Influence of the structure of iron carbonyl precursor on the properties of iron oxide nanoparticles obtained from it

Zefirov, V.V.; Sizov, V.E.; Maksimov, S.V.; Kharitonova, E.P.; Gallyamov, M.O.

Авторы: Zefirov Vadim V., Sizov Victor E., Maksimov Sergey V., Kharitonova Elena P., Gallyamov Marat O.
Журнал: Journal of Nanoparticle Research
Том: 24
Номер: 6
Год издания: 2022
Издательство: Springer Nature
Местоположение издательства: Switzerland
Первая страница: 111
Номер статьи: 111
DOI: 10.1007/s11051-022-05474-8
Аннотация: The creation of metal oxide aerogels is a demanded and developing area of science. Aerogel materials have a high specific surface area and can be used in a wide range of applications from catalysis to filtration. Iron oxide aerogels, which are used in power engineering, electronics, catalysis, and medical applications, are of particular interest. In this work, a recently proposed method for the rapid and efficient synthesis of aerogels of iron oxides by thermal decomposition of carbonyl precursors in supercritical carbon dioxide is investigated. The influence of the carbonyl precursor structure on the morphology of the obtained materials was revealed. It was shown that the formation of monolithic aerogels is directly related to the degree of precursor solubility in supercritical carbon dioxide. Besides, the solubility itself depends on the stoichiometry of the carbonyl groups of the precursor. Also, the effect of the precursor structure on the resulting aerogel grain size was shown: when using Fe2(CO)9 precursor, an average grain size was 15.9 nm, while when using Fe3(CO)12 precursor, it was 5.6 nm. The main aim of this work is to demonstrate that the proposed method of synthesis using various iron carbonyl precursors allows for efficient control over the parameters of the obtained materials.
Добавил в систему: Галлямов Марат Олегович

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