Open AccessАлгоритм предварительного анализа дифракционных спектров для нанокомпозитных материалов с примесью массивной фракции
Author(s) -
О. А. Алексеева,
А.А. Набережнов
Publication year - 2022
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/jtf.2022.01.51866.208-21
Subject(s) - diffraction , neutron diffraction , nanoporous , materials science , molecular sieve , porosity , scattering , bragg's law , component (thermodynamics) , x ray crystallography , optics , computational physics , analytical chemistry (journal) , physics , composite material , nanotechnology , chemistry , thermodynamics , chromatography , adsorption
This contribution is devoted to discussion of questions related to the influence of a possible contribution from a bulk material on the lineshape of elastic peaks observed in diffraction experiments at neutron and / or X-ray radiation scattering on nanoporous matrices containing substances embedded into their porous space (channels). The proposed algorithm permits to estimate the input of massive component into diffraction peaks using the analysis of the experimentally observed distortions of the lineshape of the Bragg peaks. This preliminary analysis greatly simplifies the profile analysis of nanocomposite diffraction patterns, especially for molecular sieves based on powders of SBA-15, MCM-41, MCM-48, etc. types.