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Influence of thermal oxidation on as-synthesized detonation nanodiamond

Authors
Journal
Particuology
1674-2001
Publisher
Elsevier
Volume
10
Issue
3
Identifiers
DOI: 10.1016/j.partic.2011.03.015
Keywords
  • Thermal Oxidation
  • Diamond
  • Nanoparticle
  • Surface Property
  • Hydrophilicity
Disciplines
  • Mathematics

Abstract

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.

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