Boron-triggering Mechanochemical Effect In Relation With Artificial Graphite And Carbon Nanotube

Yuan-Haun Lee; Kaun-Chang Pan; Shen-Jiang Jeng; Shun-Tai Chang

doi:10.6180/jase.2003.6.3.07

Boron-triggering Mechanochemical Effect In Relation With Artificial Graphite And Carbon Nanotube

Material Engineering

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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