Synthesis of Vanadia-Mayenite Nanocomposites and Characterization of Their Structure, Morphology and Surface Sites Full article
| Journal |
Journal of Composites Science
, E-ISSN: 2504-477X |
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| Output data | Year: 2022, Volume: 6, Number: 9, Article number : 254, Pages count : 13 DOI: 10.3390/jcs6090254 | ||
| Tags | mayenite; vanadia; nanocomposites; surface sites; textural and structural properties; morphology | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0010 |
Abstract:
Calcium aluminates (CA) with a mayenite structure have attracted a growing interest during the last decades. The present paper reports the preparation of vanadia-mayenite composites performed via an impregnation of pure CA with ammonium vanadate solution. The properties of the prepared materials were explored by a low-temperature nitrogen adsorption/desorption technique, X-ray diffraction analysis, transmission electron microscopy, and spin probe method. As revealed, the addition of vanadium significantly affects the textural properties and the porous structure of mayenite. The blockage of micropores by vanadium species is supposed. The spin probe electron paramagnetic resonance technique based on the adsorption of 1,3,5-trinitrobenzene, phenothiazine, and diphenylamine has been applied to study the active sites on the surface of the composite samples. The results demonstrated an increase in the concentration of weak electron-acceptor sites when the vanadium loading was 10 wt%. X-ray diffraction analysis and transmission electron microscopy studies showed that the composites consist of few phases including mayenite, CaO, and calcium vanadates.
Cite:
Shuvarakova E.I.
, Ilyina E.V.
, Cherepanova S.V.
, Gerasimov E.Y.
, Bedilo A.F.
, Vedyagin A.A.
Synthesis of Vanadia-Mayenite Nanocomposites and Characterization of Their Structure, Morphology and Surface Sites
Journal of Composites Science. 2022. V.6. N9. 254 :1-13. DOI: 10.3390/jcs6090254 WOS Scopus РИНЦ AN OpenAlex
Synthesis of Vanadia-Mayenite Nanocomposites and Characterization of Their Structure, Morphology and Surface Sites
Journal of Composites Science. 2022. V.6. N9. 254 :1-13. DOI: 10.3390/jcs6090254 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Aug 15, 2022 |
| Accepted: | Sep 2, 2022 |
| Published print: | Sep 5, 2022 |
| Published online: | Sep 5, 2022 |
Identifiers:
| Web of science: | WOS:000856395400001 |
| Scopus: | 2-s2.0-85138708935 |
| Elibrary: | 50398743 |
| Chemical Abstracts: | 2022:2535220 |
| OpenAlex: | W4295064743 |