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Synthesis and characterization of carbon filaments grown from Pd3P colloids

Published online by Cambridge University Press:  31 January 2011

F. Cesar ,
J-O. Bovin ,
L. R. Wallenberg ,
G. Karlsson ,
L. K. L. Falk  and
T. Oku
F. Cesar
Affiliation:
National Center for High-Resolution Electron Microscopy, Inorganic Chemistry 2, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, S-221 00, Lund, Sweden
J-O. Bovin
Affiliation:
National Center for High-Resolution Electron Microscopy, Inorganic Chemistry 2, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, S-221 00, Lund, Sweden
L. R. Wallenberg
Affiliation:
National Center for High-Resolution Electron Microscopy, Inorganic Chemistry 2, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, S-221 00, Lund, Sweden
G. Karlsson
Affiliation:
The Biomicroscopy Unit, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, S-221 00, Sweden
L. K. L. Falk
Affiliation:
Division for Microscopy and Microanalysis, Department of Experimental Physics, Chalmers University of Technology, S-412 96, Gothenburg, Lund, Sweden
T. Oku
Affiliation:
Institute of Scientific and Industrial Research, Osaka University, Mihogaoka 8–1, Ibaraki, Osaka 567–0047, Japan
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Abstract

Amorphous carbon filaments were synthesized by catalytic pyrolysis of propene over Pd3P colloids. The channel close to the center of the filaments usually contained particles, which were analyzed by analytical electron microscopy to be palladium. The palladium particles could be found anywhere along the filament. The carbon filaments were of two types and of different diameters, about 8–15 nm and about 40–80 nm. The thinner type of filament shows a channel diameter of about 5 nm. The type of filament produced depends on the reaction conditions. Increased reaction time results in a large number of filaments, whereas an increased propene gas flow results in more of the thicker type of filaments.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 15 , Issue 9 , September 2000 , pp. 1857 - 1859
Copyright
Copyright © Materials Research Society 2000

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References

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