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Issue 2, 2018

Size dependent surface reconstruction in detonation nanodiamonds

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Abstract

Nanometer-sized diamond particles are used in bio-medical applications, where the nature of the nanodiamond surfaces is crucial to achieving correct functionalisation. Herein, using high-resolution transmission electron microscopy and electronic structure calculations, we study the surface reconstructions that occur in detonation-synthesized nanodiamonds. Our results show that particles smaller than 3 nm exhibit size- and shape-dependent surface reconstructions, and that the surfaces can exhibit a higher-than-expected fraction of sp2+x bonding. This indicates an aliphatic character for sub-3 nm nanodiamond particles. Such behaviour impacts the functionality of nanodiamonds, where both size and surface charge can drive performance. Our observations offer a potential strategy for better functionalization control via the size range of the particles.

Graphical abstract: Size dependent surface reconstruction in detonation nanodiamonds

Supplementary files

Article information


Submitted
16 Aug 2017
Accepted
15 Dec 2017
First published
15 Dec 2017

Nanoscale Horiz., 2018,3, 213-217
Article type
Communication

Size dependent surface reconstruction in detonation nanodiamonds

S. L. Y. Chang, C. Dwyer, E. Ōsawa and A. S. Barnard, Nanoscale Horiz., 2018, 3, 213 DOI: 10.1039/C7NH00125H

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