Issue 10, 2002
From the journal:

Physical Chemistry Chemical Physics

Transformation of diamond nanoparticles into carbon onions under electron irradiation

V. V. Roddatis,†*a   V. L. Kuznetsov,b   Yu. V. Butenko,b   D. S. Sua  and  R. Schlögla  

* Corresponding authors

a Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, Berlin, Germany
E-mail: roddatis@FHI-Berlin.mpg.de

b Boreskov Institute of Catalysis SB RAN, Lavrentieva 5, Novosibirsk 630090, Russia

Abstract

The irradiation-induced transformation of diamond nanoparticles (DNP) to spherical onions and onion-like carbon was studied in situ by high-resolution transmission electron microscopy (HRTEM) and electron energy loss spectroscopy (EELS). The process was observed in a transmission electron microscope operated at 200 kV without additional specimen heating. Estimated current density was in the range 20–40 A cm−2. The onion-like particles formed from the diamonds were found to be quite stable to further electron irradiation. The changes in chemical bonding were also confirmed by EELS, revealing an increasing role of bonds with sp2 hybridization in the irradiated material. The mechanism of structural transformation is discussed.

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Article information

DOI
https://doi.org/10.1039/B110487J
Article type
Paper
Submitted
15 Nov 2001
Accepted
06 Feb 2002
First published
09 Apr 2002

Phys. Chem. Chem. Phys., 2002,4, 1964-1967

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Transformation of diamond nanoparticles into carbon onions under electron irradiation

V. V. Roddatis, V. L. Kuznetsov, Yu. V. Butenko, D. S. Su and R. Schlögl, Phys. Chem. Chem. Phys., 2002, 4, 1964 DOI: 10.1039/B110487J

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