Defect engineering of the electrochemical characteristics of carbon nanotube varieties

Journal Article · Sun Aug 15 00:00:00 EDT 2010 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3457227· OSTI ID:21476408

Hoefer, Mark A; Bandaru, Prabhakar R ^[1]

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1. Department of Mechanical and Aerospace Engineering, Materials Science Program, University of California, San Diego, La Jolla, California 92093-0411 (United States)

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.

• OSTI ID: 21476408
• Journal Information: Journal of Applied Physics, Vol. 108, Issue 3; Other Information: DOI: 10.1063/1.3457227; (c) 2010 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
36 MATERIALS SCIENCE
ARGON IONS
CARBON
CHEMICAL ANALYSIS
CORRELATIONS
CRYSTAL DEFECTS
CRYSTALS
ELECTROCHEMISTRY
ION BEAMS
IRRADIATION
MODIFICATIONS
MORPHOLOGY
NANOTUBES
PHYSICAL RADIATION EFFECTS
RAMAN SPECTRA
RAMAN SPECTROSCOPY
SENSORS
VOLTAMETRY
BEAMS
CHARGED PARTICLES
CHEMISTRY
CRYSTAL STRUCTURE
ELEMENTS
IONS
LASER SPECTROSCOPY
NANOSTRUCTURES
NONMETALS
RADIATION EFFECTS
SPECTRA
SPECTROSCOPY