Influence of thermal oxidation on as-synthesized detonation nanodiamond--颗粒学报PARTICUOLOGY

Xu, X., & Yu, Z. (2012). Influence of thermal oxidation on as-synthesized detonation nanodiamond. Particuology, 10(3), 339–344. https://doi.org/10.1016/j.partic.2011.03.015

Influence of thermal oxidation on as-synthesized detonation nanodiamond

Xiangyang Xu ^{a c *}, Zhiming Yu ^b

a School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
b School of Materials Science and Engineering, Central South University, Changsha 410083, China
c Changsha Research Institute of Mining and Metallurgy, Changsha 410012, China

10.1016/j.partic.2011.03.015

Volume 10, Issue 3, June 2012, Pages 339-344

Received 27 August 2010, Revised 7 March 2011, Accepted 23 March 2011, Available online 4 November 2011.

E-mail: xiangyang.xu@sohu.com

Highlights

Abstract

The thermal property of an as-synthesized black powder, a detonation nanodiamond (DND) product, was first analyzed, followed by thermal oxidation to modify its surface. During the thermal treatment, the non-diamond carbonaceous shell of the black powder was oxidized, with the likelihood of forming a C–O–C bonding between carbon atoms on the particle surface. This new structure may rupture with intensified oxidation through increasing the heating temperature and prolonging the process duration. As more oxygen-containing functional groups form on the particle surface, the particle surface becomes negatively charged, and the powder turns to be more hydrophilic.

Graphical abstract

Keywords

Thermal oxidation; Diamond; Nanoparticle; Surface property; Hydrophilicity

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