Size dependent surface reconstruction in detonation nanodiamonds.
Nanoscale Horiz
; 3(2): 213-217, 2018 Mar 01.
Article
em En
| MEDLINE
| ID: mdl-32254073
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.
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MEDLINE
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En
Ano de publicação:
2018
Tipo de documento:
Article