Study of the structure of carbon matrices for radionuclide encapsulation by small-angle neutron scattering

The structure of carbon matrices prepared from diphtalocyanines using pyrolysis to encapsulate metal atoms (Y, Sm, U) inside small pores is studied by small-angle neutron scattering. It is shown that the structure of the porous matrix at a scale of 10 0 –10 2 nm is characterized by two levels — smal...

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Bibliographic Details
Published in:Surface investigation, x-ray, synchrotron and neutron techniques x-ray, synchrotron and neutron techniques, 2014-05, Vol.8 (3), p.411-417
Main Authors: Lebedev, V. M., Lebedev, V. T., Orlova, D. N., Tikhonov, V. I.
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Materials Science
Surfaces and Interfaces
Thin Films
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Summary:The structure of carbon matrices prepared from diphtalocyanines using pyrolysis to encapsulate metal atoms (Y, Sm, U) inside small pores is studied by small-angle neutron scattering. It is shown that the structure of the porous matrix at a scale of 10 0 –10 2 nm is characterized by two levels — small pores with the characteristic radii of 3–7 nm aggregated into entities with sizes of 40–100 nm and higher. The scattering data fit the values of the sample density and the total volume of pores in the matrices.
ISSN:1027-4510
1819-7094
DOI:10.1134/S1027451014030094