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Combined-Method Synthesis of CaTiO3 and SrTiO3 Perovskites with n-Hexane: Impact on Structure and Microstructure
Автор(ы)
Дата публикации
17 июля 2026 г.
Тип
journal article
Журнал
Том
24
Выпуск
2
Первая страница
223
Последняя страница
232
ISSN
1683-3902
Аннотация
This study reports the synthesis of CaTiO3 and SrTiO3 with a perovskite structure by a combined route involving preliminary wet mixing of CaCO3/SrCO3 carbonates and TiO2 in n-hexane, followed by a solid – state reaction during high-temperature calcination. The phase composition and crystal structure of the obtained materials were examined by X-ray diffraction with Rietveld refinement, while the microstructure and elemental distribution were studied using SEM\EDX, and local structure and surface groups were probed by ATR– FTIR spectroscopy. It is shown that the presence of the organic solvent and the applied thermal treatment lead to the formation of single-phase CaTiO3 and SrTiO3 with orthorhombic and cubic modifications, respectively, and with crystallographic parameters with reference PDF cards. The average crystallite size calculated using the Sherrer equation confirmed the nanocrystalline nature of the powders, whereas SEM/EDX analysis reveals a highly porous microstructure and a homogeneous elemental distribution without noticeable metallic impurities. It is established that A-site cation substitution Ca2+/Sr2+ in combination with n-hexane wet mixing induces systematic changes in lattice symmetry, IR band positions and agglomerate morphology, enabling targeted tuning of the texture and potential functional properties of perovskite titanates. The proposed combined approach is a technologically simple and scalable method for producing nanostructured oxide perovskites that are promising as supports and active phases in catalytic systems for combustion processes, plasma-chemical oxidation and functional ceramics.
Области науки (FoS)
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Название
W7169668435.pdf
Описание
Полный текст в открытом доступе, лицензия cc-by; источник: https://cpc-journal.kz/index.php/cpcj/article/download/895/827
Размер
1,19 MB
Формат
Adobe PDF
Контрольная сумма
(MD5):ff330b225421b5c839bd7221dd25ad49