Эта публикация цитируется в 3 статьях

CHEMISTRY AND MATERIAL SCIENCE

Synthesis of magnesium ferrite by combustion of glycine-nitrate gel: the influence of reagents on the gel-precursor and the microstructure of nanopowders

Maria N. Smirnova, Galina E. Nikiforova, Olga N. Kondrat'eva

Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia

Аннотация: In this study, the influence of initial reagents on the phase composition and morphology of magnesium ferrite obtained by combustion of glycine-nitrate gel was investigated. The local environment of iron ions in the gel-precursor was studied in detail using FT-IR, XANES- and EXAFS- spectroscopy. It has been established that in the gel-precursor obtained by dissolving metals (Mg, Fe) in dilute nitric acid, binuclear Fe(III) complexes are formed, while in a similar gel-precursor obtained from crystalline hydrates of nitrates of the corresponding metals, trinuclear Fe(III) complexes predominate. Combustion of a gel consisting of binuclear Fe(III) complexes leads to the formation of nanocrystalline magnesium ferrite powder, characterized by a unimodal particle size distribution.

Ключевые слова: gel combustion, glycine, spinel, nanopowders, MgFe$_2$O$_4$.

Поступила в редакцию: 28.02.2024
Исправленный вариант: 15.03.2024

Язык публикации: английский

DOI: 10.17586/2220-8054-2024-15-2-224-232