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HomeMaterials Science ForumMaterials Science Forum Vol. 1127Structure and Magnetic Properties of Fe3O4/C...

Structure and Magnetic Properties of Fe₃O₄/C Composites Synthesized from Wheat Straw

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Abstract:

The porous structure and magnetic properties of nanostructured Fe₃O₄/C composites based on wheat straw were investigated in this work. The synthesis was carried out by a one- and two-step method using FeCl₃ and ZnCl₂ as activating agents. X-ray diffraction methods have shown the presence of an additional phase of magnetite Fe₃O₄ in both synthesized composites, along with the amorphous carbon phase. Magnetic measurements have shown that the composite synthesized in one step has better magnetic properties, in particular, a higher specific saturation magnetisation. However, the samples of the composite synthesized in two steps are characterised by a higher content of micropores and mesopores, which causes an increase in the specific surface area to 884 m²/g compared to 405 m²/g for the samples synthesized in one step. Based on the dependence of the coercive force on the particle diameter in Fe₃O₄ dispersions, it was found that the average size of the magnetite particles is ~25 nm for both synthesized magnetoresponsive composites.

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Periodical:

Materials Science Forum (Volume 1127)

Pages:

83-92

DOI:

https://doi.org/10.4028/p-IvadF6

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Online since:

September 2024

Authors:

Ihor Bordun*, Myroslav Malovanyy, Nazar Nahurskyi, Anatoliy Borysiuk, Ewelina Szymczykiewicz

Keywords:

Coercive Force, Nanostructured Composite, Porous Structure, Specific Magnetisation, X-Ray Diffraction

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© 2024 Trans Tech Publications Ltd. All Rights Reserved

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