Curved Surfaces in Disordered Carbons by High Energy X-ray Scattering

A. Buriana, A. Szczygielskaa, J. Kołoczeka, J.C. Doreb, V. Honkimakic and S. Duberd aA. Chełkowski Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland bPhysics Laboratory, University of Kent, Canterbury CT2 7NR, U.K. cESRF, BP 220, 38042 Grenoble, France dFaculty of Earth Sciences, Interdepartmental Laboratory of Structural Research, University of Silesia, Będzińska 60, 41-200 Sosnowiec, Poland

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Disordered carbons prepared by slow pyrolysis of saccharose and anthracene and subsequent heat treatment at 1000 °C and 2300 °C have been studied by high energy X-ray diffraction. Computer simulations of the powder diffraction patterns of fullerenes, nanotubes and carbon models have been compared with the experimental data after conversion to real space via the Fourier transform. The presence of fullerene- and nanotube-like fragments with non-six membered rings in the investigated samples has been deduced by detailed analysis of the radial distribution functions of the saccharose- and anthracene-based carbons and related to resistance to graphitization of the saccharose-based carbons and to stability of the growing crystallites in the case of the anthracene-based carbons. The obtained results are compared to high resolution electron microscopy and Raman studies.

DOI: 10.12693/APhysPolA.101.751 PACS numbers: 61.10.-i, 61.10.Eq, 61.46.+w