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Hydrothermal Synthesis and Characterization of Nanocrystallineγ-Fe2O3Particles

✍ Scribed by Dairong Chen; Ruren Xu

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
374 KB
Volume
137
Category
Article
ISSN
0022-4596

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✦ Synopsis

The -Fe 2 O 3 particles with nanometer size have been hydrothermally synthesized using 2-methoxyethanol (MOE)-H 2 O mixed solvent and acetylacetone(Hacac) as additive from iron(II) 2-methoxyethoxides (Fe(MOEO) 2 ). The typical reaction conditions are as follows: reaction temperature 140°C reaction time 7-10 days Fe(MOEO) 2 content 0.28 mol dm 3 molar ratio of MOE/H 2 O 0.4 molar ratio of Hacac/Fe(MOEO) 2 1.2&2.0

The as-prepared powders are characterized by experimental techniques such as IR, XRD, TG-DTA, and TEM. The magnetic properties of the particles have been evaluated using a vibrating magnetometer. The nanocrystalline -Fe 2 O 3 particles appear at a lower agglomeration and phase transformation temperature than those prepared from other methods.

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