Carbon nanotube/teflon composite electrochemical sensors and biosensors.

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  • Author(s): Wang J;Wang J; Musameh M
  • Source:
    Analytical chemistry [Anal Chem] 2003 May 01; Vol. 75 (9), pp. 2075-9.
  • Publication Type:
    Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: American Chemical Society Country of Publication: United States NLM ID: 0370536 Publication Model: Print Cited Medium: Print ISSN: 0003-2700 (Print) Linking ISSN: 00032700 NLM ISO Abbreviation: Anal Chem Subsets: MEDLINE
    • Publication Information:
      Original Publication: Washington, American Chemical Society.
    • Subject Terms:
      Biosensing Techniques* ; Polytetrafluoroethylene*; Electrochemistry/*instrumentation; Calibration ; Carbon ; Electrodes ; Nanotechnology
    • Abstract:
      The fabrication and attractive performance of carbon nanotube (CNT)/Teflon composite electrodes, based on the dispersion of CNT within a Teflon binder, are described. The resulting CNT/Teflon material brings new capabilities for electrochemical devices by combining the advantages of CNT and "bulk" composite electrodes. The electrocatalytic properties of CNT are not impaired by their association with the Teflon binder. The marked electrocatalytic activity toward hydrogen peroxide and NADH permits effective low-potential amperometric biosensing of glucose and ethanol, respectively, in connection with the incorporation of glucose oxidase and alcohol dehydrogenase/NAD(+) within the three-dimensional CNT/Teflon matrix. The accelerated electron transfer is coupled with minimization of surface fouling and surface renewability. These advantages of CNT-based composite devices are illustrated from comparison to their graphite/Teflon counterparts. The influence of the CNT loading upon the amperometric and voltammetric data, as well as the electrode resistance, is examined. SEM images offer insights into the nature of the CNT/Teflon surface. The preparation of CNT/Teflon composites overcomes a major obstacle for creating CNT-based biosensing devices and expands the scope of CNT-based electrochemical devices.
    • Accession Number:
      7440-44-0 (Carbon)
      9002-84-0 (Polytetrafluoroethylene)
    • Publication Date:
      Date Created: 20030502 Date Completed: 20030908 Latest Revision: 20061115
    • Publication Date:
      20231215
    • Accession Number:
      10.1021/ac030007+
    • Accession Number:
      12720343