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We have successfully fabricated straight carbon nanofibers containing coiled carbon nanofibers by ethanol catalytic combustion technique. In our experiment, copper plate was employed as substrate, transition metal salt solution as catalyst precursor, and ethanol as carbon source. The morphology and microstructure of the obtained carbon nanostructures have been investigated and their growth mechanism has been discussed.
The authors thank Prof. X. M. Meng of Technical Institute of Physics and Chemistry of CAS for the aid in SEM analysis, and Prof. X. D. Xu of Beijing University of Technology for the assistance in TEM analysis. One of authors (X. P. Zou) thanks the partial financial support from Founding Project for Academic Human Resources Development in Institutions of Higher Learning Under the Jurisdiction of Beijing, Founding Program of Science & Technology Activity for Chinese Homecoming Fellow Abroad, Program of Beijing Key Lab for Sensor (No. KM200710772023, No. KM2007100772024).