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Title: Novel experiments with carbon nanotubes: opening, filling, closing and functionalizing nanotubes
Authors: Satishkumar, B C
Govindaraj, A
Mofokeng, J
Subbanna, G N
Rao, C N R
Keywords: acidic functional groups
Refluxing carbon nanotubes
room temperature
simple chemical
benzene vapour
functionalized nanotubes
Issue Date: 14-Nov-1996
Publisher: IOP Publishing Ltd
Citation: Journal of Physics B: Atomic, Molecular and Optical Physics 29(21), 4925-4934 (1996)
Abstract: Carbon nanotubes have been opened using a variety of oxidants including HF/BF3 and OsO4 at room temperature. The opened nanotubes have been filled with metals such as Ag, Au, Pd and Pt by simple chemical means. The opened nanotubes, containing a high concentration of acidic functional groups, get covered or closed by reaction with reagents such as ethylene glycol. The opened nanotubes can also be closed by treatment with benzene vapour in a reducing atmosphere of argon and hydrogen at high temperatures. Refluxing carbon nanotubes in a H2SO4-HNO3 mixture results in a clear colourless solution, which on removal of the Solvent and excess acid gives a white solid containing functionalized nanotubes. Neutralization of the acidic solution by alkali results in the precipitation of a brown solid containing nanotubes.
Description: Restricted Access
Other Identifiers: 0953-4075
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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