The Microstructure and Growth Behavior of Bi2Fe4O9 Superfine Particles Synthesized by Hydrothermal Method

Hai Peng Song; Qi Sun; Yuan Yu Wang

doi:10.4028/www.scientific.net/SSP.281.78

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HomeSolid State PhenomenaSolid State Phenomena Vol. 281The Microstructure and Growth Behavior of Bi2Fe4O9...

The Microstructure and Growth Behavior of Bi₂Fe₄O₉ Superfine Particles Synthesized by Hydrothermal Method

Abstract:

In this work, Bi₂Fe₄O₉ superfine particles were prepared by hydrothermal method and effects of hydrothermal conditions on the microstructure of Bi₂Fe₄O₉, especially the concentration of OH^- ([OH^-]) in initial solutions, were investigated. The results showed that [OH^-] had obvious influences on the growth of Bi₂Fe₄O₉ under the same hydrothermal temperature and hydrothermal time. Phase structure of Bi₂Fe₄O₉ unchanged with the increase of [OH^-] and maintained orthorhombic structure. Besides, the microstructure of Bi₂Fe₄O₉ was carefully studied through transmission electron microscopy (TEM). The results suggested that the mechanism of Bi₂Fe₄O₉growth was Ostwald ripening. In conclusion, Bi₂Fe₄O₉ superfine particles with good morphology and microstructure can be successfully synthesized when the concentration of OH^- is 2 mol/L and hydrothermal conditions are 240 °C for 6h.Keywords: Bi₂Fe₄O₉, hydrothermal method, phase structure, growth mechanism Topic code numbers: C2

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Solid State Phenomena (Volume 281)

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78-83

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https://doi.org/10.4028/www.scientific.net/SSP.281.78

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August 2018

Authors:

Hai Peng Song, Qi Sun, Yuan Yu Wang*

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Bi₂Fe₄O₉, Growth Mechanism, Hydrothermal Method, Phase Structure

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