X-RAY STUDIES OF CARBON NANOMATERIAL SCN
AFTER LOCATION SIMPLES IN HYDROGEN PLASMA
V.V. Meleshko1, A.I. Prokhvatilov1, A.V. Dolbin1, M.A. Vinnikov, R.M. Basnukaeva1, M.V. Khlistyuk1, O.L. Rezinkin2

1 B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Nauky Ave., Kharkov 61103, Ukraine.
2 National Technical University "Kharkiv Polytechnic Institute", 2, Kyrpychova str., Kharkov, 61002, Ukraine
e-mail: meleshko@ilt.kharkov.ua

In last time was founded a new class of carbon nanostructures - synthetic nanoporous coals of SCN. In general, the structure of the SCN is alternating ordered and unordered regions from carbon rings - hexagons. They have high specific volume and surface sorption pores. In this work, the effect of hydrogen plasma on the structural state of a nanoporous sorbent was studied by X-ray diffractometry. Three types of samples were studied: 1 - granular SCN samples in the initial state in the form of balls, 2 - SCN samples modified in a "cold" hydrogen plasma, 3 - samples, obtained from a powder, which was made by mechanically grinding the balls of the SCN of the initial state.
It was concluded from X-ray studies that the starting samples contain crystalline and amorphous phases. And it was shown that the hydrogen plasma exerts a pronounced effect on both states. As compared with observed peaks of diffraction reflections from the initial state, it has an additional peak at the angles characteristic of the graphene oxide and single- and multi-walled nanotubes. In addition, the coherent scattering peaks shift toward larger angles and there was an increase and homogenization of the background of diffusion scattering. The obtained data indicate a decreasing in the interplanar distances and an increasing in the density of the crystalline phase, apparently as a result of the chemical interaction of the +H atoms with the carbon sorbent.
It has been established that mechanical dispersion of the SCN samples leads to the complete disappearance of crystalline phases and to the destruction of short-range order regions.

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