Yuan-Haun Lee 1, Kaun-Chang Pan1, Shen-Jiang Jeng1 and Shun-Tai Chang1
1Department of Materials Science and Engineering National Taiwan University Taipei, Taiwan 106, R.O.C.
Received:
May 21, 2003
Accepted:
June 20, 2003
Publication Date:
September 1, 2003
Download Citation:
||https://doi.org/10.6180/jase.2003.6.3.07
ABSTRACT
An artificial graphite named as Dissolution Precipitation Graphite (DPG) was produced by a metallurgical manufacturing process, in which small amount of boron was added. DPG has a high degree of graphitization (90％) and a natural dispersion of carbon nanotube on the surface. This effect is ascribed to a peeling-off of graphene and is named as boron-triggering mechanochemical effect. After sieving and washing with HCl, the image of carbon nanotube can be observed by a scanning electron microscope. Crystal structures and the degrees of graphitization of the DPG samples were characterized by XRD and refined by the Rietveld method. Raman spectra of C−C bonding shown that the peaks of 1331 cm-1 and 1580 cm-1 of DPG are sharper and weaker than the original carbon material. Asp2 /Asp3 ratio for the DPG-B2000 is the highest among the others.
Keywords:
Carbon Nanotube, Fullerene, Boron-triggering, Mechanochemical Effect, Scanning Electron Microscope, Rietveld Method, Raman Spectroscopy
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