Particulate morphology of nanostructured materials
The aim of this study was to develop a technique to analyze the crystalline and particulate morphology of highly disperse complex metal and metalloid oxides, which include both crystalline and amorphous phases, using X-ray diffraction (XRD) data to compute crystallite size distributions (CSD) compa...
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Chuiko Institute of Surface Chemistry of NAS of Ukraine
2020-09-01
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| Series: | Хімія, фізика та технологія поверхні |
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| Online Access: | https://cpts.com.ua/index.php/cpts/article/view/554 |
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| author | V. M. Gun'ko O. I. Oranska V. V. Paientko I. Ya. Sulym |
| author_facet | V. M. Gun'ko O. I. Oranska V. V. Paientko I. Ya. Sulym |
| author_sort | V. M. Gun'ko |
| collection | DOAJ |
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The aim of this study was to develop a technique to analyze the crystalline and particulate morphology of highly disperse complex metal and metalloid oxides, which include both crystalline and amorphous phases, using X-ray diffraction (XRD) data to compute crystallite size distributions (CSD) compared to the particles size distribution functions estimated from high-resolution transmission electron microscopy (TEM) images treated with specific software. Two versions of the XRD treatment methods were used: (i) full profile analysis (FPA) of whole XRD patterns with a self-consistent regularization (SCR) procedure using models for spherical and lamellar crystallites that allows us to estimate relative contributions of crystallites of different shapes; and (ii) analysis of main pure XRD lines with consideration of corrections on an instrumental line profile and background using a regularization procedure with models of spherical or lamellar crystallites. The XRD and TEM based approaches were tested to analyze the crystalline and particulate morphology of various disperse materials: complex (binary and ternary) fumed oxides with silica/alumina, silica/titania, and alumina/silica/titania including crystalline alumina and titania and amorphous silica; nanocomposites CeO2–ZrO2/SiO2 (10 : 10 : 80 wt.%) and TiO2–ZrO2/SiO2 (10 : 10 : 80 wt.%) including crystalline and amorphous phases and synthesized using a liquid-phase method and fumed silica A–300 as a substrate; and natural clays of complex composition including several crystalline phases. Obtained results show that the developed approaches to analyze the XRD patterns could be effectively used to compute the CSD in parallel with TEM image treatments, using specific software, for a deeper insight into crystalline and particulate morphology of various disperse materials.
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| format | Article |
| id | doaj-art-d3e046b6e2ee4cac8c1edfe2026d521d |
| institution | Matheson Library |
| issn | 2079-1704 2518-1238 |
| language | English |
| publishDate | 2020-09-01 |
| publisher | Chuiko Institute of Surface Chemistry of NAS of Ukraine |
| record_format | Article |
| series | Хімія, фізика та технологія поверхні |
| spelling | doaj-art-d3e046b6e2ee4cac8c1edfe2026d521d2025-07-22T18:31:14ZengChuiko Institute of Surface Chemistry of NAS of UkraineХімія, фізика та технологія поверхні2079-17042518-12382020-09-0111310.15407/hftp11.03.368Particulate morphology of nanostructured materialsV. M. Gun'ko0O. I. Oranska1V. V. Paientko2I. Ya. Sulym3Chuiko Institute of Surface Chemistry of National Academy of Sciences of UkraineChuiko Institute of Surface Chemistry of National Academy of Sciences of UkraineChuiko Institute of Surface Chemistry of National Academy of Sciences of UkraineChuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine The aim of this study was to develop a technique to analyze the crystalline and particulate morphology of highly disperse complex metal and metalloid oxides, which include both crystalline and amorphous phases, using X-ray diffraction (XRD) data to compute crystallite size distributions (CSD) compared to the particles size distribution functions estimated from high-resolution transmission electron microscopy (TEM) images treated with specific software. Two versions of the XRD treatment methods were used: (i) full profile analysis (FPA) of whole XRD patterns with a self-consistent regularization (SCR) procedure using models for spherical and lamellar crystallites that allows us to estimate relative contributions of crystallites of different shapes; and (ii) analysis of main pure XRD lines with consideration of corrections on an instrumental line profile and background using a regularization procedure with models of spherical or lamellar crystallites. The XRD and TEM based approaches were tested to analyze the crystalline and particulate morphology of various disperse materials: complex (binary and ternary) fumed oxides with silica/alumina, silica/titania, and alumina/silica/titania including crystalline alumina and titania and amorphous silica; nanocomposites CeO2–ZrO2/SiO2 (10 : 10 : 80 wt.%) and TiO2–ZrO2/SiO2 (10 : 10 : 80 wt.%) including crystalline and amorphous phases and synthesized using a liquid-phase method and fumed silica A–300 as a substrate; and natural clays of complex composition including several crystalline phases. Obtained results show that the developed approaches to analyze the XRD patterns could be effectively used to compute the CSD in parallel with TEM image treatments, using specific software, for a deeper insight into crystalline and particulate morphology of various disperse materials. https://cpts.com.ua/index.php/cpts/article/view/554complex fumed oxidesdeposited oxidesclaysparticulate morphologycrystallite size distribution |
| spellingShingle | V. M. Gun'ko O. I. Oranska V. V. Paientko I. Ya. Sulym Particulate morphology of nanostructured materials Хімія, фізика та технологія поверхні complex fumed oxides deposited oxides clays particulate morphology crystallite size distribution |
| title | Particulate morphology of nanostructured materials |
| title_full | Particulate morphology of nanostructured materials |
| title_fullStr | Particulate morphology of nanostructured materials |
| title_full_unstemmed | Particulate morphology of nanostructured materials |
| title_short | Particulate morphology of nanostructured materials |
| title_sort | particulate morphology of nanostructured materials |
| topic | complex fumed oxides deposited oxides clays particulate morphology crystallite size distribution |
| url | https://cpts.com.ua/index.php/cpts/article/view/554 |
| work_keys_str_mv | AT vmgunko particulatemorphologyofnanostructuredmaterials AT oioranska particulatemorphologyofnanostructuredmaterials AT vvpaientko particulatemorphologyofnanostructuredmaterials AT iyasulym particulatemorphologyofnanostructuredmaterials |