Oxidation, Deformation and Destruction of Carbon Nanotubes in Aqueous Ceric Sulfate

DOIResolve DOI: http://doi.org/10.1021/jp0454422
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Pages14001407; # of pages: 8
AbstractA simple wet chemical method involving only ultrasonic processing in dilute ceric sulfate (CS) was used to functionalize carbon nanotubes (CNTs). Unexpectedly, single-walled and multiwalled carbon nanotubes (SWCNTs and MWCNTs) were cut, oxidized, and disintegrated by sonication in 0.1 N CS for 2-5 h. Transmission electron microscopy (TEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction spectroscopy (XRD), Raman scattering, and photoacoustic Fourier transform infrared spectroscopy (FTIR) were used to probe wall damage during the chemical processing. Cyclic voltammetry and impedance spectroscopy were used to evaluate the conductivity of the CS-treated CNTs. This one-step process resulted in the destruction of SWCNTs to produce nonconducting amorphous carbon. MWCNTs were oxidized and converted to graphitic materials and amorphous carbon with retained conductivity.
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AffiliationNRC Biotechnology Research Institute; National Research Council Canada; NRC Institute for Chemical Process and Environmental Technology; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
NRC number47230
NPARC number3538768
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Record identifierd1b93bc7-31b6-443e-8d60-afaa18366bab
Record created2009-03-01
Record modified2016-05-09
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