State of Iron in Nanoparticles Prepared by Impregnation of Silica Gel and Aluminum Oxide with FeSO4 Solutions
Научная публикация
| Общая информация |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Переводная
|
| Журнал |
Physics of the Solid State
ISSN: 1063-7834
, E-ISSN: 1090-6460
|
| Вых. Данные |
Год: 2010,
Том: 52,
Номер: 4,
Страницы: 826-837
Страниц
: 12
DOI:
10.1134/S1063783410040268
|
| Ключевые слова |
Quadrupole Splitting; Hexagonal Packing; Divalent Iron; Nonequivalent Position; Oxysulfate |
| Авторы |
Bukhtiyarova G.A.
1
,
Martyanov O.N.
1
,
Yakushkin S.S.
1
,
Kazakova (Shuvaeva) M.A.
1
,
Bayukov O.A.
2
|
| Организации |
| 1 |
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences
|
| 2 |
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences
|
|
Информация о финансировании (1)
The state of iron in nanoparticles prepared by impregnating silica gel and aluminum oxide with iron(II) sulfate solutions has been investigated using Mössbauer spectroscopy. It has been revealed that the state of iron depends on the nature of the support. Iron(III) hydroxysulfate and iron(III) oxysulfate nanoparticles are formed on the surface of silica gel, and iron oxide nanoparticles are formed on the surface of aluminum oxide. An increase in the concentration of iron ions or in the size of iron-containing particles leads to hydration of the nanoparticle surface. The calcination of the samples results in the formation of ɛ-Fe2O3 oxide in a strongly disordered or amorphous state in iron-containing particles on the surface of silica gel.