Answers are grounded in this paper and cite their sources.
The three-dimensional (3D) structure and chemical composition of bamboo-like carbon nanotubes including the catalyst particles that are used during their growth are studied by discrete electron tomography in combination with energy-filtered transmission electron microscopy. It is found that cavities are present in the catalyst particles. Furthermore, only a small percentage of the catalyst particles consist of pure Cu, since a large volume fraction of the particles is oxidized to Cu2O. These volume fractions are determined quantitatively from 3D reconstructions obtained by discrete tomography.
No takes yet. Share an insight, caveat, or question.
Bals et al. (2007) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: