Pseudomorphism and Size Stabilization of Hematite Particles in the Organic Phase Synthesis
Научная публикация
| Общая информация |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Journal of Solid State Chemistry
ISSN: 0022-4596
, E-ISSN: 1095-726X
|
| Вых. Данные |
Год: 2020,
Том: 282,
Номер статьи
: 121130,
Страниц
: 6
DOI:
10.1016/j.jssc.2019.121130
|
| Ключевые слова |
Hematite; Pseudomorphism; Size stabilization |
| Авторы |
Sankova N.
1,2
,
Parkhomchuk E.
1,2
|
| Организации |
| 1 |
Novosibirsk State University, Pirogova Str. 2, Novosibirsk, 630090
|
| 2 |
Boreskov Institute of Catalysis SB RAS
|
|
Информация о финансировании (1)
|
1
|
Федеральное агентство научных организаций России
|
0303-2016-0010
|
In this paper, we suggest the synthetic routes to prepare octahedrally crystallized hematite particles. One of these routes allows stabilizing pseudomorphic nanoparticles. Calcination of iron (III) oleate at 300 °C in air gives triangular shaped magnetite particles. At higher temperatures (400–500 °C), the octahedrons, about 1 μm in size, with predominant hematite phase are obtained. Calcination of the same precursor in the presence of polymeric beads results in a decrease of particle size up to 20 nm while preserving the magnetic phase admixture. To achieve effective stabilization, swelling of polystyrene beads during the iron (III) oleate impregnation is required.