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2009•Journal of Beijing Union UniversityRequires access

Preparation and Characterization of Fe_3O_4 Nanopowder

Zhou Xi-fei

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Abstract

The Fe_3O_4 nanopowder was prepared by the chemical precipitation method.The ethyl alcohol/water(v/v,6∶1) was used as solvent.The action of alcohol,as the solvent and dispersant,in the solvent on the preparation of Fe_3O_4 nanopowder was investigated.The effects of alkali and ammonia as the precipitator,the mol ratio of Fe3+ and Fe2+,pH value,et al on the production were investigated.The structure,catalytic activity and heating effect of the powders were investigated by XRD,TEM,DTA and FTIR respectively.The results show that the cubic nanometer Fe_3O_4 powder of good dispersion could be obtained and the average diameter was 20 nm.

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What this paper is about

The Fe_3O_4 nanopowder was prepared by the chemical precipitation method.The ethyl alcohol/water(v/v,6∶1) was used as solvent.The action of alcohol,as the solvent and dispersant,in the solvent on the preparation of Fe_3O_4 nanopowder was investigated.The effects of alkali and ammonia as the precipitator,the mol ratio of Fe3+ and Fe2+,pH value,et al on the production were investigated.The structure,catalytic activity and heating effect of the powders were investigated by XRD,TEM,DTA and FTIR respectively.The results show that the cubic nanometer Fe_3O_4 powder of good dispersion could be obtained and the average diameter was 20 nm.

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Available abstract

The Fe_3O_4 nanopowder was prepared by the chemical precipitation method.The ethyl alcohol/water(v/v,6∶1) was used as solvent.The action of alcohol,as the solvent and dispersant,in the solvent on the preparation of Fe_3O_4 nanopowder was investigated.The effects of alkali and ammonia as the precipitator,the mol ratio of Fe3+ and Fe2+,pH value,et al on the production were investigated.The structure,catalytic activity and heating effect of the powders were investigated by XRD,TEM,DTA and FTIR respectively.The results show that the cubic nanometer Fe_3O_4 powder of good dispersion could be obtained and the average diameter was 20 nm.

Key concepts: Dispersant, Solvent, Fourier transform infrared spectroscopy, Materials science, Nanometre, Dispersion (optics), Nuclear chemistry, Precipitation

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