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Wall structure and surface chemistry of hydrothermal carbon nanofibres
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|Title: ||Wall structure and surface chemistry of hydrothermal carbon nanofibres|
|Authors: ||Ye, Haihui|
Naguib, Nevin N.
Gogotsi, Yury G.
Yazicioglu, Almila G.
Megaridis, Constantine M.
|Issue Date: ||Jan-2004 |
|Publisher: ||IOP Publishing|
|Citation: ||Nanotechnology, 15(1): pp. 232-236: Retrieved September 19, 2006 from http://nano.materials.drexel.edu/publications.html.|
|Abstract: ||A transmission electron microscopy examination of hydrothermally
produced carbon nanofibres/nanotubes with outer diameter 50–200 nm
suggests that the tube walls are inclined with respect to the tube axis. The
apex angles are in the range 8◦–16◦. The structure of these tubes and their
growth mechanism can be described by a conical-scroll model. The
conical-scroll structure enables functionalization of both inner and outer
tube surfaces. The outer wall of these nanofibres is shown to be covered by a
hair-like layer, with a characteristic length of about 0.5 nm. Electron energy
loss spectroscopy suggests that these ‘hairs’ are functional groups
containing oxygen and carbon. The presence of these groups on the tube
surface can account for the reported hydrophilic character of these tubes.|
|Appears in Collections:||Faculty Research and Publications (MSE)|
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