Synthesis and Characterization of Polyhedral Graphite Particles
Wen Qian, Qianwang Chen*, Fangyu Cao, Changle Chen
Identifiers and Pagination:Year: 2008
First Page: 19
Last Page: 22
Publisher Id: TOMSJ-2-19
Article History:Received Date: 8/3/2008
Revision Received Date: 18/4/2008
Acceptance Date: 22/4/2008
Electronic publication date: 7/5/2008
Collection year: 2008
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Hollow polyhedral graphite particles with 200∼400 nm in diameter have been synthesized by heating oxalic acid, ferrocene and metallic magnesium at 580 °C, typically forming diamond-like octahedral structure. Combined with SEM, TEM, SAED patterns, and Raman spectroscopy, it was shown that the surface of graphite polyhedrons is composed of approximately 30-40 graphene shells; the four- or six- fold symmetric diffraction spots disclosed the nature of octahedral graphite particles; the edge of the graphite polyhedrons exists sp3-hybridized bonding, which would act as dangling bonds and localized defects in the polyhedron.