Journal article
Nanodiamond graphitization: a magnetic resonance study
Journal of physics. Condensed matter, v 25(24), pp 245303-245303
24 May 2013
PMID: 23709490
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We report on the first nuclear magnetic resonance (NMR) and electron paramagnetic resonance (EPR) study of the high-temperature nanodiamond-to-onion transformation. 1H, 13C NMR and EPR spectra of the initial nanodiamond samples and those annealed at 600, 700, 800 and 1800 ° C were measured. For the samples annealed at 600 to 800 ° C, our NMR data reveal the early stages of the surface modification, as well as a progressive increase in sp2 carbon content with increased annealing temperature. Such quantitative experimental data were recorded for the first time. These findings correlate with EPR data on the sensitivity of the dangling bond EPR line width to air content, progressing with rising annealing temperature, that evidences consequent graphitization of the external layers of the diamond core. The sample annealed at 1800 ° C shows complete conversion of nanodiamond particles into carbon onions.
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Details
- Title
- Nanodiamond graphitization: a magnetic resonance study
- Creators
- A M Panich - Department of Physics, Ben-Gurion University of the Negev , PO Box 653, Be'er Sheva 84105, IsraelA I Shames - Department of Physics, Ben-Gurion University of the Negev , PO Box 653, Be'er Sheva 84105, IsraelN A Sergeev - Institute of Physics, University of Szczecin , 70-451 Szczecin, PolandM Olszewski - Institute of Physics, University of Szczecin , 70-451 Szczecin, PolandJ K McDonough - Department of Materials Science and Engineering, Drexel University , 3141 Chestnut Street, Philadelphia, PA 19104, USAV N Mochalin - Department of Materials Science and Engineering, Drexel University , 3141 Chestnut Street, Philadelphia, PA 19104, USAY Gogotsi - Department of Materials Science and Engineering, Drexel University , 3141 Chestnut Street, Philadelphia, PA 19104, USA
- Publication Details
- Journal of physics. Condensed matter, v 25(24), pp 245303-245303
- Publisher
- IOP Publishing
- Number of pages
- 8
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000319673800008
- Scopus ID
- 2-s2.0-84878568166
- Other Identifier
- 991014877830004721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Physics, Condensed Matter