Facile solution combustion synthesis of BiFeO3 nanopowder with improved magnetic and photocatalytic characteristics
Lomanova N.A. Osipov A.V. Ugolkov V.L. Kenges K.M. Yastrebov S.G.
August 2025Elsevier B.V.
Inorganic Chemistry Communications
2025#178
In recent years, perovskite-like orthoferrites continue to attract much attention due to their promising practical applications as materials for magnetic memory and photocatalysis. In this study, we report of the facile solution combustion synthesis of single-phase nanopowder of bismuth orthoferrite, BiFeO3, resulting in the formation of a single-phase nanocrystals with an average size of 48 ± 2 nm at a minimum annealing temperature. The peculiarities of the material formation from the initial mixture with an excess of glycine by subsequent calcination of the combustion product in air, were characterized by XRD, Mössbauer spectroscopy and DSC/TG. Its microstructural characteristics, morphology, and structure were studied by electron microscopy (SEM and TEM), X-ray diffraction (XRD), BET, helium pycnometry, and Raman spectroscopy. The features of sintering, including the sintering temperature, were determined by dilatometry in air. The temperature dependences of thermal expansion, the linear thermal expansion coefficient and thermal conductivity of BiFeO3 are provided. The magnetic behavior of synthesized material was assessed using vibrating-sample magnetometry. It was showed the sample have magnetic ordering at room temperature and its magnetization is increased several times compared to BiFeO3 particles with similar sizes, but obtained by other synthesis routs. Specific features in the magnetization of nanocrystalline BiFeO3 with varying temperature were analyzed for the first time. The photocatalytic activity study showed 70% photodegradation of rhodamine B dye within 180 min of visible light irradiation using the obtained material.
Bismuth orthoferrite , Glycine-nitrate combustion , Magnetic properties , Photocatalytic properties , Thermal properties
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Ioffe Institute, 26 Polytekhnicheskaya Str., St. Petersburg, 194021, Russian Federation
Institute of Silicate Chemistry of Russian Academy of Sciences, Adm. Makarova emb. 2, St. Petersburg, 199034, Russian Federation
Center of Physical-Chemical Methods of Research and Analysis, Al-Farabi Kazakh National University, Almaty, Kazakhstan
LLP «EcoRadSM», Almaty, Kazakhstan
Ioffe Institute
Institute of Silicate Chemistry of Russian Academy of Sciences
Center of Physical-Chemical Methods of Research and Analysis
LLP «EcoRadSM»
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