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Atomic hydrogen treatment of nanodiamond powder studied with photoemission spectroscopy

Lookup NU author(s): Mahboubeh Yeganeh, Dr Abel Brieva, Professor Lidija Siller, Dr Yuriy Butenko

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Abstract

The effect of atomic hydrogen treatment upon the surface of partially graphitized nanodiamonds has been studied by photoemission spectroscopy. The C1s core level peak and valence band spectra of a partially graphitized nanodiamond sample were compared with those following hydrogen treatment and following subsequent annealing. We have observed a difference in the binding energy of the sp(3) component of the C1s peak and in the valence band which we believe can be assigned to either upward or downward band bending due to surface graphitization and hydrogenation of nanodiamonds, respectively. The data confirms that the graphitic layers which initially cover the nanodiamond particles can be removed through exposure to atomic hydrogen. This method could enable the preparation of hydrogen terminated and separate nanodiamond particles.

Publication metadata

Author(s): Yeganeh M; Siller L; Butenko YV; Brieva AC; Dhanak VR; Coxon PR

Publication type: Article

Publication status: Published

Journal: Physical Review B: Condensed Matter and Materials Physics

Year: 2007

Volume: 75

Issue: 15

Print publication date: 15/04/2007

Online publication date: 05/04/2007

ISSN (print): 1098-0121

ISSN (electronic): 1550-235X

Publisher: American Physical Society

URL: http://dx.doi.org/10.1103/PhysRevB.75.155404

DOI: 10.1103/PhysRevB.75.155404

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