt c in G-PEDOT matrix (graphene weight percentage<2%) displays excellent direct electrochemistry and retains its biocatalytic activity toward the reduction of hydrogen peroxide. The electrochemical signal shows a linear response to H2O2 in the concentration range from 5.0 x 10(-7) to 4.0 x 10(-4) M with a detection limit of 2.49 x 10(-7) M. The results demonstrate that the G-PEDOT nanocomposite offers a biocompatible material for the construction of biofuel cells, bioelectronics and biosensors. (c) 2012 Elsevier B.V. All rights reserved.
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