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Issue 21, 2012
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Oxygen hole doping of nanodiamond

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Abstract

Surface-graphitized nanodiamonds (NDs) are promising hybrid nanomaterials which appear to combine core properties of diamond with surface properties of graphene-based materials. Here we demonstrate that NDs covered by graphene islands, so-called Fullerene-Like Reconstructions (FLRs), are sensitive to hole doping by molecular oxygen in water. NDs covered by FLRs (NDs-FLRs) are prepared by annealing under vacuum of detonation NDs at 750 °C. We propose that oxygen hole doping is promoted on FLRs due to a unique electronic interaction between the diamond core and the outer graphene layer. As a consequence, NDs-FLRs exhibit positive zeta potential in water, unlike NDs surrounded by several graphitic layers. Surface hole-doped NDs may be promising nanomaterials for new electronic and biomedical applications.

Graphical abstract: Oxygen hole doping of nanodiamond

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Article information


Submitted
28 Jun 2012
Accepted
28 Aug 2012
First published
31 Aug 2012

Nanoscale, 2012,4, 6792-6799
Article type
Paper

Oxygen hole doping of nanodiamond

T. Petit, J. Arnault, H. A. Girard, M. Sennour, T. Kang, C. Cheng and P. Bergonzo, Nanoscale, 2012, 4, 6792
DOI: 10.1039/C2NR31655B

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