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Journal of Nanomaterials
Volume 2013 (2013), Article ID 201845, 4 pages
http://dx.doi.org/10.1155/2013/201845
Research Article

A Novel Technique for the Synthesis of Nanodiamond Powder

1Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China
2Geodynamics Research Center, Ehime University, Matsuyama 790-8577, Japan

Received 15 March 2013; Accepted 8 May 2013

Academic Editor: Ping Xiao

Copyright © 2013 Leiming Fang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We developed a novel technique to synthesize nanodiamond powder through the decomposition of graphitic C3N4 under high pressure and high temperature. The nanodiamond obtained by the present method is in an extremely pure form with no sp2 carbon contaminations. Individual nanodiamond grains are very uniform in size and virtually monodispersed single crystals. The grain size can be controlled from less than 1 nm to several hundred nanometers by adjusting the heating temperature (and also potentially by controlling pressure) used for the synthesis. The present product requires neither post-surface treatment to remove outer shell made of sp2 carbons nor deglomeration and size classification unlike the case for nanodiamond obtained by the conventional TNT detonation method.