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Morphology of Nanoparticles and Fullerene Blacks Produced in A Carbon Arc

Published online by Cambridge University Press:  15 February 2011

John Henry J. Scott ,
S. A. Majetich  and
S. Derrington
John Henry J. Scott
Affiliation:
Department of PhysicsCarnegie Mellon University, Pittsburgh, PA 15213
S. A. Majetich*
Affiliation:
Department of PhysicsCarnegie Mellon University, Pittsburgh, PA 15213
S. Derrington
Affiliation:
Department of Materials Science and EngineeringCarnegie Mellon University, Pittsburgh, PA 15213
*
Author to whom correspondence should be addressed
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Abstract

Using X-ray powder diffraction and transmission electron microscopy we examine the morphology and crystallographic structure of carbon-coated nanoparticles produced in a modified Huffman-Kratschmer carbon arc process. Graphite rods containing Ho were consumed in the arc and soots sampled from both the reactor walls and the inner core of the cathode deposit are compared. The inner core soot displays increased crystallinity and less amorphous carbon than wall-deposited soot, and nanoparticles in the inner core have more graphitic layers in the encapsulating shells, more gaps between the carbon coating and the core, and exhibit a greater degree of facetting than particles harvested from the reactor walls. These differences are interpreted as manifestations of the high temperature post-formation environment of the inner core of the cathode deposit.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 359: Symposium G – Science and Technology of Fullerene Materials , 1994 , 41
Copyright
Copyright © Materials Research Society 1995

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References

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