The Synthesis and Studies of Crystal/Local Structures and Morphology of Hydrated Molybdenum Oxides Научная публикация
Журнал |
Journal of Solid State Chemistry
ISSN: 0022-4596 , E-ISSN: 1095-726X |
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Вых. Данные | Год: 2021, Том: 301, Номер статьи : 122356, Страниц : 11 DOI: 10.1016/j.jssc.2021.122356 | ||||||||||||
Ключевые слова | Hydrated MoO3, X-ray diffraction, X-ray absorption spectroscopy, Scanning Electron Microscopy, Raman spectroscopy, IR spectroscopy | ||||||||||||
Авторы |
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Организации |
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Информация о финансировании (3)
1 | Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) | FSWU-2020-0035 |
2 | Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) | 0718-2020-0037 |
3 | Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) | 0239-2021-0002 |
Реферат:
The crystal/local structure and morphology of hydrated molybdenum oxides particles obtained by acidic precipitation of molybdates solutions were studied using X-ray diffraction, X-ray absorption spectroscopy, scanning electron microscopy, Raman and IR spectroscopy. The precipitation of ammonium heptamolybdate solutions
(pH = 1.00) at room temperature result in the formation of poorly crystallized hydrated molybdenum oxides. At the same time, acidification of the sodium molybdate solutions does not lead to the appearance of precipitates for several days. Heating to 90° C and aging the reaction suspension prepared from both ammonium heptamolybdate and sodium molybdate results in the formation of prismatic h-MoO3 particles with the hexagonal crystal structure. It was shown that distorted octahedra MoO6 are the basic structural units in the formed hydrated molybdenum oxides. Along with the presence of Mo=O and Mo-O bonds, the presence of water molecules, hydroxyl ions, and (or Na+) ions was detected in the structure of hydrated MoO3. The type of Mo salt and acid significantly affects the morphology of h-MoO3 particles. Large h-MoO3 particles are formed by aggregation of small ones and Ostwald ripening due to the ”dissolution - precipitation” process.
Библиографическая ссылка:
Popov V.V.
, Menushenkov A.P.
, Yastrebtsev A.A.
, Molokova A.Y.
, Pisarev A.A.
, Khramov E.V.
, Zubavichus Y.V.
, Shchetinin I.V.
, Ponkratov K.V.
, Tsarenko N.A.
, Ognevskaya N.V.
The Synthesis and Studies of Crystal/Local Structures and Morphology of Hydrated Molybdenum Oxides
Journal of Solid State Chemistry. 2021. V.301. 122356 :1-11. DOI: 10.1016/j.jssc.2021.122356 WOS Scopus РИНЦ CAPlus OpenAlex
The Synthesis and Studies of Crystal/Local Structures and Morphology of Hydrated Molybdenum Oxides
Journal of Solid State Chemistry. 2021. V.301. 122356 :1-11. DOI: 10.1016/j.jssc.2021.122356 WOS Scopus РИНЦ CAPlus OpenAlex
Даты:
Поступила в редакцию: | 15 февр. 2021 г. |
Принята к публикации: | 13 июн. 2021 г. |
Опубликована online: | 18 июн. 2021 г. |
Опубликована в печати: | 1 сент. 2021 г. |
Идентификаторы БД:
Web of science: | WOS:000684543700041 |
Scopus: | 2-s2.0-85108446654 |
РИНЦ: | 46906100 |
Chemical Abstracts: | 2021:1412807 |
OpenAlex: | W3176084994 |