Vi. Kodolov et al., Investigation of metal-carbon tubulenes by x-ray photoelectron spectroscopy and electron microscopy, SURF INT AN, 32(1), 2001, pp. 10-14
Two types of methods for creating metal-carbon tubulenes are applied:
(1) dehydropolycondensation and stimulated carbonization of aromatic compou
nds in active media containing metal powders and metal ions;
(2) dehydration, dehydropolycondensation and stimulated carbonization of po
lyfunctional polymer (polyvinyl alcohol) in analogous active media.
The possibility of tubulene formation is determined by means of quantum che
mical calculation.
To study the structure of the substances formed, various experimental metho
ds, including x-ray photoelectron spectroscopy and electron microscopy, are
used.
In accordance with the experimental results, especially the x-ray photoelec
tron spectra, the structural features of the tubulenes obtained are determi
ned from the chemical structures of the hydrocarbons, the functional groups
of the polymer and the properties of the active media and metal dispersity
.
The investigation by electron microscopy confirms the formation of cylindri
cal carbon tubulenes containing alternate metal corpuscles in a composite i
nner pattern as a result of response-stimulated dehydropolycondensation and
stimulated carbonization. Thus, the method applied is suitable for obtaini
ng cylindrical carbon nanostructures containing metals. Copyright (C) 2001
John Wiley & Sons, Ltd.