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Defect engineering of the electrochemical characteristics of carbon nanotube varieties

Journal of Applied Physics, ISSN: 0021-8979, Vol: 108, Issue: 3
2010
  • 22
    Citations
  • 0
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  • 24
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Metrics Details

  • Citations
    22
    • Citation Indexes
      22
  • Captures
    24

Article Description

The electrochemical behavior of carbon nanotubes (CNTs) containing both intrinsic and extrinsically introduced defects has been investigated through the study of bamboo and hollow multiwalled CNT morphologies. The controlled addition of argon ions was used for varying the charge and type of extrinsic defects. It was indicated from Raman spectroscopy and voltammetry that the electrocatalytic response of hollow type CNTs could be tailored more significantly, compared to bamboo type CNTs which have innately high reactive site densities and are less amenable to modification. An in-plane correlation length parameter was used to understand the variation of the defect density as a function of argon ion irradiation. The work has implications in the design of nanotube based chemical sensors, facilitated through the introduction of suitable reactive sites. © 2010 American Institute of Physics.

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